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- W2516209069 abstract "Tuning the band alignment is proved to be an effective way to facilitate carrier transportation and thus enhance the power conversion efficiency (PCE) of solar cells. Doping the compact layer with metal ions or modifying the interfaces among functional layers in perovskite solar cells (PSCs) can appreciably improve the PCE of PSCs. Inspired by the rare earth elemental doping of TiO2, which has witnessed the success in photocatalysis and dye-sensitized solar cells, we firstly demonstrated here that La3+ doping in the mesoporous TiO2 layer of a mesostructured PSC can tune its Fermi level and thus significantly enhance the device PCE. Systematic analysis reveals that doping La3+ into TiO2 raises the Fermi level of TiO2 through scavenging oxygen and inducing vacancies, which subsequently increases the open circuit voltage and the fill factor while reducing the series resistance of the PSC using La3+-doped TiO2 as a mesoporous layer. As a result, a PCE of 15.42% is achieved, which is appreciably higher than the PCE of a device with undoped TiO2 (12.11%)." @default.
- W2516209069 created "2016-09-16" @default.
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- W2516209069 date "2016-01-01" @default.
- W2516209069 modified "2023-10-03" @default.
- W2516209069 title "Tuning the Fermi-level of TiO<sub>2</sub>mesoporous layer by lanthanum doping towards efficient perovskite solar cells" @default.
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- W2516209069 doi "https://doi.org/10.1039/c6nr05917a" @default.
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