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- W2933810914 abstract "Poly(3,4-ethenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) and graphene oxide (GO) as well as their hybrids have been widely used to prepare hole-transport layer (HTL) for inverted planar perovskite solar cells (PeSCs). However, their acidic nature is detrimental to the stability of PeSC. In this study, we report a simple and general strategy to prepare non-corrosive HTL by treating GO and PEDOT:PSS with ammonia or ammonium (i.e., (NH 4 ) 2 HPO 4 ), respectively. The PeSC based on ammonia-treated GO (a-GO) yields a power conversion efficiency (PCE) over 14%, remarkably outperforming those with pristine GO (∼12%) or PEDOT:PSS (∼13%). Similar improvement is also observed for the devices with ammonia or ammonium-treated PEDOT:PSS. The mechanism behind such improvement is thoroughly studied, demonstrating the significance of ammonia treatment on the HTL performance. More importantly, the devices based on ammonia-treated HTL exhibit significantly improved stability, as compared to those based on pristine PEDOT:PSS and GO. • We have prepared non-corrosive HTLs by simply treating GO and PEDOT:PSS with ammonia or ammonium phosphate, respectively. • Using ammonia-treated GO as HTL results in the perovskite film with better quality and enhanced interfacial hole transport. • Similar improvements are also observed when using ammonia or ammonium phosphate treated PEDOT:PSS as HTL. • Devices with the non-corrosive HTLs exhibit significantly improved stability." @default.
- W2933810914 created "2019-04-11" @default.
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- W2933810914 date "2019-07-01" @default.
- W2933810914 modified "2023-10-18" @default.
- W2933810914 title "Ammonia-treated graphene oxide and PEDOT:PSS as hole transport layer for high-performance perovskite solar cells with enhanced stability" @default.
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- W2933810914 doi "https://doi.org/10.1016/j.orgel.2019.03.048" @default.
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