Performance Enhancement of Flexible Perovskite Solar Cells Enabled by Ammonium Halide Passivation

Fan, Jingya; Yang, Yajie; Jiang, Ting; Zhang, Jingquan; Wu, Lili; Wang, Wenwu; Zeng, Guanggen; Li, Jianqin; Halim, Mohammad Abdul; Hao, Xia

doi:10.1021/acs.energyfuels.3c03679

Cited by 2 publications

(1 citation statement)

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“…For flexible substrate devices, the annealing temperature of the SnO 2 layer is 150 °C and the annealing time is 30 min. The preparation method of the perovskite layer is the same as our previous report . Then, the substrate was treated with UV–O 3 for 15 min before the perovskite spin-coating process.…”

Section: Methodsmentioning

confidence: 99%

Enhanced Performance of Flexible Perovskite Solar Cells Enabled by ATB Passivator

Yang,

Fan,

Jiang

et al. 2024

Energy Fuels

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The thermolabile polymer substrate of flexible perovskite solar cells (f-PSCs) enables defect formation during solution treatment and annealing. This phenomenon is unamiable to the device's efficiency and mechanical stability, which is the motivation of this work and drives the strategy regarding the multifunctional modification by introducing 7-amino-4-(trifluoromethyl)-2-benzopyrone (ATB) into the perovskite precursor solution. Results indicate that the ATB involvement contributes to the formation of high-quality perovskite films and passivates the defects in the perovskite film, extending the carrier lifetime and enabling a f-PSC with a power conversion efficiency (PCE) of 19.47%. The ATB participation also facilitates the bending stability of the flexible f-PSC device, where 89.1% of the initial PCE remains after 5000 bending cycles with a bending radius of 5 mm, compared to the 65.3% residual of the control device without ATB. Furthermore, the unencapsulated device exhibits an 82.8% remainder of the initial efficiency after 2100 h exposure at an ambient condition of 20 °C and 40 ± 5% relative humidity more excellent than the control (68.4%). Hopefully, this work presents a fresh strategy in enhancing the mechanical stability of flexible f-PSC device with a decent PCE.

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Section: Methodsmentioning

confidence: 99%