Flexible solar cells based on foldable silicon wafers with blunted edges

被引：138

作者：

Liu, Wenzhu ^{[1
,2
]}

Liu, Yujing ^{[3
]}

Yang, Ziqiang ^{[4
]}

Xu, Changqing ^{[5
]}

Li, Xiaodong ^{[1
,2
]}

Huang, Shenglei ^{[1
,6
]}

Shi, Jianhua ^{[1
,7
]}

Du, Junling ^{[1
,7
]}

Han, Anjun ^{[1
,7
]}

Yang, Yuhao ^{[1
]}

Xu, Guoning ^{[8
]}

Yu, Jian ^{[9
]}

Ling, Jiajia ^{[10
]}

Peng, Jun ^{[11
]}

Yu, Liping ^{[12
]}

Ding, Bin ^{[12
]}

Gao, Yuan ^{[12
]}

Jiang, Kai ^{[1
,2
]}

Li, Zhenfei ^{[1
]}

Yang, Yanchu ^{[8
]}

Li, Zhaojie ^{[8
]}

Lan, Shihu ^{[7
]}

Fu, Haoxin ^{[7
]}

Fan, Bin ^{[7
]}

Fu, Yanyan ^{[13
]}

He, Wei ^{[14
]}

Li, Fengrong ^{[14
]}

Song, Xin ^{[15
]}

Zhou, Yinuo ^{[1
]}

Shi, Qiang ^{[1
]}

Wang, Guangyuan ^{[1
]}

Guo, Lan ^{[1
,6
,16
]}

Kang, Jingxuan ^{[16
]}

Yang, Xinbo ^{[17
]}

Li, Dongdong ^{[18
]}

Wang, Zhechao ^{[19
]}

Li, Jie ^{[19
]}

Thoroddsen, Sigurdur ^{[4
]}

Cai, Rong ^{[8
]}

Wei, Fuhai ^{[19
]}

Xing, Guoqiang ^{[7
]}

Xie, Yi ^{[7
]}

Liu, Xiaochun ^{[3
]}

Zhang, Liping ^{[1
,2
,7
]}

Meng, Fanying ^{[1
,7
]}

Di, Zengfeng ^{[20
]}

Liu, Zhengxin ^{[1
,7
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Res Ctr New Energy Technol, Shanghai, Peoples R China

[2] Univ Chinese Acad Sci, Beijing, Peoples R China

[3] Changsha Univ Sci & Technol, Inst Met, Coll Mat Sci & Engn, Changsha, Peoples R China

[4] King Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Thuwal, Saudi Arabia

[5] King Abdullah Univ Sci & Technol, Div Comp Elect & Math Sci & Engn, Thuwal, Saudi Arabia

[6] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China

[7] Tongwei Solar Co, Chengdu, Peoples R China

[8] Chinese Acad Sci, Aerosp Informat Res Inst, Beijing, Peoples R China

[9] Southwest Petr Univ, Inst Photovolta, Chengdu, Peoples R China

[10] UISEE Technol, Shanghai, Peoples R China

[11] Soochow Univ, Inst Funct Nano & Soft Mat, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou, Peoples R China

[12] Beihang Univ, Inst Solid Mech, Beijing, Peoples R China

[13] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai, Peoples R China

[14] Chinese Acad Sci, Key Lab Wireless Sensor Networks & Commun CAS, Shanghai Inst Microsyst & Informat Technol, Shanghai, Peoples R China

[15] Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolta Sci & En, Sch Mat Sci & Engn, Changzhou, Peoples R China

[16] Leibniz Inst, Paul Drude Inst Festkorperelekt, Berlin, Germany

[17] Soochow Univ, Soochow Inst Energy & Mat Innovat, Coll Energy, Suzhou, Peoples R China

[18] Chinese Acad Sci, Shanghai Adv Res Inst, Interdisciplinary Res Ctr, Shanghai, Peoples R China

[19] Polar Res Inst China, Shanghai, Peoples R China

[20] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai, Peoples R China

来源：

NATURE | 2023年 / 617卷 / 7962期

基金：

中国国家自然科学基金;

关键词：

EFFICIENCY; PHOTOVOLTAICS;

D O I：

10.1038/s41586-023-05921-z

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：

07 ; 0710 ; 09 ;

摘要：

Flexible solar cells have a lot of market potential for application in photovoltaics integrated into buildings and wearable electronics because they are lightweight, shockproof and self-powered. Silicon solar cells have been successfully used in large power plants. However, despite the efforts made for more than 50 years, there has been no notable progress in the development of flexible silicon solar cells because of their rigidity1-4. Here we provide a strategy for fabricating large-scale, foldable silicon wafers and manufacturing flexible solar cells. A textured crystalline silicon wafer always starts to crack at the sharp channels between surface pyramids in the marginal region of the wafer. This fact enabled us to improve the flexibility of silicon wafers by blunting the pyramidal structure in the marginal regions. This edge-blunting technique enables commercial production of large-scale (>240 cm(2)), high-effliciency (>24%) silicon solar cells that can be rolled similarly to a sheet of paper. The cells retain 100% of their power conversion efficiency after 1,000 side-to-side bending cycles. After being assembled into large (>10,000 cm(2)) flexible modules, these cells retain 99.62% of their power after thermal cycling between -70 degrees C and 85 degrees C for 120 h. Furthermore, they retain 96.03% of their power after 20 min of exposure to air flow when attached to a soft gasbag, which models wind blowing during a violent storm.

引用

页码：717 / +

页数：20

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