Stabilizing black-phase formamidinium perovskite formation at room temperature and high humidity

被引：826

作者：

Hui, Wei ^{[1
,2
]}

Chao, Lingfeng ^{[3
,4
]}

Lu, Hui ^{[1
,2
]}

Xia, Fei ^{[1
,2
]}

Wei, Qi ^{[5
]}

Su, Zhenhuang ^{[6
]}

Niu, Tingting ^{[3
,4
]}

Tao, Lei ^{[1
,2
]}

Du, Bin ^{[1
,2
]}

Li, Deli ^{[3
,4
]}

Wang, Yue ^{[3
,4
]}

Dong, He ^{[3
,4
]}

Zuo, Shouwei ^{[7
]}

Li, Bixin ^{[8
]}

Shi, Wei ^{[1
,2
]}

Ran, Xueqin ^{[1
,2
]}

Li, Ping ^{[1
,2
]}

Zhang, Hui ^{[1
,2
]}

Wu, Zhongbin ^{[3
,4
]}

Ran, Chenxin ^{[3
,4
]}

Song, Lin ^{[3
,4
]}

Xing, Guichuan ^{[5
]}

Gao, Xingyu ^{[6
]}

Zhang, Jing ^{[7
]}

Xia, Yingdong ^{[1
,2
]}

Chen, Yonghua ^{[1
,2
]}

Huang, Wei ^{[1
,2
,3
,4
,9
,10
]}

机构：

[1] Nanjing Tech Univ, Key Lab Flexible Elect KLoFE, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

[2] Nanjing Tech Univ, Inst Adv Mat IAM, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

[3] Northwestern Polytech Univ, Frontiers Sci Ctr Flexible Elect, Xian Inst Flexible Elect IFE, 127 West Youyi Rd, Xian 710072, Peoples R China

[4] Northwestern Polytech Univ, Xian Inst Biomed Mat & Engn, 127 West Youyi Rd, Xian 710072, Peoples R China

[5] Univ Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Ave Univ, Taipa 999078, Macau, Peoples R China

[6] Chinese Acad Sci, Shanghai Adv Res Inst, Zhangjiang Lab, Shanghai Synchrotron Radiat Facil SSRF, 239 Zhangheng Rd, Shanghai 201204, Peoples R China

[7] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

[8] Hunan First Normal Univ, Lab Coll Phys, Dept Educ Sci, Changsha 410205, Hunan, Peoples R China

[9] Nanjing Univ Posts & Telecommun, Key Lab Organ Elect & Informat Displays, Nanjing 210023, Peoples R China

[10] Nanjing Univ Posts & Telecommun, Inst Adv Mat, Nanjing 210023, Peoples R China

来源：

SCIENCE | 2021年 / 371卷 / 6536期

基金：

国家自然科学基金国际合作与交流项目;

关键词：

D O I：

10.1126/science.abf7652

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

070301 [无机化学]; 070403 [天体物理学]; 070507 [自然资源与国土空间规划学]; 090105 [作物生产系统与生态工程];

摘要：

The stabilization of black-phase formamidinium lead iodide (alpha-FAPbI(3)) perovskite under various environmental conditions is considered necessary for solar cells. However, challenges remain regarding the temperature sensitivity of alpha-FAPbI(3) and the requirements for strict humidity control in its processing. Here we report the synthesis of stable alpha-FAPbI(3), regardless of humidity and temperature, based on a vertically aligned lead iodide thin film grown from an ionic liquid, methylamine formate. The vertically grown structure has numerous nanometer-scale ion channels that facilitate the permeation of formamidinium iodide into the lead iodide thin films for fast and robust transformation to alpha-FAPbI(3). A solar cell with a power-conversion efficiency of 24.1% was achieved. The unencapsulated cells retain 80 and 90% of their initial efficiencies for 500 hours at 85 degrees C and continuous light stress, respectively.

引用

页码：1359 / +

页数：30

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