IOCAS-IR
Ethylenediamine chlorides additive assisting formation of high-quality formamidinium-caesium perovskite film with low trap density for efficient solar cells
Hou, Jie1,2,3; Deng, Fei1; Wu, Qibing2; Yang, Lihui3; Wu, Jiaojiao1; Li, Xitao1; Zheng, Yan-Zhen1; Li, Nan1; Ding, Haiyang4; Tao, Xia1
2020-02-15
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
Volume449Pages:8
Corresponding AuthorZheng, Yan-Zhen(zhengyz@mail.buct.edu.cn) ; Tao, Xia(taoxia@yahoo.com)
AbstractDual-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.
KeywordPerovskite solar cells Ethylenediamine chlorides Ion additive engineering Trap density
DOI10.1016/j.jpowsour.2019.227484
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000510947000077
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/165362
Collection中国科学院海洋研究所
Corresponding AuthorZheng, Yan-Zhen; Tao, Xia
Affiliation1.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
2.Guizhou Meiling Power Sources Co Ltd, State Key Lab Adv Chem Power Sources, Zunyi 563003, Guizhou, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Shandong Key Lab Corros Sci, Beijing, Peoples R China
4.Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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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