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Updated: Apr 7, 2026
Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
Perovskite solar cell using a two-dimensional titania nanosheet thin film as the compact layer
Can Li1, Yahui Li1, Yujin Xing2
1†Key Lab for Advance Materials Processing Technology of Education Ministry, State Key Lab of New Ceramic and Fine Processing, and School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China.
Abstract:
The compact layer plays an important role in conducting electrons and blocking holes in perovskite solar cells (PSCs). Here, we use a two-dimensional titania nanosheet (TNS) thin film as the compact layer in CH3NH3PbI3 PSCs. TNS thin films with thicknesses ranging from 8 to 75 nm were prepared by an electrophoretic deposition method from a dilute TNS/tetrabutylammonium hydroxide solution. The TNS thin films contact the fluorine-doped tin oxide grains perfectly. Our results show that a 8-nm-thick TNS film is sufficient for acting as the compact layer. Currently, the PSC with a TNS compact layer has a high efficiency of 10.7% and relatively low hysteresis behavior.
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