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정렬번호 19 
메인 제목 Hot electron research of SCALE laboratory was highlighted in Electronic Newspaper 
메인 소개 내용 Hot electron research of SCALE laboratory was highlighted in Electronic Newspaper 

Hot electron research of SCALE laboratory was highlighted in Electronic Newspaper

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[IBS 소재·부품 연구 성과]<1>핫전자로 태양전지·촉매 효율 강화

http://www.etnews.com/20191118000175


일본의 수출규제조치로 소재·부품 분야 국산화 노력이 계속되는 가운데 국내 유일 기초과학 연구개발(R&D) 기관 기초과학연구원(IBS)이 새롭게 주목받고 있다. 그동안 기술 산업화와 다소 동떨어진 연구기관이라는 평가를 받아온 IBS가 뛰어난 연구 성과를 기반으로 실제 산업 분야 난제 해결에 기여함으로써 이 같은 오해를 불식시키고 있다. 소재·부품 산업을 혁신하는 IBS 연구 성공 사례를 2회에 걸쳐 그려본다.

지난 2012년 개원해 다양한 연구를 수행해온 IBS가 최근 중요성이 커진 소재·부품 분야에서 혁신 성과를 내놓고 있다. 대표 사례가 지난 8월 산하 나노물질 및 화학반응 연구단의 '핫전자' 활용 연구다. 연구단은 기초과학기술 영역에 있는 핫전자를 활용, 효율을 높인 태양전지 개발에 성공했다.


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<IBS가 개발한 페로브스카이트 기반 핫전자 태양전지(IBS제공)>


핫전자는 빛 에너지를 흡수했을 때 금속 표면에 생성되는 고에너지 전자다. 에너지 준위가 높아 활성도가 높다. 그동안은 실제 활용보다는 차세대 기술로 여겨지던 분야다. 포집해 활용하기가 극히 어려웠기 때문이다. 핫전자는 수 피코초(1조분의 1)만에 사라져 버리고 확산거리도 수십 나노미터()에 불과하다.

연구단은 핫전자 수명과 확산거리를 대폭 늘리는 방안을 찾아내 실제 태양전지에 적용하는데 성공했다. 빛을 잘 흡수하는 페로브스카이트 소재를 접목하는 새로운 시도에 나선 결과다. 페로브스카이트 소재를 접목했을 때 핫전자 수명이 기존보다 22배 오래 유지됐다.

이 결과로 빛이 전력화 되는 효율도 높일 수 있다. 이론상으로는 기존 한계를 뛰어넘어 태양전지 효율을 66%까지 끌어올리는 핵심 기반이 될 것이라는 예측도 내놓고 있다.


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<IBS가 개발한 페로브스카이트 기반 핫전자 태양전지 구조 (IBS 제공)>

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공지 Prof. Park was elected to be the member of Korean Academy of Science and Technology (2023). 관리자 2022.11.28 1084
공지 SCALE lab members attended AVS 68th International Symposium & Exhibition (Pittsburgh, PA USA, November 6-11, 2022) 관리자 2022.11.28 1113
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공지 Dr. Woosuk Choi’s work (in collaboration with Prof. Ryong Ryoo) was published in Carbon and selected as Issue Cover 관리자 2022.04.18 2995
공지 Group members got poster awards from 18JKSC, PAL user meeting, and IWOX-XIII 관리자 2022.02.15 4757
공지 Yongman Kim’s paper has been selected as the Back Cover of Advanced Materials Interfaces 관리자 2022.02.15 1998
공지 Prof. Park chaired the 13th International Workshop on Oxide Surfaces (IWOX-XIII). 관리자 2022.02.15 1490
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공지 Dr. Siwoo Lee’s hot electron work was introduced in media 관리자 2021.03.08 2721
공지 Outside Front Cover was selected for Hanseul’s Catalysis Science & Technology paper 관리자 2021.03.08 2652
공지 Park Yujin was selected as one of recipient of Posco Science Fellowship in 2020 관리자 2020.11.16 7612
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공지 Dr. Mondal’s Advanced Functional Materials paper was selected as Inside Front Cover. 관리자 2020.01.27 21566
공지 Prof. Park gave an on-line talk in MRS Webinar Series for the special issue about “ 관리자 2020.01.27 22103
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공지 The Fifth Symposium of Center for Nanomaterials and Chemical Reactions 관리자 2018.05.14 45918
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공지 EEWS 2016 Workshop was introduced in ACS Energy Letters 관리자 2017.02.17 83826
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공지 Hyosun Lee and Changwhan Lee got Samsung Humantech Award 관리자 2017.02.07 71021
공지 Graphene/Pt(111) STM image was shown at Art in Science during IBS Symposium 관리자 2016.11.27 78718
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공지 Best Poster Award at ISFM 2016 관리자 2016.03.07 78017
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