Effects of temperature and coating speed on the morphology of solution-sheared halide perovskite thin-film = 용액전단법을 이용한 할라이드 페로브스카이트 박막 코팅에서 기판온도와 코팅속도가 막질에 미치는 영향

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We have conducted a systematic study of crystallization of perovskite thin-film during solution shearing to elucidate how parameters such as substrate temperature and coating speed influences the crystallinity and morphology of the thin-film. Four distinct phases are identified and a morphology-phase map is constructed. Formation of these phases was attributed to a delicate balance between supersaturation rate and rate of solution supply to the meniscus, which dictated the nucleation and the crystal growth process. An optimal phase window is identified and the photovoltaic device performance with the chosen condition exhibits power conversion efficiency over 15%, which is comparable to a reference device prepared by the conventional spin-coating process. Furthermore, a large area perovskite film of $57 cm^2$ is prepared. Small-area devices from different locations within the large-area film show uniform efficiencies with deviation coefficient of 4.2%, illustrating the high uniformity of thin-film.
Advisors
Shin, Byungharesearcher신병하researcher
Description
한국과학기술원 :신소재공학과,
Publisher
한국과학기술원
Issue Date
2019
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 신소재공학과, 2019.2,[ii, 48 p. :]

Keywords

perovskite▼asolar cell▼ashearing▼ablade coating▼alarge scale; 페로브스카이트▼a태양전지▼a대면적▼a시어링▼a블레이드 코팅

URI
http://hdl.handle.net/10203/266472
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=843282&flag=dissertation
Appears in Collection
MS-Theses_Master(석사논문)
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