9.7%-efficient Sb2(S,Se)3 solar cells with a dithieno[3,2-b: 2′,3′-d]pyrrole-cored hole transporting material,Energy & Environmental Science

当前位置： X-MOL 学术 › Energy Environ. Sci. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

9.7%-efficient Sb2(S,Se)3 solar cells with a dithieno[3,2-b: 2′,3′-d]pyrrole-cored hole transporting material
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2020-12-8 , DOI: 10.1039/d0ee02239j
Chenhui Jiang _{1,

2,

3,

4,

5} , Jie Zhou _{6,

7,

8,

9} , Rongfeng Tang _{1,

2,

3,

4,

5} , Weitao Lian _{1,

2,

3,

4,

5} , Xiaomin Wang _{1,

2,

3,

4,

5} , Xunyong Lei _{1,

5,

10,

11,

12} , Hualing Zeng _{1,

5,

10,

11,

12} , Changfei Zhu _{1,

2,

3,

4,

5} , Weihua Tang _{6,

7,

8,

9} , Tao Chen _{1,

2,

3,

4,

5}

Affiliation

Antimony selenosulfide, Sb₂(S,Se)₃, is a promising next-generation solar cell material with superior photovoltaic properties and high stability. However, the efficiency of Sb₂(S,Se)₃ solar cells lags far behind its theoretical value and other well-established thin-film solar cells. Herein, we report a one-step hydrothermal process by employing selenourea as a selenium source for a single-phase and compact Sb₂(S,Se)₃ light absorber film, which possessed a desirable bandgap of 1.50 eV. When a low-cost and planar dithieno[3,2-b:2′,3′-d]pyrrole-cored small molecule (DTPThMe-ThTPA) is used as the hole transporting material, the interfacial energy level alignment is optimized. We disclose that chemical interaction formed between neighbouring thiophene and Sb atoms is critical for carrier collection and suppression of charge recombination, resulting in a champion efficiency of 9.7% with DTPThMe-ThTPA and increased stability, which is comparable to the device based on conventional Spiro-OMeTAD.

中文翻译：

具有双噻吩并[3,2-b：2'，3'-d]吡咯芯空穴传输材料的Sb2（S，Se）3太阳能电池的效率为9.7％

硒化锑锑Sb ₂（S，Se）₃是具有良好光伏性能和高稳定性的有前途的下一代太阳能电池材料。但是，Sb ₂（S，Se）₃太阳能电池的效率远远落后于其理论值和其他公认的薄膜太阳能电池。本文中，我们报告了一种采用硒化硒作为单相致密Sb ₂（S，Se）₃光吸收膜的硒源的一步法水热过程，该膜具有理想的1.50 eV带隙。当低成本且平面的二噻吩并[3,2- b：2'，3'- d以吡咯为核的小分子（DTPThMe-ThTPA）作为空穴传输材料，优化了界面能级排列。我们公开了在相邻的噻吩和Sb原子之间形成的化学相互作用对于载流子收集和电荷重组的抑制至关重要，从而使DTPThMe-ThTPA的冠军效率达到了9.7％，并提高了稳定性，这与基于传统Spiro- OMeTAD。

更新日期：2020-12-21

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11