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DOI | 10.1126/science.aay7044 |
Efficient, stable solar cells by using inherent bandgap of alpha-phase formamidinium lead iodide | |
Min, Hanul; Kim, Maengsuk; Lee, Seung-Un; Kim, Hyeonwoo; Kim, Gwisu; Choi, Keunsu; Lee, Jun Hee; Seok, Sang Il | |
2019-11-08 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 366期号:6466页码:749-+ |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | In general, mixed cations and anions containing formamidinium (FA), methylammonium (MA), caesium, iodine, and bromine ions are used to stabilize the black alpha-phase of the FA-based lead triiodide (FAPbI(3)) in perovskite solar cells. However, additives such as MA, caesium, and bromine widen its bandgap and reduce the thermal stability. We stabilized the alpha-FAPbI(3) phase by doping with methylenediammonium dichloride (MDACl(2)) and achieved a certified short-circuit current density of between 26.1 and 26.7 milliamperes per square centimeter. With certified power conversion efficiencies (PCEs) of 23.7%, more than 90% of the initial efficiency was maintained after 600 hours of operation with maximum power point tracking under full sunlight illumination in ambient conditions including ultraviolet light. Unencapsulated devices retained more than 90% of their initial PCE even after annealing for 20 hours at 150 degrees C in air and exhibited superior thermal and humidity stability over a control device in which FAPbI(3) was stabilized by MAPbBr(3). |
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:000496500400052 |
WOS关键词 | INITIO MOLECULAR-DYNAMICS ; TOTAL-ENERGY CALCULATIONS ; HIGHLY EFFICIENT ; PEROVSKITE ; 1ST-PRINCIPLES ; STABILIZATION ; INTERFACE |
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/226187 |
专题 | 环境与发展全球科技态势 |
作者单位 | Ulsan Natl Inst Sci & Technol, Sch Energy & Chem Engn, Dept Energy Engn, 50 UNIST Gil, Ulsan 44919, South Korea |
推荐引用方式 GB/T 7714 | Min, Hanul,Kim, Maengsuk,Lee, Seung-Un,et al. Efficient, stable solar cells by using inherent bandgap of alpha-phase formamidinium lead iodide[J]. SCIENCE,2019,366(6466):749-+. |
APA | Min, Hanul.,Kim, Maengsuk.,Lee, Seung-Un.,Kim, Hyeonwoo.,Kim, Gwisu.,...&Seok, Sang Il.(2019).Efficient, stable solar cells by using inherent bandgap of alpha-phase formamidinium lead iodide.SCIENCE,366(6466),749-+. |
MLA | Min, Hanul,et al."Efficient, stable solar cells by using inherent bandgap of alpha-phase formamidinium lead iodide".SCIENCE 366.6466(2019):749-+. |
条目包含的文件 | 条目无相关文件。 |
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