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한국전기전자재료학회> 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)> 페로브스카이트 태양전지에서의 저온 용액 공정의 BCP 버퍼층 효과

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페로브스카이트 태양전지에서의 저온 용액 공정의 BCP 버퍼층 효과

Impact of Solution-Processed BCP Buffer Layer on Efficient Perovskite Solar Cells

정민수 ( Minsu Jung ) , 최인우 ( In Woo Choi ) , 김동석 ( Dong Suk Kim )
  • : 한국전기전자재료학회
  • : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권1호
  • : 연속간행물
  • : 2021년 01월
  • : 73-77(5pages)
전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)

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1. 서 론
2. 실험 방법
3. 결과 및 고찰
4. 결 론
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Inorganic-organic hybrid perovskite solar cells have demonstrated considerable improvements, reaching 25.5% of certified power conversion efficiency in 2020 from 3.8% in 2009. In normal structured perovskite solar cells, TiO2 electrontransporting materials require heat treatment process at a high temperature over 450℃ to induce crystallinity. Inverted perovskite solar cells have also been studied to exclude the additional thermal process by using [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as a non-oxide electron-transporting layer. However, the drawback of the PCBM layer is a charge accumulation at the interface between PCBM and a metal electrode. The impact of bathocuproin (BCP) buffer layer on photovoltaic performance has been investigated herein to solve the problem of PCBM. 2-mM BCP-modified perovskite solar cells were observed to exhibit a maximum efficiency of 12.03% compared with BCP-free counterparts (5.82%) due to the suppression of the charge accumulation at the PCBM-Au interface and the resulting reduction of the charge recombination between perovskite and the PCBM layer.

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  • : 공학분야  > 전기공학
  • : KCI등재
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  • : 격월
  • : 1226-7945
  • : 2288-3258
  • : 학술지
  • : 연속간행물
  • : 1988-2021
  • : 4571


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34권5호(2021년 09월) 수록논문
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1국문논문지 개편과 관련하여

저자 : 조욱 ( Wook Jo )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 5호 발행 연도 : 2021 페이지 : pp. 269-270 (2 pages)

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2자기-기계-전기 변환소자를 이용한 에너지 하베스팅 기술

저자 : 황건태 ( Geon-tae Hwang ) , 류정호 ( Jungho Ryu ) , 윤운하 ( Woon-ha Yoon )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 5호 발행 연도 : 2021 페이지 : pp. 271-282 (12 pages)

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The internet of things (IoT) technology is a key component for the advent of 4th industrial revolution, which is the network of home appliances, infrastructures, and vehicles to remotely investigate these systems. For the operation of compact IoT devices, batteries are widely used as electric power, and the limited lifetime of batteries inevitably leads to periodic replacement. Magneto-mechano-electric (MME) generators may be alternatives to batteries inside the IoT devices by converting stray magnetic field into electric energy, since we are always surrounded by ambient alternating current (AC) magnetic fields induced from electric power transmission lines everywhere. This article reviews the recent domestic research progress in high-performance MME generators and their application field for IoT and electronic devices.

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3할라이드 페로브스카이트 단결정

저자 : 최진산 ( Jin San Choi ) , 조재훈 ( Jae Hun Jo ) , 우도현 ( Do Hyun Woo ) , 황영훈 ( Young-hun Hwang ) , 김일원 ( Ill Won Kim ) , 김태헌 ( Tae Heon Kim ) , 안창원 ( Chang Won Ahn )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 5호 발행 연도 : 2021 페이지 : pp. 283-295 (13 pages)

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For the last decades, a research hotspot for the halide perovskites (HPs) is now showing great progress in terms of improving efficiency for numerous photovoltaic devices (PVDs). However, it still faces challenges in the case of long-term stability in the air atmosphere. Defect-free high-quality HP single crystals show their promising properties for the remarkable development of highly efficient and stable PVDs. Here, we summarize the growth processing routes for the stable HP single crystals as well as briefly discuss the pros and cons of those well-established synthesis routes. Furthermore, we briefly include the comparison note between the HP single crystals and polycrystalline perovskite films regarding their device applications. Based on the future progress, the review concludes subjective perspectives and current challenges for the development of HPs high-quality PVDs.

