NDLI: Achieving long-term stable perovskite solar cells <i>via</i> ion neutralization

Content Provider	Royal Society of Chemistry (RSC)
Author	Kong, Jaemin Kang, Hongkyu Lee, Jinho Lee, Seongyu Kim, Geunjin Kim, Heejoo Lee, Kwanghee Kim, Junghwan Kim, Tae Kyun Back, Hyungcheol
Copyright Year	2016
Abstract	Despite recent reports of high power conversion efficiency (PCE) values of over 20%, the instability of perovskite solar cells (PSCs) has been considered the most serious obstacle toward their commercialization. By rigorously exploring the self-degradation process of planar-type PSCs using typical metal electrodes (Ag or Al), we found that the corrosion of the metal electrodes by inherent ionic defects in the perovskite layers is a major origin of intrinsic device degradation even under inert conditions. In this work, we have developed a new concept of a chemical inhibition in PSCs using amine-mediated metal oxide systems and succeeded in chemically neutralizing mobile ionic defects through mutual ionic interaction. As a consequence, we realized planar-type PSCs with long-term stability that maintain nearly 80% of their initial PCEs even after 1 year (9000 h) of storage under nitrogen and 80% of their initial PCEs after 200 h in ambient conditions without any encapsulation.
Starting Page	1258
Ending Page	1263
Page Count	6
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	9
Issue Number	4
Journal	Energy & Environmental Science
DOI	10.1039/c6ee00612d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	PSCs Perovskite Corrosion Nitrogen
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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