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- W2777844265 abstract "Abstract Rapid extraction of photogenerated charge carriers is essential to achieve high efficiencies with perovskite solar cells (PSCs). Here, a new mesoscopic architecture as electron‐selective contact for PSCs featuring 40 nm sized TiO 2 beads endowed with mesopores of a few nanometer diameters is introduced. The bimodal pore distribution inherent to these films produces a very large contact area of 200 m 2 g −1 whose access by the perovskite light absorber is facilitated by the interstitial voids between the particles. Modification of the TiO 2 surface by CsBr further strengthens its interaction with the perovskite. As a result, photogenerated electrons are extracted rapidly producing a very high fill factor of close to 80% a V OC of 1.14 V and a PCE up to 21% with negligible hysteresis." @default.
- W2777844265 created "2018-01-05" @default.
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- W2777844265 date "2017-12-20" @default.
- W2777844265 modified "2023-10-17" @default.
- W2777844265 title "Boosting the Efficiency of Perovskite Solar Cells with CsBr‐Modified Mesoporous TiO<sub>2</sub> Beads as Electron‐Selective Contact" @default.
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- W2777844265 doi "https://doi.org/10.1002/adfm.201705763" @default.
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