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4FinFET 및 GAAFET의 게이트 접촉면적에 의한 열저항 특성과 Fin-Layout 구조 최적화

저자 : 조재웅 ( Jaewoong Cho ) , 김태용 ( Taeyong Kim ) , 최지원 ( Jiwon Choi ) , 최자양 ( Ziyang Cui ) , 신동욱 ( Dongxu Xin ) , 이준신 ( Junsin Yi )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 5호 발행 연도 : 2021 페이지 : pp. 296-300 (5 pages)

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The performance of devices has been improved with fine processes from planar to three-dimensional transistors (e.g., FinFET, NWFET, and MBCFET). There are some problems such as a short channel effect or a self-heating effect occur due to the reduction of the gate-channel length by miniaturization. To solve these problems, we compare and analyze the electrical and thermal characteristics of FinFET and GAAFET devices that are currently used and expected to be further developed in the future. In addition, the optimal structure according to the Fin shape was investigated. GAAFET is a suitable device for use in a smaller scale process than the currently used, because it shows superior electrical and thermal resistance characteristics compared to FinFET. Since there are pros and cons in process difficulty and device characteristics depending on the channel formation structure of GAAFET, we expect a mass-production of fine processes over 5 nm through structural optimization is feasible.

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5압전재료의 기초 물성 측정

저자 : 강우석 ( Woo-seok Kang ) , 이건주 ( Geon-ju Lee ) , 조욱 ( Wook Jo )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 5호 발행 연도 : 2021 페이지 : pp. 301-313 (13 pages)

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본 논문은 대학 연구실과 산업현장에서 강유전 압전 분야 연구를 갓 시작한 이들이 압전 소재의 특성에 대한 기초적, 이론적 개념에 대해서는 각종 교과서와 논문을 통해 쉽게 접할 수 있는 반면, 그 특성들이 실제로 어떻게 측정되고 평가되는 지에 대한 정보를 얻기가 힘들다는 점에 착안하여 압전 분야 입문자가 관련 측정 기술을 보다 쉽게 이해하고 접근할 수 있도록 돕는 것을 목적으로 한다. 기초 유전 물성인 임피던스에 기반한 유전상수와 유전손실 측정법을 시작으로 압전상수, 전기기계결합계수, 품질계수 및 측정 방법에 대해 논의하고, 강유전성을 대표하는 전계에 따른 분극 변화 측정법에 대해 기술하였다. 본 논문에서는 이미 표준화되어 있는 측정법들을 소개하고 있지만, 이를 숙지하고 응용한다면 보다 도전적이고 창의적인 측정법을 도출할 수 있을 것으로 기대한다.


Theoretical background for the meaning of various piezoelectric properties can be easily found in a number of textbooks and academic papers. In contrast, how they are actually measured and characterized are rarely described, though this information would be the most important especially to the researchers who just started working on the field. It follows that this report was intended to provide a practical guidance for measuring basic but essential properties of ferroelectric-based piezoelectric materials. The discussion begins with how to measurement dielectric properties such as dielectric permittivity and loss (dissipation factor), followed by piezoelectric properties such as piezoelectric constants, electromechanical coupling factor, and quality factor as well as ferroelectric features, i.e., electric field dependent polarization hysteresis. Though our discussion here is limited to the techniques that are already well-standardized, it is expected to make a seed to be developed into more challenging and creative ones.

KCI등재

6에어로졸 증착한 세라믹/금속 복합막의 금속 함량에 따른 습도 감지 특성 연구

저자 : 김익수 ( Ik-soo Kim ) , 구상모 ( Sang-mo Koo ) , 박철환 ( Chulhwan Park ) , 신원호 ( Weon Ho Shin ) , 이동원 ( Dong-won Lee ) , 오종민 ( Jong-min Oh )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 5호 발행 연도 : 2021 페이지 : pp. 314-320 (7 pages)

