首页|Polymer passivation of defects in inorganic perovskite solar cells

Polymer passivation of defects in inorganic perovskite solar cells

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Inorganic perovskite solar cells(IPSCs)have attained attention due to their excellent thermal and phase stability.In this work,we demonstrate a novel approach for fabricating IPSCs,using the strategies of interface passivation and anti-solvent before spin-coating perovskite.Poly(methyl methacrylate)(PMMA)and chlorobenzene(CB)are used as passivator and anti-solvent,respectively.The CB improves the perovskite crystal morphology.Meanwhile,PMMA passivates the defects between poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT∶PSS)and perovskite layer,thus increasing the short-circuit current.Excitingly,we find that PMMA benefits the grain boundaries(GBs)of perovskite,which makes it more humidity-resistant,increasing the stability of perovskite film.Especially,PMMA mitigates interfacial charge losses,and the devices based on CsPbI3-xBrx passivated by PMMA ex-hibit the power conversion efficiency(PCE)much higher than those based on pure CsPbI3.xBrx.

ZHANG Meng、ZHANG Fanghui、SHI Kewang、ZHANG Wenxi、HUANG Jin、QIU Huimin

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School of Electrical and Control Engineering,Shaanxi University of Science&Technology,Xi'an 710021,China

School of Electronic Information and Artificial Intelligence,Shaanxi University of Science and Technology,Xi'an 710021,China

国家自然科学基金国家自然科学基金Education Depart-ment of Shaanxi Province Serves the Local Special Plan Project

619041001160419417JF006

2022

10.1007/s11801-022-1187-6

光电子快报(英文版)
天津理工大学

光电子快报(英文版)

EI
影响因子：0.641
ISSN：1673-1905
年,卷(期)：2022.18(6)
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