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A two-step route to planar perovskite cells exhibiting reduced hysteresis

Title
A two-step route to planar perovskite cells exhibiting reduced hysteresis
Authors
Ip, Alexander H.Quan, Li NaAdachi, Michael M.McDowell, Jeffrey J.Xu, JixianKim, Dong HaSargent, Edward H.
Ewha Authors
김동하
SCOPUS Author ID
김동하scopus
Issue Date
2015
Journal Title
APPLIED PHYSICS LETTERS
ISSN
0003-6951JCR Link1077-3118JCR Link
Citation
vol. 106, no. 14
Publisher
AMER INST PHYSICS
Indexed
SCI; SCIE; SCOPUS WOS
Abstract
A simple two-step method was used to produce efficient planar organolead halide perovskite solar cells. Films produced using solely iodine containing precursors resulted in poor morphology and failed devices, whereas addition of chlorine to the process greatly improved morphology and resulted in dense, uniform perovskite films. This process was used to produce perovskite solar cells with a fullerene-based passivation layer. The hysteresis effect, to which planar perovskite devices are otherwise prone, was greatly suppressed through the use of this interface modifier. The combined techniques resulted in perovskite solar cells having a stable efficiency exceeding 11%. This straightforward fabrication procedure holds promise in development of various optoelectronic applications of planar perovskite films. (C) 2015 AIP Publishing LLC.
DOI
10.1063/1.4917238
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자연과학대학 > 화학·나노과학전공 > Journal papers
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