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Controlling ambient humid condition through high performance humidity sensors has become important for various fields, including industrial process, food storage, and the preservation of historic remains. Although aerosol deposited humidity sensors using ceramic BaTiO3 (BT) material have been widely studied because of their longtime stability, there remain critical disadvantages, such as low sensitivity, low linearity, and slow response/recovery time in case of the sensors fabricated at room temperature. To achieve superior humidity sensing properties even at room temperature condition, BT-Cu composite films utilizing aerosol deposition (AD) process have been proposed based on the percolation theory. The BT-Cu composite films showed gradually improved sensing properties until the Cu concentration reached 15 wt% in the composite film. However, the excessive Cu (above 30 wt%) containing BT-Cu composite films showed a rapid decrease of the sensing properties. The results of observed surface morphology of the AD fabricated composite films, to figure out the metal filler effect, showed correlation between surface topography as well as size and the amount of open pores according to the metal filler content. Overall, it is very important not only dielectric constant of the humidity sensing films but also microstructures, because they affect either the variation range of capacitance by ambient humidity or adsorption/desorption of ambient humidity onto/from the humidity sensing films.

KCI등재

7브러쉬 코팅 공정을 이용한 용액 기반 BiAlO 박막의 제작과 액정 소자에의 응용

저자 : 이주환 ( Ju Hwan Lee ) , 김대현 ( Dai-hyun Kim )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 5호 발행 연도 : 2021 페이지 : pp. 321-326 (6 pages)

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We fabricated BiAlO thin film by a solution process with a brush coating to be used as liquid crystal (LC) alignment layer. Solution-processed BiAlO was coated on the glass substrate by brush process. Prepared thin films were annealed at different temperatures of 80℃, 180℃, and 280℃. To verify whether the BiAlO film was formed properly, X-ray photoelectron spectroscopy analysis was performed on Bi and Al. Using a crystal rotation method by polarized optical microscopy, LC alignment state was evaluated. At the annealing temperature of 280℃, the uniform homogenous LC alignment was achieved. To reveal the mechanism of LC alignment by brush coating, field emission scanning electron microscope was used. Through this analysis, spin-coated and brush coated film surface were compared. It was revealed that physical anisotropy was induced by brush coating at a high annealing temperature. Particles were aligned in one direction along which brush coating was made, resulting in a physical anisotropy that affects a uniform LC alignment. Therefore, it was confirmed that brush coating combined with BiAlO thin film annealed at high temperature has a significant potential for LC alignment.

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8리튬이온 배터리의 분리막 손상 요인별 방전펄스의 검출과 분석

저자 : 임승현 ( Seung-hyun Lim ) , 이경렬 ( Gyeong-yeol Lee ) , 김남훈 ( Nam-hoon Kim ) , 김동언 ( Dong-eon Kim ) , 길경석 ( Gyung-suk Kil )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 5호 발행 연도 : 2021 페이지 : pp. 327-332 (6 pages)

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Lithium-ion batteries (LIBs) have become a main energy storage device in various applications, such as portable appliances, renewable energy facilities, and electric vehicles. However, the poor thermal stability of LIBs may cause explosion or fire. The thermal runaway is the result of a failure of the separator inside LIB. Damages like tearing, piercing, and collapsing of the separator were simulated in a mechanical, an electrical, and a thermal way, and small discharge pulses of a few mV were detected at the time of separator damages. From the experimental results, this paper provided a method that can identify the separator failure before thermal runaway in the aspect of a potential explosion and fire prevention measures.

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9벌크형 고온 초전도 합성

저자 : 이상헌 ( Sang Heon Lee )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 5호 발행 연도 : 2021 페이지 : pp. 333-336 (4 pages)

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Oxide YBCO bulk superconductors are manufactured using the melt process. Because seed crystal growth method utilizes a slow-spreading layer-by-layer reaction, a long-term heat treatment is required to manufacture a single-crystal specimen of several cm. In this study, the melt process method was applied to compensate for the shortcomings of the seed crystal growth method. The thickness of the upper and lower pellets of the YBCO bulk was molded to 40 mm, and YBCO superconductor was produced by heat treatment. The measurement results of capture magnetism was in line with the literature. This results in a relationship that the higher the growth of Y211 particle in the YBCO, the higher the superconducting properties. We analyzed the YBCO superconductor, focusing on the Y2BaCuO5 particle distribution.

