التفاصيل البيبلوغرافية
| العنوان: |
Defects Passivation via Potassium Iodide Post‐Treatment for Antimony Selenosulfide Solar Cells with Improved Performance. |
| المؤلفون: |
Li, Jiashuai, Gao, Zheng, Hu, Xuzhi, Wang, Shuxin, Liu, Yongjie, Wang, Chen, Dong, Kailian, Zeng, Zhaofeng, Tao, Chen, Fang, Guojia |
| المصدر: |
Advanced Functional Materials; Mar2023, Vol. 33 Issue 10, p1-9, 9p |
| مصطلحات موضوعية: |
SOLAR cells, POTASSIUM iodide, PHOTOVOLTAIC power systems, ANTIMONY, PASSIVATION, ANTISITE defects, ABSORPTION coefficients |
| مستخلص: |
Antimony selenosulfide (Sb2(S,Se)3) has been emerging as a promising light absorber in the past few years owing to tunable bandgap (1.1–1.7 eV), high absorption coefficient (>105 cm−1) and excellent phase and environmental stability. However, the efficiency of Sb2(S,Se)3 solar cells lags far behind the Shockley–Queisser limit. One of the critical obstacles originates from various extrinsic and intrinsic defects. They mostly locate in the deep energy levels and are prone to form recombination centers, inhibiting the improvement of device performance. Herein, surface post‐treatment via potassium iodide is introduced to fabricate high‐quality Sb2(S,Se)3 films and solar cells. The surface post‐treatment not only manipulates the crystal growth process to form compact films with larger grain size but also forms better band alignment and inhibits the formation of deep‐level defects antimony antisite (SbSe), thus improving the quality of heterojunction. Consequently, the resultant Sb2(S,Se)3 solar cells achieve a champion power conversion efficiency of 9.22%. This study provides a new strategy of passivating deep‐level intrinsic defects via surface post‐treatment for high‐efficiency Sb2(S,Se)3 solar cells. [ABSTRACT FROM AUTHOR] |
|
Copyright of Advanced Functional Materials is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
