Oriented Perovskite Crystal towards Efficient Charge Transport in FASnI3 Perovskite Solar Cells

被引：30

作者：

Gu, Wenwen ^{[1
,2
]}

Xu, Xin ^{[1
,2
]}

Chen, Junwen ^{[1
,2
]}

Ma, Ben ^{[1
,2
]}

Qin, Minchao ^{[3
]}

Zhu, Wenjing ^{[1
,2
]}

Qian, Jie ^{[1
,2
]}

Qin, Zhaotong ^{[3
]}

Shen, Wei ^{[1
,2
]}

Lu, Yao ^{[1
,2
]}

Zhang, Wenzhu ^{[1
,2
]}

Chen, Shufen ^{[1
,2
,4
]}

Lu, Xinhui ^{[3
]}

Huang, Wei ^{[1
,2
,4
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Inst Adv Mat IAM, Key Lab Organ Elect & Informat Displays, 9 Wenyuan Rd, Nanjing 210023, Peoples R China

[2] Nanjing Univ Posts & Telecommun, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Inst Adv Mat IAM, Jiangsu Key Lab Biosensors, 9 Wenyuan Rd, Nanjing 210023, Peoples R China

[3] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong 999077, Peoples R China

[4] Northwestern Polytech Univ, Frontiers Sci Ctr Flexible Elect, Xian Inst Flexible Elect IFE, Xian Inst Biomed Mat & Engn, 127 West Youyi Rd, Xian 710072, Peoples R China

来源：

SOLAR RRL | 2020年 / 4卷 / 10期

基金：

中国国家自然科学基金;

关键词：

charge transport; FASnI(3); lead free; orientations; perovskite solar cells; TIN-BASED PEROVSKITE; FREE HALIDE PEROVSKITE; OPTICAL-PROPERTIES; HIGH-PERFORMANCE; LEAD; IODIDE; FORMAMIDINIUM; FABRICATION; CATIONS; ABSORBERS;

D O I：

10.1002/solr.202000153

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Despite a higher power conversion efficiency (PCE) than other lead-free perovskite solar cells (PSCs) due to intrinsically excellent optoelectronic properties and suitable bandgaps of tin (Sn) perovskites, Sn-based PSCs still suffer from issues of stability and efficiency for practical applications. Herein, a novel strategy of tuning perovskite crystal orientation toward approximate to 45 degrees with respect to the substrate by doping 2,3-diaminopropionic acid monohydrochloride (2,3-DAPAC) into formamidinium tin iodide (FASnI(3)) is proposed, which facilitates charge transport in the perovskite film and consequent device performances. In addition, the incorporation of 2,3-DAPAC into FASnI(3)enables dense and smooth high-quality perovskite films with less Sn vacancies. Applications of the 2,3-DAPAC-treated FASnI(3)films into PSCs acquire a champion PCE of 7.23%, showing 37.2% enhancement compared with 5.27% of the control device. Moreover, the storage stabilities of both perovskite films and PSCs are significantly prolonged with improved film quality.

引用

页数：10

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