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10Phase Evolution, Thermal Expansion, and Microwave Dielectric Properties of Cordierite-Al2O3 Composite

저자 : Shin Kim , Eun-doe Song , Hae-jin Hwang , Joo-sung Lee , Sang-ok Yoon

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 5호 발행 연도 : 2021 페이지 : pp. 337-341 (5 pages)

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Phase evolution, thermal and microwave dielectric properties of cordierite-Al2O3 composite were investigated. As the content of Al2O3 increased, mullite, sapphirine, and spinel were formed as secondary phases, implying that cordierite may be decomposed by the reaction with Al2O3. All sintered specimens exhibited dense microstructures. The densification occurred through liquid phase sintering. As the content of Al2O3 increased, the thermal expansion coefficient and the dielectric constant increased, whereas the quality factor decreased. The thermal expansion coefficient, the dielectric constant, and the quality factor of the 90 wt% cordierite 10 wt% Al2O3 composite sintered at 1,425℃ were 2.9×10-6 K-1, 5.1, and 34,844 GHz, respectively.

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1Bi0.5Na0.5TiO3-BiFeO3-SrTiO3 삼성분계 무연 압전 세라믹스의 강유전체-완화형 강유전체 상전이 거동

저자 : 이상섭 ( Sang Sub Lee ) , 이창헌 ( Chang-heon Lee ) , 즈엉짱안 ( Trang An Duong ) , 웬호앙티엔코이 ( Hoang Thien Khoi Nguyen ) , 한형수 ( Hyoung-su Han ) , 이재신 ( Jae-shin Lee )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 1호 발행 연도 : 2021 페이지 : pp. 1-7 (7 pages)

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This study investigated the structural, dielectric, ferroelectric, and strain properties of (0.98-x)Bi1/2Na1/2TiO3- 0.02BiFeO3-xSrTiO3 (BNT-BF-100xST, x=0.20, 0.22, 0.24, 0.26, and 0.28). All samples were successfully synthesized using the conventional solid-state reaction method and sintered at 1,175℃ for 2 h. The average grain size of the BNT-BF-100x ceramics decreased with increasing ST content. Furthermore, we observed that the ferroelectric- relaxor transition temperature (TF-R) decreased with increasing ST content, which eventually vanished in the BNT-BF-24ST ceramics. The results indicated that a ferroelectric to relaxor phase transition could be induced by ST modification. Consequently, a large electromechanical strain of 633 pm/V at 4 kV/mm was observed for the BNT-BF-26ST ceramics. These results imply that our materials have the competitive advantage of larger strain under lower operating field conditions compared with other BNT-based lead-free piezoelectric ceramics. We expect that BNT-BF-ST lead-free piezoelectric ceramics are promising candidates as a novel ternary BNT-based system and can find potential applications in actuators.

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2Light Intensity 및 명암비 향상을 위한 마이크로 LED의 사파이어 기판 형상 변화 연구

저자 : 차유정 ( Yu-jung Cha ) , 곽준섭 ( Joon Seop Kwak )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 1호 발행 연도 : 2021 페이지 : pp. 8-15 (8 pages)

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Micro-LEDs can be applied to various parts of a product. However, it has disadvantages compared to general LEDs in large displays such as low efficiency, intensity, and contrast ratio, among others, owing to their short history of study. The simulations were carried out using ray-tracing software to investigate the change in light intensity and light distribution according to pattern shapes on the sapphire substrate of the flip-chip micro-LED (FC μ-LED) array. Three patterns-concave square patterns, convex square patterns, and Ag coated convex patterns-which existed on the opposite side of FC μ-LEDs (115 ㎛ × 115 ㎛) array, were applied. The intensity of FC μ-LEDs on the center of the receivers depends on the pattern depth with shape. The concave square patterns having FC μ-LEDs arrays show that decreasing intensity as the patterns depth. On the contrary, the convex square patterns having FC μ-LEDs arrays shows that increasing intensity as the patterns depth. In addition, the highest intensity shows that FC μ-LEDs having Ag-coated convex patterns on the opposite side of sapphire lead to a reduction in light crosstalk owing to the Ag film.

