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Grain Boundary Passivation Modulated by Molecular Doping for High-Performance Perovskite Solar Cells

Yangyang Hao, Yue Liu*, Guorui Cao*

College of Chemical and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China

* Corresponding Authors: Guorui Cao. Email: email; Yue Liu. Email: email

(This article belongs to this Special Issue: Perovskite Solar Cells)

Journal of Renewable Materials 2022, 10(12), 3505-3519. https://doi.org/10.32604/jrm.2022.023122

Abstract

Aiming to reduce the defects of perovskite film and improve carrier transport, an organic small molecule, benzo [d]isothiazol-3(2H)-one 1,1-dioxide (OBS), is introduced as an additive in the solution-processing of perovskite and prepare uniform perovskite films with a continuous distribution of OBS at grain boundaries. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy are conducted to reveal the interactions of hydrogen bonding and coordination bonding between OBS and perovskite. Various characterizations (including X-ray diffraction, UV-vis spectroscopy, electrochemical impedance spectroscopy, etc.) are conducted to uncover the effect of OBS on device performance. Consequently, high efficiency of 23.26% is obtained for the OBS-treated device, while the control device shows only a companion efficiency of 21.60%.

Graphical Abstract

Grain Boundary Passivation Modulated by Molecular Doping for High-Performance Perovskite Solar Cells

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Cite This Article

Hao, Y., Liu, Y., Cao, G. (2022). Grain Boundary Passivation Modulated by Molecular Doping for High-Performance Perovskite Solar Cells. Journal of Renewable Materials, 10(12), 3505–3519.



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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