Passivating Crystal Boundaries with Potassium-Rich Phase in Organic Halide Perovskite
文献类型：期刊论文
| 作者 | Kuai, L; Wang, YS; Zhang, ZX; Yang, YG; Qin, YS; Wu, T; Li, YJ; Li, YY; Song, T; Gao, XY |
| 刊名 | SOLAR RRL
 |
| 出版日期 | 2019 |
| 卷号 | 3期号:5页码:- |
| 关键词 | SOLAR-CELLS OPTOELECTRONIC PROPERTIES PERFORMANCE HYSTERESIS RUBIDIUM CATIONS FORMAMIDINIUM EFFICIENCY TOLERANCE STABILITY |
| ISSN号 | 2367-198X |
| DOI | 10.1002/solr.201900053 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Recently, considerable researches have reported that the incorporation of potassium cation (K+) in lead halide perovskites obviously improves the performance of perovskite solar cells. The recent finding indicates that the interstitial occupancy position of K+ in perovskite lattice can increase ion-migration barrier, which dramatically suppresses the hysteresis of the device. However, the enhancement of photoluminescence (PL) as well as bandgap variation cannot be interpreted by K+ interstitial state in perovskite. Considering this discrepancy, it has been found out that potassium-rich phase grows in three dimensional (3D) perovskite crystal grain boundary through both experiments and theoretical simulations, which can efficiently passivate the grain boundaries on the 3D crystal surface and decrease trap states. Meanwhile, the dielectric confinement effect between potassium-rich phase and 3D perovskite crystal, contributing to improvement of radiative recombination in perovskite absorber, can further support the enhancement and red-shift of photoluminescence (PL) spectrum. Therefore, a power conversion efficiency of 20.4% has been achieved in K+ doped halide perovskite solar cell, and still maintains 90% initial efficiency after stored in 30% humidity at room temperature for 1000h. These findings offer a new path for the structural manipulation by incorporating multi cations in perovskite materials. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32155]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, 199 Renai Rd, Suzhou 215123, Jiangsu, Peoples R China; 2.Chinese Acad Sci, SSRF, Shanghai Inst Appl Phys, 239 Zhangheng Rd, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kuai, L,Wang, YS,Zhang, ZX,et al. Passivating Crystal Boundaries with Potassium-Rich Phase in Organic Halide Perovskite[J]. SOLAR RRL,2019,3(5):-. |
| APA | Kuai, L.,Wang, YS.,Zhang, ZX.,Yang, YG.,Qin, YS.,...&Sun, BQ.(2019).Passivating Crystal Boundaries with Potassium-Rich Phase in Organic Halide Perovskite.SOLAR RRL,3(5),-. |
| MLA | Kuai, L,et al."Passivating Crystal Boundaries with Potassium-Rich Phase in Organic Halide Perovskite".SOLAR RRL 3.5(2019):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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