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Intrinsic Behavior of CH ₃ NH ₃ PbBr ₃ Single Crystals under Light Illumination

https://doi.org/10.1002/admi.201801206

Ecker, Benjamin R.; Wang, Congcong; Wei, Haotong; Yuan, Yongbo; Huang, Jinsong; Gao, Yongli (August 2018, Advanced Materials Interfaces)

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Environmental Surface Stability of the MAPbBr ₃ Single Crystal

https://doi.org/10.1021/acs.jpcc.7b12740

Wang, Congcong; Ecker, Benjamin R.; Wei, Haotong; Huang, Jinsong; Gao, Yongli (February 2018, The Journal of Physical Chemistry C)

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Light-Induced Degradation of CH ₃ NH ₃ PbI ₃ Hybrid Perovskite Thin Film

https://doi.org/10.1021/acs.jpcc.6b11853

Li, Youzhen; Xu, Xuemei; Wang, Congcong; Ecker, Ben; Yang, Junliang; Huang, Jinsong; Gao, Yongli (February 2017, The Journal of Physical Chemistry C)

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Valence band dispersion measurements of perovskite single crystals using angle-resolved photoemission spectroscopy

https://doi.org/10.1039/c6cp07176g

Wang, Congcong; Ecker, Benjamin R.; Wei, Haotong; Huang, Jinsong; Meng, Jian-Qiao; Gao, Yongli (January 2017, Phys. Chem. Chem. Phys.)

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Argon Plasma Treatment to Tune Perovskite Surface Composition for High Efficiency Solar Cells and Fast Photodetectors

https://doi.org/10.1002/adma.201705176

Xiao, Xun; Bao, Chunxiong; Fang, Yanjun; Dai, Jun; Ecker, Benjamin_R; Wang, Congcong; Lin, Yuze; Tang, Shi; Liu, Ye; Deng, Yehao; et al (January 2018, Advanced Materials)

Abstract The surface composition of perovskite films is very sensitive to film processing and can deviate from the optimal, which generates unfavorable defects and results in efficiency loss in solar cells and slow response speed in photodetectors. An argon plasma treatment is introduced to modify the surface composition by tuning the ratio of organic and inorganic components as well as defect type before deposition of the passivating layer. It can efficiently enhance the charge collection across the perovskite–electrode interface by suppressing charge recombination. Therefore, perovskite solar cells with argon plasma treatment yield enhanced efficiency to 20.4% and perovskite photodetectors can reach their fastest respond speed, which is solely limited by the carrier mobility.
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