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3DLC 박막이 코팅된 폴리머 애자의 표면 및 물리적 특성

저자 : 김영곤 ( Young Gon Kim ) , 박용섭 ( Yong Seob Park )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 1호 발행 연도 : 2021 페이지 : pp. 16-20 (5 pages)

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In this study, we tried finding new materials to improve the stain resistance properties of polymer insulating materials. Using the filtered vacuum arc source (FVAS) with a graphite target source, DLC thin films were deposited on silicon and polymer insulator substrates depending on their thickness to confirm the surface properties, physical properties, and structural properties of the thin films. Subsequently, the possibility of using a DLC thin film as a protective coating material for polymer insulators was confirmed. DLC thin films manufactured in accordance with the thickness of various thin films exhibited a very smooth and uniform surface. As the thin film thickness increased, the surface roughness value decreased and the contact angle value increased. In addition, the elastic modulus and hardness of the DLC thin film slightly increased, and the maximum values of elastic modulus and hardness were 214.5 GPa and 19.8 GPa, respectively. In addition, the DLC thin film showed a very low leakage current value, thereby exhibiting electrical insulation properties.

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4포토 리소그래피 공정을 위한 Ti(10 nm)-Buffered층 위에 직접 성장된 고품질 무전사 단층 그래핀 공정

저자 : 오거룡 ( Keo-ryong Oh ) , 한이레 ( Yire-han ) , 엄지호 ( Ji-ho Eom ) , 윤순길 ( Soon-gil Yoon )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 1호 발행 연도 : 2021 페이지 : pp. 21-26 (6 pages)

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Single-layer graphene is grown directly on Ti-buffered SiO2 at 100℃. As a result of the AFM measurement of the Ti buffer layer, the roughness of approximately 0.2 nm has been improved. Moreover, the Raman measurement of graphene grown on it shows that the D/G intensity ratio is extremely small, approximately 0.01, and there are no defects. In addition, the 2D/G intensity ratio had a value of approximately 2.1 for single-layer graphene. The sheet resistance is also 89 Ω/□, demonstrating excellent characteristics. The problem was solved by using graphene and a lift-off patterning method. Low-temperature direct-grown graphene does not deteriorate after the patterning process and can be used for device and micro-patterning research.

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5다층 그래핀/유리 구조체의 적외선 열복사 특성 연구

저자 : 박경아 ( Kyung-ah Park ) , 임미경 ( Mikyung Lim ) , 정현준 ( Hyun-june Jung ) , 김재현 ( Jae-hyun Kim )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 1호 발행 연도 : 2021 페이지 : pp. 27-32 (6 pages)

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In this study, we fabricated multilayer graphene on a glass substrate by stacking the monolayer graphene synthesized via chemical vapor deposition. The electrical sheet resistance and optical transmittance were evaluated to confirm the quality of the stacked multilayer graphene. Using the fabricated multilayer graphene/glass structure, we characterized its thermal radiative property in terms of the integrated emissivity. The integrated emissivity of the multilayer graphene/glass structure was tuned from 0.91 to 0.72 when the number of graphene layers was changed from 1 to 12. We also demonstrated that the emissivity tunability provided a way to control the apparent temperature of an object that can be used in infrared stealth applications.

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6스퍼터링 질화탄소 박막의 트라이볼로지 및 전기적 특성의 기판 온도 영향

저자 : 박찬일 ( Chan Il Park )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 1호 발행 연도 : 2021 페이지 : pp. 33-38 (6 pages)

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Using facing target magnetron sputtering (FTMS) with a graphite target source, carbon nitride thin films were deposited on silicon and glass substrates at different substrate temperatures to confirm the tribological, electrical, and structural properties of thin films. The substrate temperatures were room temperature, 150℃, and 300℃. The tribology and electrical properties of the carbon nitride thin films were measured as the substrate temperature increased, and a study on the relation between these results and structural properties was conducted. The results show that the increase in the substrate temperature during the fabrication of the carbon nitride thin films increased the hardness and elastic modulus values, the critical load value was increased, and the residual stress value was reduced. Moreover, the increase in the substrate temperature during thin-film deposition was attributed to the improvement in the electrical properties of carbon nitride thin film.

