Tailoring of Electron-Collecting Oxide Nanoparticulate Layer for Flexible Perovskite Solar Cells
- Authors
- Shin, Seong Sik; Yang, Woon Seok; Yeom, Eun Joo; Lee, Seon Joo; Jeon, Nam Joong; Joo, Young-Chang; Park, Ik Jae; Noh, Jun Hong; Seok, Sang Il
- Issue Date
- May-2016
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY LETTERS, v.7, no.10, pp 1845 - 1851
- Pages
- 7
- Journal Title
- JOURNAL OF PHYSICAL CHEMISTRY LETTERS
- Volume
- 7
- Number
- 10
- Start Page
- 1845
- End Page
- 1851
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147063
- DOI
- 10.1021/acs.jpclett.6b00295
- ISSN
- 1948-7185
- Abstract
- Low-temperature-processed perovskite solar cells (PSCs), especially those fabricated on flexible substrates, exhibit device performance that is worse than that of high-temperature-processed PSCs. One of the main reasons for the inferior performance of low-temperature-processed PSCs is the loss of photogenerated electrons in the electron collection layer (ECL) or related interfaces, i.e., indium tin oxide/ECL and ECL/perovskite. Here, we report that tailoring of the energy level and electron transporting ability in oxide ECLs using Zn2SnO4 nanoparticles and quantum dots notably minimizes the loss of photogenerated electrons in the low-temperature-fabricated flexible PSC. The proposed ECL with methylammonium lead halide [MAPb-(I0.9Br0.1)(3)] leads to fabrication of significantly improved flexible PSCs with steady-state power conversion efficiency of 16.0% under AM 1.5G illumination of 100 mW cm(-2) intensity. These results provide an effective method for fabricating high-performance, low-temperature solution-processed flexible PSCs.
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