Academic Journal
Gradient Engineered Light Absorption Layer for Enhanced Carrier Separation Efficiency in Perovskite Solar Cells
| العنوان: | Gradient Engineered Light Absorption Layer for Enhanced Carrier Separation Efficiency in Perovskite Solar Cells |
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| المؤلفون: | Wu, Gaozhu, Zhu, Qing, Zhang, Teng, Zou, Ziqi, Wang, Weiping, Cao, Yiyan, Kong, Lijing, Zheng, Xuanli, Wu, Yaping, Li, Xu, Wu, Zhiming, Kang, Junyong |
| المساهمون: | National Key Research and Development Program of China, National Natural Science Foundation of China, Natural Science Foundation of Fujian Province of China, Science and Technology Key Projects of Xiamen, Fundamental Research Funds for Xiamen Universities, China |
| المصدر: | Nanoscale Research Letters ; volume 15, issue 1 ; ISSN 1556-276X |
| بيانات النشر: | Springer Science and Business Media LLC |
| سنة النشر: | 2020 |
| الوصف: | Carrier transport behavior in the perovskite light absorption layer significantly impacts the performance of perovskite solar cells (PSCs). In this work, reduced carrier recombination losses were achieved by the design of a band structure in perovskite materials. An ultrathin (PbI 2 /PbBr 2 ) n film with a gradient thickness ratio was deposited as the lead halide precursor layer by a thermal evaporation method, and PSCs with a gradient band structure in the perovskite absorption layer were fabricated by a two-step method in ambient atmosphere. For comparison, PSCs with homogeneous perovskite materials of MAPbI 3 and MAPbI x Br 3 − x were fabricated as well. It is found that the gradient type-II band structure greatly reduces the carrier lifetime and enhances the carrier separation efficiency. As a result, the PSCs with a gradient band structure exhibit an average power conversion efficiency of 17.5%, which is 1–2% higher than that of traditional PSCs. This work provides a novel method for developing high-efficiency PSCs. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1186/s11671-020-03359-0 |
| DOI: | 10.1186/s11671-020-03359-0.pdf |
| DOI: | 10.1186/s11671-020-03359-0/fulltext.html |
| الاتاحة: | http://dx.doi.org/10.1186/s11671-020-03359-0 https://link.springer.com/content/pdf/10.1186/s11671-020-03359-0.pdf https://link.springer.com/article/10.1186/s11671-020-03359-0/fulltext.html |
| Rights: | https://creativecommons.org/licenses/by/4.0 ; https://creativecommons.org/licenses/by/4.0 |
| رقم الانضمام: | edsbas.7FC45A53 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1186/s11671-020-03359-0 |
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