| Enhancement of photoelectric performance for CsPbI2Br solar cells by the synergistic effect of binary additives | |
| Chen, Qiulu1; Lin, Like2; Wang, Yanzhou1; Gao, Zhe1; Fu, Yujun1; Liu, Qiming1; Li, Junshuai1; He, Deyan1 | |
| 2023-01 | |
| Online publication date | 2023-01 |
| Source Publication | Journal of Materiomics Impact Factor & Quartile |
| ISSN | 2352-8478 |
| Volume | 9Issue:1Pages:27-34 |
| page numbers | 8 |
| Abstract | CsPbI2Br-based perovskite solar cells (PSCs) have attracted much attention because of their excellent phase stability and appropriate bandgap. However, numerous defects of undercoordinated ions or mobile species are the sites of carrier nonradiative recombination, causing a low power conversion efficiency (PCE). In this work, NaCl and nitrogen-doped graphene quantum dots (N-GQDs) as binary additives are introduced into perovskite precursor to obtain high-quality photoactive films. Chloride ion (Cl-) is incorporated into perovskite due to the same physical and chemical properties as bromine (Br-), that align the energy level of CsPbI2Br, decrease the energy barrier between perovskite and P3HT to promote carrier transport and extraction, hence result in the reduced energy loss. Meanwhile, because of its good conductivity, N-GQDs at grain boundaries can rapidly conduct photogenerated electrons to SnO2, sup-pressing carrier recombination at grain boundaries. Furthermore, the trap state density of the CsPbI2Br film with binary additives is reduced, which could prolong the carrier lifetime, and improve surface morphology. As a result, a PCE of 15.37% for CsPbI2Br PSCs with binary additives is obtained,which shows similar to 22.76% relative increment compare with the pristine PSCs. Therefore, a simple and convenient optimization strategy of binary additives for PSCs is proposed in this work. (c) 2022 The Authors. Published by Elsevier B.V. on behalf of The Chinese Ceramic Society. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| Keyword | All-inorganic perovskite solar cells Synergistic effect Carrier transport Binary additives engineering |
| Publisher | ELSEVIER |
| DOI | 10.1016/j.jmat.2022.09.006 |
| Indexed By | SCIE |
| Language | 英语 |
| WOS Research Area | Chemistry ; Materials Science ; Physics |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Applied |
| WOS ID | WOS:000960539900001 |
| Original Document Type | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/501381 |
| Collection | 兰州大学 |
| Corresponding Author | Liu, Qiming; Li, Junshuai; He, Deyan |
| Affiliation | 1.Lanzhou Univ, LONGi Inst Future Technol, Sch Mat & Energy, Lanzhou 730000, Peoples R China; 2.Nanjing Univ, Coll Engn & Appl Sci, Collaborat Innovat Ctr Adv Microstruct, Jiangsu Key Lab Artificial Funct Mat, Nanjing 210093, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Qiulu,Lin, Like,Wang, Yanzhou,et al. Enhancement of photoelectric performance for CsPbI2Br solar cells by the synergistic effect of binary additives[J]. Journal of Materiomics,2023,9(1):27-34. |
| APA | Chen, Qiulu.,Lin, Like.,Wang, Yanzhou.,Gao, Zhe.,Fu, Yujun.,...&He, Deyan.(2023).Enhancement of photoelectric performance for CsPbI2Br solar cells by the synergistic effect of binary additives.Journal of Materiomics,9(1),27-34. |
| MLA | Chen, Qiulu,et al."Enhancement of photoelectric performance for CsPbI2Br solar cells by the synergistic effect of binary additives".Journal of Materiomics 9.1(2023):27-34. |
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