| Ligand-assisted cation-exchange engineering for high-efficiency colloidal Cs(1-x)FA(x)PbI(3) quantum dot solar cells with reduced phase segregation | |
| Hao, Mengmeng1; Bai, Yang1; Zeiske, Stefan2; Ren, Long3; Liu, Junxian4,5; Yuan, Yongbo6; Zarrabi, Nasim2; Cheng, Ningyan3; Ghasemi, Mehri1; Chen, Peng1; Lyu, Miaoqiang1; He, Dongxu1; Yun, Jung-Ho1; Du, Yi3; Wang, Yun4,5; Ding, Shanshan1; Armin, Ardalan2; Meredith, Paul2; Liu, Gang7,8; Cheng, Hui-Ming7,9,10; Wang, Lianzhou1 | |
| Corresponding Author | Bai, Yang(y.bai@uq.edu.au) ; Wang, Lianzhou(l.wang@uq.edu.au) |
| 2020 | |
| Source Publication | NATURE ENERGY
 |
| ISSN | 2058-7546 |
| Volume | 5Issue:1Pages:79-88 |
| Abstract | Mixed-cation perovskite quantum dot solar cells possess decent phase stability but considerably low efficiency. Here Hao et al. show that ligands are key to the formation of quantum dots with lower defect density and demonstrate devices that are more stable and efficient than their bulk counterparts. The mixed caesium and formamidinium lead triiodide perovskite system (Cs(1-x)FA(x)PbI(3)) in the form of quantum dots (QDs) offers a pathway towards stable perovskite-based photovoltaics and optoelectronics. However, it remains challenging to synthesize such multinary QDs with desirable properties for high-performance QD solar cells (QDSCs). Here we report an effective oleic acid (OA) ligand-assisted cation-exchange strategy that allows controllable synthesis of Cs(1-x)FA(x)PbI(3) QDs across the whole composition range (x = 0-1), which is inaccessible in large-grain polycrystalline thin films. In an OA-rich environment, the cross-exchange of cations is facilitated, enabling rapid formation of Cs(1-x)FA(x)PbI(3) QDs with reduced defect density. The hero Cs(0.5)FA(0.5)PbI(3) QDSC achieves a certified record power conversion efficiency (PCE) of 16.6% with negligible hysteresis. We further demonstrate that the QD devices exhibit substantially enhanced photostability compared with their thin-film counterparts because of suppressed phase segregation, and they retain 94% of the original PCE under continuous 1-sun illumination for 600 h. |
| Funding Organization | Australian Research Council Discovery Projects (ARC DPs) ; UQ Development Fellowship ; ARC DECRA Fellowship ; ARC ; Australian Commonwealth Government ; Pawsey Supercomputing Centre in Perth ; Australian Government ; Government of Western Australia ; Ser Cymru II (Welsh European Funding Office) Program 'Sustainable Advanced Materials' ; Ser Cymru II (European Regional Development Fund) Program 'Sustainable Advanced Materials' ; National Natural Science Foundation of China |
| DOI | 10.1038/s41560-019-0535-7 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Australian Research Council Discovery Projects (ARC DPs) ; UQ Development Fellowship ; ARC DECRA Fellowship[DE190101351] ; ARC[LE0882813] ; ARC[LE120100104] ; ARC[DP160102627] ; ARC[DP170101467] ; ARC[FT180100585] ; Australian Commonwealth Government ; Pawsey Supercomputing Centre in Perth ; Australian Government ; Government of Western Australia ; Ser Cymru II (Welsh European Funding Office) Program 'Sustainable Advanced Materials' ; Ser Cymru II (European Regional Development Fund) Program 'Sustainable Advanced Materials' ; National Natural Science Foundation of China[51629201] ; National Natural Science Foundation of China[51825204] |
| WOS Research Area | Energy & Fuels ; Materials Science |
| WOS Subject | Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000508323000004 |
| Publisher | NATURE PUBLISHING GROUP |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/136784 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Bai, Yang; Wang, Lianzhou |
| Affiliation | 1.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Nanomat Ctr, St Lucia, Qld, Australia 2.Univ Queensland, Sch Chem Engn, St Lucia, Qld, Australia 3.Swansea Univ, Dept Phys, Swansea, W Glam, Wales 4.Univ Wollongong, Australian Inst Innovat Mat, Inst Superconducting & Elect Mat, Wollongong, NSW, Australia 5.Griffith Univ, Ctr Clean Environm & Energy, Sch Environm & Sci, Gold Coast, Qld, Australia 6.Cent S Univ, Sch Phys & Elect, Inst Super Microstruct & Ultrafast Proc Adv Mat, Changsha, Peoples R China 7.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 8.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 9.Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen Geim Graphene Ctr, Shenzhen, Peoples R China 10.Univ Surrey, Adv Technol Inst, Guildford, Surrey, England |
| Recommended Citation GB/T 7714 | Hao, Mengmeng,Bai, Yang,Zeiske, Stefan,et al. Ligand-assisted cation-exchange engineering for high-efficiency colloidal Cs(1-x)FA(x)PbI(3) quantum dot solar cells with reduced phase segregation[J]. NATURE ENERGY,2020,5(1):79-88. |
| APA | Hao, Mengmeng.,Bai, Yang.,Zeiske, Stefan.,Ren, Long.,Liu, Junxian.,...&Wang, Lianzhou.(2020).Ligand-assisted cation-exchange engineering for high-efficiency colloidal Cs(1-x)FA(x)PbI(3) quantum dot solar cells with reduced phase segregation.NATURE ENERGY,5(1),79-88. |
| MLA | Hao, Mengmeng,et al."Ligand-assisted cation-exchange engineering for high-efficiency colloidal Cs(1-x)FA(x)PbI(3) quantum dot solar cells with reduced phase segregation".NATURE ENERGY 5.1(2020):79-88. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment