Surface Ligand Management Aided by a Secondary Amine Enables Increased Synthesis Yield of CsPbI(3)Perovskite Quantum Dots and High Photovoltaic Performance
文献类型：期刊论文
| 作者 | Wang, Y; Yuan, JY; Zhang, XL; Ling, XF; Larson, BW; Zhao, Q; Yang, YG; Shi, Y; Luther, JM; Ma, WL |
| 刊名 | ADVANCED MATERIALS
 |
| 出版日期 | 2020 |
| 卷号 | 32期号:32页码:- |
| ISSN号 | 0935-9648 |
| 关键词 | SOLAR-CELLS ALPHA-CSPBI3 PEROVSKITE HALIDE PEROVSKITES EFFICIENCY STABILITY NANOCRYSTALS EXCHANGE |
| DOI | 10.1002/adma.202000449 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Lead-halide perovskite quantum dots (PQDs) or more broadly, nanocrystals possess advantageous features for solution-processed photovoltaic devices. The nanocrystal surface ligands play a crucial role in the transport of photogenerated carriers and ultimately affect the overall performance of PQD solar cells. Significantly improved CsPbI(3)PQD synthetic yield and solar-cell performance through surface ligand management are demonstrated. The treatment of a secondary amine, di-n-propylamine (DPA), provides a mild and efficient approach to control the surface ligand density of PQDs, which has an apparently different working mechanism compared to previously reported surface treatments. Using an optimal DPA concentration, the treatment can simultaneously remove both long-chain insulating surface ligands of oleic acid and oleylamine, even for unpurified PQDs with high ligand density. As a result, the electrical coupling between PQDs is enhanced, leading to improved charge transport, reduced carrier recombination, and a high power conversion efficiency approaching 15% for CsPbI3-PQD-based solar cells. In addition, the production yield of CsPbI(3)PQDs can be increased by a factor of 8. These results highlight the importance of developing new ligand-management strategies, specifically for emerging PQDs to achieve scalable and high-performance perovskite-based optoelectronic devices. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/33178]  |
| 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.Natl Renewable Energy Lab, Chem & Nanosci Dept, Golden, CO 80401 USA 2.Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab CarbonBased Funct Mat & Devices, Joint Int Res Lab Carbon Based Funct Mat & Device, 199 Ren Ai Rd,Suzhou Ind Pk, Suzhou 215123, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Y,Yuan, JY,Zhang, XL,et al. Surface Ligand Management Aided by a Secondary Amine Enables Increased Synthesis Yield of CsPbI(3)Perovskite Quantum Dots and High Photovoltaic Performance[J]. ADVANCED MATERIALS,2020,32(32):-. |
| APA | Wang, Y.,Yuan, JY.,Zhang, XL.,Ling, XF.,Larson, BW.,...&Ma, WL.(2020).Surface Ligand Management Aided by a Secondary Amine Enables Increased Synthesis Yield of CsPbI(3)Perovskite Quantum Dots and High Photovoltaic Performance.ADVANCED MATERIALS,32(32),-. |
| MLA | Wang, Y,et al."Surface Ligand Management Aided by a Secondary Amine Enables Increased Synthesis Yield of CsPbI(3)Perovskite Quantum Dots and High Photovoltaic Performance".ADVANCED MATERIALS 32.32(2020):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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