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DOI | 10.1126/science.aau5701 |
A Eu3+-Eu2+ ion redox shuttle imparts operational durability to Pb-I perovskite solar cells | |
Wang, Ligang1; Zhou, Huanping1; Hu, Junnan1; Huang, Bolong2; Sun, Mingzi2; Dong, Bowei1; Zheng, Guanghaojie1; Huang, Yuan1; Chen, Yihua1; Li, Liang1; Xu, Ziqi1; Li, Nengxu1; Liu, Zheng1; Chen, Qi3; Sun, Ling-Dong1; Yan, Chun-Hua1 | |
2019-01-18 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 363期号:6424页码:265-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The components with soft nature in the metal halide perovskite absorber usually generate lead (Pb)degrees and iodine (I)degrees defects during device fabrication and operation. These defects serve as not only recombination centers to deteriorate device efficiency but also degradation initiators to hamper device lifetimes. We show that the europium ion pair Eu3+-Eu2+ acts as the "redox shuttle" that selectively oxidized Pb degrees and reduced I degrees defects simultaneously in a cyclical transition. The resultant device achieves a power conversion efficiency (PCE) of 21.52% (certified 20.52%) with substantially improved long-term durability. The devices retained 92% and 89% of the peak PCE under 1-sun continuous illumination or heating at 850 degrees C for 1500 hours and 91% of the original stable PCE after maximum power point tracking for 500 hours, respectively. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456140700033 |
WOS关键词 | GENERALIZED GRADIENT APPROXIMATION ; INDUCED DEGRADATION ; THERMAL-STABILITY ; HIGH-PERFORMANCE ; CATIONS ; GROWTH ; STATES ; LAYERS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/200556 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat,Beij, PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Che, Beijing Natl Lab Mol Sci,Key Lab Phys & Chem Nano, Beijing 100871, Peoples R China; 2.Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hum, Kowloon, Hong Kong, Peoples R China; 3.Beijing Inst Technol, Dept Mat Sci & Engn, Beijing 100081, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Ligang,Zhou, Huanping,Hu, Junnan,et al. A Eu3+-Eu2+ ion redox shuttle imparts operational durability to Pb-I perovskite solar cells[J]. SCIENCE,2019,363(6424):265-+. |
APA | Wang, Ligang.,Zhou, Huanping.,Hu, Junnan.,Huang, Bolong.,Sun, Mingzi.,...&Yan, Chun-Hua.(2019).A Eu3+-Eu2+ ion redox shuttle imparts operational durability to Pb-I perovskite solar cells.SCIENCE,363(6424),265-+. |
MLA | Wang, Ligang,et al."A Eu3+-Eu2+ ion redox shuttle imparts operational durability to Pb-I perovskite solar cells".SCIENCE 363.6424(2019):265-+. |
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