Journal
SMALL STRUCTURES
Volume -, Issue -, Pages -Publisher
WILEY
DOI: 10.1002/sstr.202200338
Keywords
commercialization; functional layers; inverted flexible perovskites; perovskites; solar cells
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Perovskite solar cells (PSCs) are highly promising due to their high efficiency, low cost, and ease of fabrication. Flexible perovskite solar cells (FPSCs), specifically, are lightweight and bendable, making them suitable for wearable and portable electronics, space energy systems, and more. Inverted p-i-n FPSCs offer operational stability, reduced hysteresis effect, low-temperature fabrication, and potential for tandem devices. With PCEs reaching 21.76% and 24.7% for single-junction and tandem-inverted FPSCs respectively, commercial applications are highly anticipated. This review discusses the development of functional layers and technologies for accelerating the commercialization of inverted FPSCs, providing perspectives on their future development and commercialization.
Perovskite solar cells (PSCs) are now one of the most promising solar cells due to advantages such as high-power conversion efficiency (PCE), low cost, and ease of fabrication. Among PSCs, flexible perovskite solar cells (FPSCs) are lightweight and bendable, making them easier to transport and install than rigid PSCs, and hence can be used in wearable and portable electronics, space energy systems, multifunctional integrated buildings, unmanned systems, and other applications. Compared with regular n-i-p FPSCs, inverted p-i-n FPSCs possess advantages of reliable operational stability, reduced hysteresis effect, low-temperature fabrication process, and strong potential for tandem devices. At present, the PCEs of single-junction and tandem-inverted FPSCs have reached 21.76% and 24.7%, respectively, indicating promising commercial applications. In this review, first, the developments of device functional layers including flexible substrates, flexible conductive electrodes, charge transport layers, and perovskite active layers in inverted FPSCs are elucidated and discussed thoroughly. Then, the technologies for accelerating commercialization of inverted FPSCs are summarized in detail. Finally, perspectives on the development and commercialization of inverted FPSCs are provided.
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