File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

신태주

Shin, Tae Joo
Synchrotron Radiation Research Lab.
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Structural features and their functions in surfactant-armoured methylammonium lead iodide perovskites for highly efficient and stable solar cells

Author(s)
Jung, MinsuShin, Tae JooSeo, JangwonKim, GwisuSeok, Sang Il
Issued Date
2018-08
DOI
10.1039/C8EE00995C
URI
https://scholarworks.unist.ac.kr/handle/201301/24834
Fulltext
http://pubs.rsc.org/en/content/articlelanding/2018/ee/c8ee00995c#!divAbstract
Citation
ENERGY & ENVIRONMENTAL SCIENCE, v.11, no.8, pp.2188 - 2197
Abstract
Methylammonium lead iodide perovskites have limited practical applications due to a lack of stability under operating conditions. Environmental stability under heating has not yet been achieved, although recent studies modifying perovskites with long organic cations have reported the progress of stabilisation under humid conditions. In this work, we report the structural evolution of long alkylammonium-modified MAPbI3 and its functions for highly efficient and stable solar cells. As an encapsulating agent, octylammonium (OA) cation produced individual MAPbI3 grains in full armour without the formation of layered structures in contrast to butylammonium (BA) and phenethylammonium (PEA) cations. Our OA-armoured MAPbI3 achieved a stabilised power conversion efficiency of 20.1% without a deterioration of charge transport properties due to highly preferential orientation suppressing non-radiative recombination. The structural features also led to a much improved thermal stability at 85 °C in ambient atmosphere retaining 80% of the initial efficiency after 760 h without any encapsulation, as well as water tolerance. This work addresses widespread concerns associated with the photovoltaic efficiency and stability of MAPbI3 by exploring the inter-relationship between structural features and their functions in surfactant-modified perovskites.
Publisher
ROYAL SOC CHEMISTRY
ISSN
1754-5692
Keyword
THIN-FILMSPERFORMANCEDEGRADATIONSTABILITYLAYERS

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.