2D Perovskite Stabilized Phase-pure Formamidinium Perovskite Solar Cellsopen access
- Authors
- Lee, Jin-Wook; Dai, Zhenghong; Han, Tae Hee; Choi, Chungseok; Chang, Sheng-Yung; Lee, Sung-Joon; De Marco, Nicholas; Zhao, Hongxiang; Sun, Pengyu; Huang, Yu; Yang, Yang
- Issue Date
- Aug-2018
- Publisher
- NATURE PUBLISHING GROUP
- Citation
- NATURE COMMUNICATIONS, v.9, no.1, pp.1 - 10
- Indexed
- SCIE
SCOPUS
- Journal Title
- NATURE COMMUNICATIONS
- Volume
- 9
- Number
- 1
- Start Page
- 1
- End Page
- 10
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/16151
- DOI
- 10.1038/s41467-018-05454-4
- ISSN
- 20411723
- Abstract
- Compositional engineering has been used to overcome difficulties in fabricating high-quality phase-pure formamidinium perovskite films together with its ambient instability. However, this comes alongside an undesirable increase in bandgap that sacrifices the device photo-current. Here we report the fabrication of phase-pure formamidinium-lead tri-iodide perovskite films with excellent optoelectronic quality and stability. Incorporation of 1.67 mol% of 2D phenylethylammonium lead iodide into the precursor solution enables the formation of phase-pure formamidinium perovskite with an order of magnitude enhanced photoluminescence lifetime. The 2D perovskite spontaneously forms at grain boundaries to protect the formamidinium perovskite from moisture and suppress ion migration. A stabilized power conversion efficiency (PCE) of 20.64% (certified stabilized PCE of 19.77%) is achieved with a short-circuit current density exceeding 24 mA cm(-2) and an open-circuit voltage of 1.130 V, corresponding to a loss-in-potential of 0.35 V, and significantly enhanced operational stability.
- Files in This Item
-
- Appears in
Collections - 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/16151)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.