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7태양전지 응용을 위한 ZnO:Al 박막의 전기적·물리적 특성에서 증착 온도의 영향

저자 : 박찬일 ( Chan Il Park )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 1호 발행 연도 : 2021 페이지 : pp. 39-43 (5 pages)

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In the case of ZnO:Al thin films, it is the best material that can replace ITO that is mainly used as a transparent electrode in electronic devices such as solar cells and flat-panel displays. In this study, ZnO:Al films were fabricated by using the RF dual magnetron sputtering method at various substrate temperatures. As the substrate temperature increased, the crystallinity of the ZnO:Al thin films was improved, and the electrical conductivity and electrical properties of the thin film improved owing to the increase in grain size. In addition, the surface roughness of the ZnO:Al thin films increased due to changes in the surface and density of the thin films. Moreover, the substrate temperature increased the density of thin films and improved their transmittance. To be applied to solar cells and other several electronic devices in the future, the hardness and adhesion properties of the thin film improve as the substrate temperature increases.

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8다파장 IR과 NIR 모듈의 평균 수명 예측에 관한 연구

저자 : 김동표 ( Dong Pyo Kim ) , 김경섭 ( Kyung Seob Kim )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 1호 발행 연도 : 2021 페이지 : pp. 44-49 (6 pages)

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Recently, infrared (IR) and near-infrared (NIR) light-emitting diodes (LEDs) were widely used for home medical applications owing to its low output power and wide exposed area for curing. For deep penetration of the light under the skin, multiple LEDs with wavelengths of 700~10,000 nm were located on a flexible printed circuit board. When multiple wavelengths of LEDs were soldered on a circuit board, the lifetime of LED module highly depends on LEDs with a short lifetime. The mean time to failure (MTTF) was able to calculate with the experimental results under high temperature and the Arrhenius model. The results of this study could help companies to approve the warranty of LED modules and its product.

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9진공인터럽터용 신규 접점소재에 대한 차단 성능 평가

저자 : 차영광 ( Young-kwang Cha ) , 이일회 ( Il-hoi Lee ) , 주흥진 ( Heung-jin Ju ) , 신태용 ( Tae-yong Shin ) , 박경태 ( Kyong-tae Park )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 1호 발행 연도 : 2021 페이지 : pp. 50-55 (6 pages)

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Copper-chromium alloys have been used as contact materials of vacuum interrupters in circuit breakers, but new materials with highly stable performance are required to break the high voltage and high current barrier due to the recent increase in breaking capacity. In this paper, a new contact material was fabricated from a ternary alloy instead of existing Cu-Cr alloys. Its breaking performance and endurance were verified from a synthetic test and compared with that of various contact materials. The test results verified that the breaking performance of the new contact material was excellent.

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10촉매법을 적용한 오존 저감형 플라즈마 기기

저자 : 전신영 ( Sin Young Jeon ) , 김동준 ( Dong Jun Kim ) , 김종엽 ( Jong Yeop Kim ) , 권진구 ( Jin Gu Gwon ) , 전용민 ( Young Min Jeon ) , 도계령 ( Gye Ryung Do ) , 이성의 ( Seong Eui Lee )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 34권 1호 발행 연도 : 2021 페이지 : pp. 56-62 (7 pages)

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In this study, we created a DBD plasma device and a MnO2 catalyst mesh filter for evaluating ozone reduction of devices via the catalyst method. The DBD plasma device was manufactured by applying MnO2 paste to soda lime glass via the screen-printing method. The MnO2 catalyst mesh filter was manufactured by mixing MnO2 powder with binder with a 10% difference in concentration from 10% to 50% and then applying it using the dip-coating method. Finally, we sintered a MnO2 catalyst mesh filter in an electric furnace. We evaluated the characteristics of ozone generation according to the MnO2 gas flow of DBD plasma devices, the opening ratio, and ozone reduction performance of the MnO2 catalyst filters. Ozone reduction performance was approximately 20.4% at MnO210 wt%, 37.8% at MnO2 30 wt% and 50% at MnO2 50 wt%.

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