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Tailoring of Electron-Collecting Oxide Nanoparticulate Layer for Flexible Perovskite Solar Cells
- Authors
- Shin S.S.[Shin S.S.]; Yang W.S.[Yang W.S.]; Yeom E.J.[Yeom E.J.]; Lee S.J.[Lee S.J.]; Jeon N.J.[Jeon N.J.]; Joo Y.-C.[Joo Y.-C.]; Park I.J.[Park I.J.]; Noh J.H.[Noh J.H.]; Seok S.I.[Seok S.I.]
- Issue Date
- 19-May-2016
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY LETTERS, v.7, no.10, pp.1845 - 1851
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICAL CHEMISTRY LETTERS
- Volume
- 7
- Number
- 10
- Start Page
- 1845
- End Page
- 1851
- 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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