Oriented Organization of Poly(3-Hexylthiophene) for Efficient and Stable Antimony Sulfide Solar Cells,Energy & Environmental Materials

当前位置： X-MOL 学术 › Energy Environ. Mater. › 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.)

Oriented Organization of Poly(3-Hexylthiophene) for Efficient and Stable Antimony Sulfide Solar Cells
Energy & Environmental Materials ( IF 13.0 ) Pub Date : 2022-06-23 , DOI: 10.1002/eem2.12453
Jinxiang Gao _{1,

2} , Rongfeng Tang _{1,

2} , Huiling Cai _{1,

2} , Zhiyuan Cai _{1,

2} , Peng Xiao ₁ , Gang Li _{1,

2} , Chenhui Jiang ₁ , Changfei Zhu _{1,

2} , Tao Chen _{1,

2}

Affiliation

Poly(3-hexylthiophene) (P3HT), as a traditional organic hole-transporting material (HTM), is widely used in thin-film solar cells due to its high charge mobility and good thermal stability. However, the P3HT films obtained by the traditional method are amorphous, which is unfavorable to hole extraction and transport. Here, a low-toxicity solvent 1,2,4-trimethylbenzene (TMB) was used as the solvent instead of the commonly used halogen solvent chlorobenzene (CB) to dissolve P3HT. Thus, the self-assembled nanofibrous P3HT film was prepared and applied as HTM in the newly emerged Sb₂S₃ solar cells. According to the density functional theory calculations, the interface contact between TMB-P3HT and Sb₂S₃ was enhanced via the bonding interaction of S in P3HT and Sb in Sb₂S₃. Through transient absorption spectroscopy characterization, the enhanced interface contact improves the charge extraction ability of TMB-P3HT when compared to the CB-P3HT film. Thus, the TMB-P3HT-based Sb₂S₃ solar cell delivers a power conversion efficiency of 6.21%, which is 9.7% higher than that of the CB-P3HT-based device. Furthermore, the dopant-free TMB-P3HT-based Sb₂S₃ devices exhibit excellent environmental stability compared with Spiro-OMeTAD-based devices. This work demonstrates that the application of P3HT and the solvent engineering of HTM are applicable strategies for developing Sb₂S₃ solar cells with high efficiency and stability.

中文翻译：

聚（3-己基噻吩）的定向组织用于高效稳定的硫化锑太阳能电池

聚(3-己基噻吩)(P3HT)作为传统的有机空穴传输材料(HTM)，由于其高电荷迁移率和良好的热稳定性而广泛应用于薄膜太阳能电池。然而，传统方法获得的P3HT薄膜是非晶态的，不利于空穴的提取和传输。这里，使用低毒性溶剂1,2,4-三甲苯（TMB）作为溶剂代替常用的卤素溶剂氯苯（CB）来溶解P3HT。由此，制备了自组装纳米纤维P3HT薄膜，并将其作为HTM应用于新出现的Sb ₂ S ₃太阳能电池中。根据密度泛函理论计算，TMB-P3HT和Sb ₂ S _{3之间的界面接触通过P3HT中的S和Sb}₂ S ₃中的Sb的键合相互作用增强。通过瞬态吸收光谱表征，与 CB-P3HT 薄膜相比，增强的界面接触提高了 TMB-P3HT 的电荷提取能力。因此，基于TMB-P3HT的Sb ₂ S ₃太阳能电池的功率转换效率为6.21%，比基于CB-P3HT的器件高9.7%。此外，与基于Spiro-OMeTAD的器件相比，基于无掺杂剂的TMB-P3HT的Sb ₂ S _{3器件表现出优异的环境稳定性。}这项工作表明，P3HT 的应用和 HTM 的溶剂工程是开发高效、稳定的Sb ₂ S _{3太阳能电池的适用策略。}

更新日期：2022-06-23

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文