Colloidally prepared La-doped BaSnO3 electrodes for efficient, photostable perovskite solar cells
- Authors
- Shin, Seong Sik; Yeom, Eun Joo; Yang, Woon Seok; Hur, Seyoon; Kim, Min Gyu; Im, Jino; Seo, Jangwon; Noh, Jun Hong; Seok, Sang Il
- Issue Date
- 14-4월-2017
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
- Keywords
- perovskite; BaSnO3; doped; solar cells; photostability
- Citation
- SCIENCE, v.356, no.6334, pp.167 - 171
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCIENCE
- Volume
- 356
- Number
- 6334
- Start Page
- 167
- End Page
- 171
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/83761
- DOI
- 10.1126/science.aam6620
- ISSN
- 0036-8075
- Abstract
- Perovskite solar cells (PSCs) exceeding a power conversion efficiency (PCE) of 20% have mainly been demonstrated by using mesoporous titanium dioxide (mp-TiO2) as an electron-transporting layer. However, TiO2 can reduce the stability of PSCs under illumination (including ultraviolet light). Lanthanum (La)-doped BaSnO3 (LBSO) perovskite would be an ideal replacement given its electron mobility and electronic structure, but LBSO cannot be synthesized as well-dispersible fine particles or crystallized below 500 degrees C. We report a superoxide colloidal solution route for preparing a LBSO electrode under very mild conditions (below 300 degrees C). The PSCs fabricated with LBSO and methylammonium lead iodide (MAPbI(3)) show a steady-state power conversion efficiency of 21.2%, versus 19.7% for a mp-TiO2 device. The LBSO-based PSCs could retain 93% of their initial performance after 1000 hours of full-Sun illumination.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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