Improved performance and thermal stability of perovskite solar cells prepared via a modified sequential deposition process
- Authors
- Kim, Seongtak; Chung, Taewon; Bae, Soohyun; Lee, Sang-Won; Lee, Kyung Dong; Kim, Hyunho; Lee, Seunghun; Kang, Yoonmook; Lee, Hae-Seok; Kim, Donghwan
- Issue Date
- 2월-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Sequential deposition method; Conversion rate; Perovskite; Solar cells; Thermal stability
- Citation
- ORGANIC ELECTRONICS, v.41, pp.266 - 273
- Indexed
- SCIE
SCOPUS
- Journal Title
- ORGANIC ELECTRONICS
- Volume
- 41
- Start Page
- 266
- End Page
- 273
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/84830
- DOI
- 10.1016/j.orgel.2016.11.014
- ISSN
- 1566-1199
- Abstract
- In conventional sequential deposition, PbI2-free CH3NH3PbI3 perovskite films can be achieved when the PbI2 substrate reacts with a relatively low-concentration CH3NH3I solution (< 8 mg of CH3NH3I per 1 mL of IPA) but the film that is formed has only sparse and uneven coverage. On the other hand, a dense CH3NH3PbI3 perovskite film can be formed on a mesoporous TiO2 substrate when the PbI2 substrate reacts with a relatively high-concentration MAI solution (> 8 mg of CH3NH3I per 1 mL of IPA), but unreacted PbI2 is still present in CH3NH3PbI3 layer in such cases. Here, we developed organic-inorganic perovskite solar cells with high efficiency by preparing dense and PbI2-free films using a modified sequential deposition process. By utilizing the reaction behavior between PbI2 and MAI, solar cells with an average power-conversion efficiency of 15.1% and high reproducibility and stability were achieved. (C) 2016 Elsevier B.V. All rights reserved.
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Collections - Graduate School of Energy and Environment (KU-KIST GREEN SCHOOL) > Department of Energy and Environment > 1. Journal Articles
- College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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