Journal
POLYMERS
Volume 13, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/polym13010042
Keywords
bathocuproine; methylammonium lead iodide; electron-transporting interfacial layer; perovskite solar cells
Categories
Funding
- Ministry of Science and Technology of Taiwan [MOST 109-2221-E-005-070]
- National Chung Hsing University
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This study demonstrated that by using different materials as hole-blocking and electron-transporting interfacial layers, the photovoltaic properties and storage stabilities of inverted perovskite solar cells can be improved. Incorporating PMMA and PVP can enhance the stability and photovoltaic performance of PVSCs.
In this study, we improved the photovoltaic (PV) properties and storage stabilities of inverted perovskite solar cells (PVSCs) based on methylammonium lead iodide (MAPbI(3)) by employing bathocuproine (BCP)/poly(methyl methacrylate) (PMMA) and BCP/polyvinylpyrrolidone (PVP) as hole-blocking and electron-transporting interfacial layers. The architecture of the PVSCs was indium tin oxide/poly(3,4-ethylenedioxythiophene):polystyrenesulfonate/MAPbI(3)/[6,6]-phenyl-C-61-butyric acid methyl ester/BCP based interfacial layer/Ag. The presence of PMMA and PVP affected the morphological stability of the BCP and MAPbI(3) layers. The storage-stability of the BCP/PMMA-based PVSCs was enhanced significantly relative to that of the corresponding unmodified BCP-based PVSC. Moreover, the PV performance of the BCP/PVP-based PVSCs was enhanced when compared with that of the unmodified BCP-based PVSC. Thus, incorporating hydrophobic polymers into BCP-based hole-blocking/electron-transporting interfacial layers can improve the PV performance and storage stability of PVSCs.
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