Efficient planar heterojunction perovskite solar cells with Li-doped compact TiO2 layer

By Detao Liu, Shibin Li, Peng Zhang, Yafei Wang, Rui Zhang, H. Sarvari, Feng Wang, Jiang Wu, Zhiming M. Wang, Z. Chen. 2017

255 citations recorded by the source corpus.

Perovskite solar cells (PSCs) have been developed rapidly in recent time, and efficient planar PSCs are regarded as the most promising alternative to the Si solar cells. In this study, we demonstrated that Li-doping of compact TiO2 can reduce the density of electron traps and increase the conductivity of the electron transport layer (ETL) of PSCs. Due to the improved electronic property of ETL, the Li-doped compact TiO2 based planar heterojunction PSCs exhibit negligible hysteretic J-V behavior. Comparing with the undoped compact TiO2 based PSCs, the power conversion efficiency (PCE) of the Li-doped compact TiO2 film based PSCs is improved from 14.2% to 17.1%. Fabrication of highly efficient planar PSCs provides a pathway for commercialization of PSCs.

Subfields: Electrical and Electronic Engineering, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/7a8bcadc0b0613cce2b1ca8191658d308a7a6ece

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Citations in the corpus

• Performance optimization of CH3NH3Pb(I1-xBrx)3 based perovskite solar cells by comparing different ETL materials through conduction band offset engineering (2020, background): “Even though the doped TiO2 layers have been used to improve the performance of the PSCs [14,15] but the stability is compromised due to doping.”