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Higher Efficiency Bifacial Type Hetero-Junction Solar Cells with Proposed Designs
Somin Park,Youngwoo Jeon,Hongrae Kim,Minkyu Jang,Donghyun Oh,Junsin Yi,Jinjoo Park 한국진공학회 2021 한국진공학회 학술발표회초록집 Vol.2021 No.2
We studied about 'Hetero-junction solar cell with intrinsic thin layer (HIT) solar cells of bifacial type structure with optimized electrode design. We designed front electrode of the cells that have 20 busbars with 0.07 mm width and 85 fingers with 70 µm width. As a results mono-facial type HIT solar cell have efficiency (ク) 22.87%. The ク of the bifacial type HIT cells was examined by varied conditions. We achieved ク, 26.3% that is higher than mono-facial HIT cell. The solar cell properties showed 19.7%, 15% increase in the Jsc and ク by made mono-facial type HIT solar cell.
Somin Park,Youngho Kim,Jeong Seop Sim 한국차세대컴퓨팅학회 2021 한국차세대컴퓨팅학회 학술대회 Vol.2021 No.05
길이가 같은 두 순위문자열의 상대적인 순위가 일치하면 순위동형이라한다. 순위문자열의 순위동형을 표현하는 방법들에는 접두사에서의 순위를 표현한 최근접이웃표현과 전체 문자열에서의 순위를 표현한 자연표현법, 선행자의 위치를 표현한 시그니처 표현법 등이 있다. 본 논문에서는 다양한 순위표현법에 따른 순위동형 검증시간을 실험을 통해 비교하고 분석한다.
Microstructure guided multi-scale liquid patterning on an open surface
Park, Dohyun,Kang, Myeongwoo,Choi, Jin Woo,Paik, Sang-Min,Ko, Jihoon,Lee, Somin,Lee, Younggyun,Son, Kyungmin,Ha, Jungmin,Choi, Munseok,Park, Woohyun,Kim, Ho-Young,Jeon, Noo Li The Royal Society of Chemistry 2018 Lab on a chip Vol.18 No.14
<P>Liquid patterning is a quintessential aspect in cell-based screening. While there are a variety of methods to handle microliquids utilizing surface treatments, complex microfluidic systems, and automated dispensing, most of the stated methods are both expensive and difficult to implement. Here, we present a fast multi-scale microliquid-patterning method on an open surface using embossed microstructures without surface modification. Arrays of micropillars can trap microliquids when a bulk drop is swept by an elastic sweeper on polystyrene (PS) substrates. The patterning mechanism on a basic form of a 2 × 2 rectangular array of circular pillars is analyzed theoretically and verified with experiments. Nanoliter-to-microliter volumes of liquids are patterned into various shapes by arranging the pillars based on the analysis. Furthermore, an array of geometrically modified pillars can capture approximately 8000 droplets on a large substrate (55 mm × 55 mm) in one step. Given the simplistic method of wipe patterning, the proposed platform can be utilized in both manual benchtop and automated settings. We will provide proof of concept experiments of single colony isolation using nanoliter-scale liquid patterning and of human angiogenic vessel formation using sequential patterning of microliter-scale liquids.</P>
Optimization grid design of rear side in bifacial PERC solar cells
Somin Park,Youngwoo Jeon,Hongrae Kim,Minkyu Jang,Donghyun Oh,Junsin Yi,Jinjoo Park 한국진공학회 2021 한국진공학회 학술발표회초록집 Vol.2021 No.2
Bifacial solar cells are expected in the field of solar cells. we obtained the value of the bifacial- passivated emitter rear contact (bi-PERC) solar cell structure. The front is fixed to 12 BB, BB width of 0.11mm, 100 finger with keeping width of 30 µm. The rear conditions: The number of BB is 12, 16, 20 and 24, the width of the BB is 0.11, 0.13, 0.15, 0.17 and 0.19 mm. And the number of fingers is 80, 90, 100, 110 and 120, the width of the finger is 30, 45 and 60 µm. 24 BB, BB width of 0.11mm, 100 fingers, finger width of 30 µm (pitch 1.57 mm), we got optimal results in 26.48% efficiency.
경제교육 프로그램이 발달장애 청년의 금전 관리기술과 금융피해 예방기술에 미치는 영향
박소민 ( Park Somin ),박지연 ( Park Jiyeon ) 한국지적장애교육학회 2022 지적장애연구 Vol.24 No.3
본 연구에서는 경제교육 프로그램을 고안하여 실행한 후 이 프로그램이 발달장애 청년의 금전 관리기술과 금융피해 예방기술에 미치는 영향을 알아보았다. 본 연구의 참여자는 서울 A 언어학습발달연구소의 이용자로서 장애 청년 자조 모임에 참여하고 있는 만 19세∼만 30세의 발달장애 청년 24명이다(실험집단 12명, 통제집단 12명). 이 중 실험집단에게는 8회기의 소모임과 4회의 비대면 개별활동으로 구성된 경제교육 프로그램을 제공하였다. 중재 효과의 확인을 위하여 중재 실시 전과 후 금전 관리기술과 금융피해 예방기술의 변화 정도에서 두 집단 간에 차이가 있는지 독립표본 t 검정을 통해 분석하였다. 분석 결과, 발달장애 청년의 금전 관리기술과 금융피해 예방기술에서 실험집단과 통제집단 간 유의한 차이가 나타났다. 본 연구는 발달장애 청년들이 필요로 하는 중요한 기술들을 다루었고, 이들에게 맞는 교수전략을 적용하였으며, 소모임과 비대면 개별활동 회기를 병행하여 프로그램의 효율성을 높였다는 점에서 의의가 있다. The purpose of this study is to develop and implement economic education program for youth with developmental disabilities and examine its effects on money management skills and financial damage prevention skills. Participants were 24 youth with developmental disabilities aged 19∼30 who were attending A language and learning center located in Seoul. The youth belonged to a self-help group facilitated by the center. The experimental group (12 youth) was provided with small group economic education program for 8 sessions and online individual activities for 4 sessions while no intervention was given to the control group (12 youth). Independent t-tests were conducted to find out statistical differences in money management skills and financial damage prevention skills between two groups. The results showed that a significant difference was found between groups in both dependent variables. This study is significant in that the program dealt with critical skills for financial damage prevention based on the needs of youth with developmental disabilities, utilized the instructional strategies tailored to the youth, and increased the efficiency of the program through combining small group sessions and online individual sessions.