콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Rapid large-grain (> 100 mu m) formation of organic-inorganic perovskite thin films via shear deposition for photovoltaic application
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2019-10
- 저자명 홍기하,송지호,최지혜,정중희,이동연,변혜령,정문석,김재균
- 학술지명 SOLAR ENERGY
- 발행처명 PERGAMON-ELSEVIER SCIENCE LTD
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 8
논문 초록 (Abstract)
High-speed continuous deposition of solution-processed perovskite thin films with controlled microstructural morphology has been intensively pursued toward practical commercialization of high-efficiency perovskite solar cells. In order to meet this urgent demand in a timely manner, we present a rapid (similar to 5 mm.s(-1)) scalable meniscus-controlled coating method to deposit large-grained ( > 100 mu m) perovskite thin films over large area. Shearing movement of the meniscus of perovskite solution, confined by the hydrophobic-treated top and temperature-controlled bottom plates enables a rapid crystallization of perovskite grains, also facilitating the continuous influx of solutes at the meniscus for continuous film growth with less consumption of perovskite solution. Optical and structural analyses revealed that the rapid-shear-deposited perovskite thin films possess a large-grained, densely-packed and highly-crystalline phase. Consequently, perovskite solar cell based this film exhibits the power conversion efficiency of 10.9% even without compositional engineering and additive controls. Therefore, it can be claimed that this rapid shearing deposition of perovskite solution paves a way to achieve a cost-competitive production of the high-efficiency solar cell.
