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Ecofriendly hydroxyalkyl cellulose Additives for Efficient and Stable MAPbI_(3)-Based Inverted Perovskite Solar Cells

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Energy & Environmental Materials 2023年第5期6卷 251-259页

作者： Xuefeng Zhu Rui Lin Hao Gu Huichao Hu Zheng Liu Guichuan Xing Yibing Wu Xinhua Ouyang College of Material Engineering Fujian Agriculture and Forestry UniversityFuzhou 350002China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoAvenida da UniversidadeTaipaMacao 999078China

Perovskite solar cells(PSCs)have been demonstrated to be one of the most promising technologies in the field of renewable ***,the presence of the defects in the perovskite films greatly limits the efficiency and the stability of the *** additive engineering is one of the most effective approaches to overcome this *** of the successful additives are extracted from the petroleum-based materials,while the research on the biomass-based additives is still lagging *** this paper,two ecofriendly hydroxyalkyl cellulose additives,i.e.,hydroxyethyl cellulose(HEC)and hydroxylpropyl cellulose(HPC),are investigated on the performance of the MAPbl_(3)-based inverted *** to the strong interaction between the hydroxyl groups of the cellulose and the divalent cations of the perovskite,these additives enhance the crystal grain orientation and significantly repair the defects of the perovskite *** as the additives,these two cellulose derivatives show a strong passivation ability,which significantly reduces the trap density and improves the optoelectronic feature of the *** with the average power conversion efficiency(PCE)of the control device(19.19%),an enhancement of~10%is achieved after the addition of *** optimized device(PCE=21.25%)with a long-term stability(10:80 h,PCE=20.93%)is achieved by the incorporation of the HEC additives into the precursor *** is the best performance among the PSCs with the cellulose additives up to *** research provides a novel choice to develop a cost-effective and renewable additive for the PSCs with high efficiency and excellent long-term stability.

关键词： additives hydroxyalkyl cellulose inverted perovskite solar cells MAPbl_(3)

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