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Special Issue:
SPECIAL TOPIC — Emerging photovoltaic materials and devices
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| SPECIAL TOPIC—Emerging photovoltaic materials and devices |
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A silazane additive for CsPbI2Br perovskite solar cells |
| Ruiqi Cao(曹瑞琪)1,2,†, Yaochang Yue(乐耀昌)2,3,†, Hong Zhang(张弘)2, Qian Cheng(程倩)2, Boxin Wang(王博欣)2, Shilin Li(李世麟)2,3, Yuan Zhang(张渊)3, Shuhong Li(李书宏)1,‡, and Huiqiong Zhou(周惠琼)2,§ |
1 Beijing Technology&Business University, Department of Chemistry, Beijing 100048, China;
2 CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, Nanoscience National Center for Nanoscience and Technology, Beijing 100190, China;
3 HEEGER Beijing Research&Development Center, Beihang University, Beijing 100191, China |
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Abstract Adding additives into peroskite precursor solution has been proven as a simple and efficient strategy to improve the quality of peroskite films. In this work, we demonstrate an effective additive strategy to improve the quality of all-inorganic perovskite films by adding a novel silazane additive heptamethyldisilazane (HDMS). The power conversion efficiency (PCE) of the optimized devices is enhanced from 14.55% to 15.31% with an open-circuit voltage over 1.26 V due to the higher quality perovskite films with lower trap density after the incorporation of HDMS. More interestingly, the HDMS devices exhibit superior humidity and thermal stability compared with the control ones. This work provides a simple and efficient strategy to enhance the device performance and stability of all-inorganic perovskite solar cells, which could facilitate its commercialization.
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Received: 20 February 2022
Revised: 24 May 2022
Accepted manuscript online: 27 June 2022
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PACS:
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01.50.Rt
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(Physics tournaments and contests)
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14.70.Bh
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(Photons)
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| Fund: This work was financially supported by the National Key Research and Development Program of China (Grant No. 2017YFA0206600), the National Natural Science Foundation of China (Grant No. 21922505), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB36000000). |
Corresponding Authors:
Shuhong Li, Huiqiong Zhou
E-mail: lish@th.btbu.edu.cn;zhouhq@nanoctr.cn
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Cite this article:
Ruiqi Cao(曹瑞琪), Yaochang Yue(乐耀昌), Hong Zhang(张弘), Qian Cheng(程倩), Boxin Wang(王博欣), Shilin Li(李世麟), Yuan Zhang(张渊), Shuhong Li(李书宏), and Huiqiong Zhou(周惠琼) A silazane additive for CsPbI2Br perovskite solar cells 2022 Chin. Phys. B 31 110101
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