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- W2802132899 abstract "It is well known that electron transport layer (ETL) plays an indispensable role in the planar heterojunction perovskite solar cells (PSCs). TiO 2 is widely used as an ETL material due to its excellent transport properties, however, the presence of defects in the TiO 2 layer diminishes the power conversion efficiency (PCE) of the devices. Herein, we introduce a method of low-temperature TiCl 4 treatment to deposit a TiO x layer on the surface of TiO 2 film, which can effectively passivate trap states at the TiO 2 surface. Moreover, the treating process is optimized to be 30[Formula: see text]min using a 40[Formula: see text]mM TiCl 4 aqueous solution. Benefiting from this, we obtain the champion device with the highest PCE of 18.47%, which is mainly due to the reduction of surface defects and the deposition of the well-crystallized perovskite films. Besides, the modified PSCs exhibit an average PCE of 17.59%, which is much better than the control devices." @default.
- W2802132899 created "2018-05-17" @default.
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- W2802132899 date "2018-04-01" @default.
- W2802132899 modified "2023-09-30" @default.
- W2802132899 title "Boosting efficiency of planar heterojunction perovskite solar cells by a low temperature TiCl<sub>4</sub> treatment" @default.
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- W2802132899 doi "https://doi.org/10.1142/s2010135x18500091" @default.
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