Ethylenediamine chlorides additive assisting formation of high-quality formamidinium-caesium perovskite film with low trap density for efficient solar cells | |
Hou, Jie2,3,4; Deng, Fei4; Wu, Qibing3; Yang, Lihui2; Wu, Jiaojiao4; Li, Xitao4; Zheng, Yan-Zhen4; Li, Nan4; Ding, Haiyang1; Tao, Xia4 | |
刊名 | JOURNAL OF POWER SOURCES
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2020-02-15 | |
卷号 | 449页码:8 |
关键词 | Perovskite solar cells Ethylenediamine chlorides Ion additive engineering Trap density |
ISSN号 | 0378-7753 |
DOI | 10.1016/j.jpowsour.2019.227484 |
通讯作者 | Zheng, Yan-Zhen(zhengyz@mail.buct.edu.cn) ; Tao, Xia(taoxia@yahoo.com) |
英文摘要 | Dual-cation formamidinium-caesium (FACs) perovskite shows good thermal stability, but a great number of trap states existing in the FACs perovskite film impair its photoelectric conversion efficiency and long-term stability. In this work, ethylenediamine chlorides (EDACl(2)), a new type Lewis base trap deactivator, is synthesized and then applied to the perovskite precursor solution to assist the formation of FACs perovskite film with less trap states. A series of photoelectric measurements reveal that the charge transport of FACs perovskite film, mediated by EDACl(2) additive, is promoted and the non-radiative recombination process is reduced as well. By optimizing the EDACl(2) additive amount and Br composition, the EDACl(2) -engineered perovskite solar cells (PSCs) with structures of ITO/SnO2/Cs(0.15)FA(0.85)PbI(2.7)Br(0.3)/Spiro-MeOTAD/Ag and ITO/SnO2/Cs(0.5)FA(0.85)PbI(2.7) Bro.3/carbon, achieve their respective champion efficiencies of 19.68% and 15.56%, along with negligible hysteresis. Particularly, the carbon-based FACs device with EDACl(2) exhibits good air-, thermal- and photostability. This work provides a facile and efficient ion additive engineering for fabrication of high-quality perovskite films and high-performance PSCs. |
资助项目 | National Natural Science Foundation of China[21676017] ; Opening Project of State Key Laboratory of Advanced Chemical Power Sources[SKL-ACPS-C-27] ; Open Fund of Shandong Key Laboratory of Corrosion Science[KLCS201914] ; Opening Project of State Key Laboratory of Organic-Inorganic Composites |
WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000510947000077 |
内容类型 | 期刊论文 |
源URL | [http://ir.qdio.ac.cn/handle/337002/165361] ![]() |
专题 | 中国科学院海洋研究所 |
通讯作者 | Zheng, Yan-Zhen; Tao, Xia |
作者单位 | 1.Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Shandong Key Lab Corros Sci, Beijing, Peoples R China 3.Guizhou Meiling Power Sources Co Ltd, State Key Lab Adv Chem Power Sources, Zunyi 563003, Guizhou, Peoples R China 4.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Hou, Jie,Deng, Fei,Wu, Qibing,et al. Ethylenediamine chlorides additive assisting formation of high-quality formamidinium-caesium perovskite film with low trap density for efficient solar cells[J]. JOURNAL OF POWER SOURCES,2020,449:8. |
APA | Hou, Jie.,Deng, Fei.,Wu, Qibing.,Yang, Lihui.,Wu, Jiaojiao.,...&Tao, Xia.(2020).Ethylenediamine chlorides additive assisting formation of high-quality formamidinium-caesium perovskite film with low trap density for efficient solar cells.JOURNAL OF POWER SOURCES,449,8. |
MLA | Hou, Jie,et al."Ethylenediamine chlorides additive assisting formation of high-quality formamidinium-caesium perovskite film with low trap density for efficient solar cells".JOURNAL OF POWER SOURCES 449(2020):8. |
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