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A Selective Targeting Anchor Strategy Affords Efficient and Stable Ideal-Bandgap Perovskite Solar Cells

文献类型：期刊论文

作者Liang, Zheng5,6; Xu, Huifen5,6; Zhang, Yong3,4; Liu, Guozhen6; Chu, Shenglong1,2,5; Tao, Yuli5,6; Xu, Xiaoxiao5,6; Xu, Shendong5,6; Zhang, Liying5,6; Chen, Xiaojing6
刊名ADVANCED MATERIALS
出版日期2022-04-03
关键词ideal bandgap mixed lead-tin perovskites open-circuit voltage loss perovskite solar cells trap passivation
ISSN号0935-9648
DOI10.1002/adma.202110241
通讯作者Xiao, Zhengguo(zhengguo@ustc.edu.cn) ; Pan, Xu(xpan@rntek.cas.cn) ; Ye, Jiajiu(yejj@issp.ac.cn)
英文摘要Mixed lead-tin perovskite solar cells (LTPSCs) with an ideal bandgap are demonstrated as a promising candidate to reach higher power conversion efficiency (PCE) than their Pb-counterparts. Herein, a Br-free mixed lead-tin perovskite material, FA(0.8)MA(0.2)Pb(0.8)Sn(0.2)I(3), with a bandgap of 1.33 eV, as a perovskite absorber, is selected. Through density functional theory calculations and optoelectronic techniques, it is demonstrated that both Pb- and Sn-related A-site vacancies are pushed into deeper energetic depth, causing severe nonradiative recombination. Hence, a selective targeting anchor strategy that employs phenethylammonium iodide and ethylenediamine diiodide as co-modifiers to selectively anchor with Pb- and Sn-related active sites and passivate bimetallic traps, respectively, is established. Furthermore, the selectivity of the molecular oriented anchor passivation is demonstrated through energetic depth specificity of Pb- and Sn-related traps. As a result, a substantially enhanced open-circuit voltage (V-OC) from 0.79 to 0.90 V for the LTPSCs is achieved, yielding a champion PCE of 22.51%, which is the highest PCE among the reported ideal-bandgap PSCs. The V-OC loss is reduced to 0.43 V.
WOS关键词DEFECT PASSIVATION ; HALIDE PEROVSKITES ; SN ; PERFORMANCE ; STABILITY ; PHASE ; HETEROJUNCTION ; DURABILITY ; RELAXATION ; OXIDATION
资助项目National Key R&D Program of China[2021YFB3800102] ; Science Funds of Distinguished Young Scholars of Anhui Province[2108085J34]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000777541700001
出版者WILEY-V C H VERLAG GMBH
资助机构National Key R&D Program of China ; Science Funds of Distinguished Young Scholars of Anhui Province
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/128263]  
专题中国科学院合肥物质科学研究院
通讯作者Xiao, Zhengguo; Pan, Xu; Ye, Jiajiu
作者单位1.Dept Phys, Hefei 230026, Anhui, Peoples R China
2.Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Shenzhen Engn Res & Dev Ctr Flexible Solar Cells, Shenzhen 518055, Peoples R China
5.Univ Sci & Technol China, Hefei 230026, Peoples R China
6.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Liang, Zheng,Xu, Huifen,Zhang, Yong,et al. A Selective Targeting Anchor Strategy Affords Efficient and Stable Ideal-Bandgap Perovskite Solar Cells[J]. ADVANCED MATERIALS,2022.
APA Liang, Zheng.,Xu, Huifen.,Zhang, Yong.,Liu, Guozhen.,Chu, Shenglong.,...&Ye, Jiajiu.(2022).A Selective Targeting Anchor Strategy Affords Efficient and Stable Ideal-Bandgap Perovskite Solar Cells.ADVANCED MATERIALS.
MLA Liang, Zheng,et al."A Selective Targeting Anchor Strategy Affords Efficient and Stable Ideal-Bandgap Perovskite Solar Cells".ADVANCED MATERIALS (2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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