Sulfonyldibenzene-based hole-transporting materials for efficient n-i-p perovskite solar cells

• 作者: Tian Qin Fei Wu Yingxiao Mu Yubo Long Linna Zhu Juan Zhao Zhenguo Chi
• 来源期刊: 中国科学：化学（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: ARTICLES
• 页码范围: 127-133
• 页数: 7页
• 语种: 英文

摘要

Organic hole-transporting materials(HTMs)are an essential component in conventional perovskite solar cells(PSCs).In this work,two sulfonyldibenzene-based molecules,named CS-04 and CS-05,are synthesized and employed as HTMs in n-i-p PSCs.In comparison with CS-04,the carbazole-substituted methoxytriphenylamine(CzMOTPA)group in CS-05 exhibits an increased degree of molecular distortion,thus endowing CS-05 with excellent solvent solubility and film-formation ability.Moreover,CS-05 shows a high hole mobility,superior hole extraction and hole transporting properties.As a result,CS-05 yields impressive device performances with a high power conversion efficiency(PCE)of 20.15％,while that of CS-04 based device is 19.50％,which is comparable to that of the Spiro-OMeTAD based control device(19.59％).This finding illustrates the potential of sulfonyldibenzene-based molecules for the applications in PSCs,and also provides a novel avenue to improve the performances and stability of PSCs by tailoring the sulfonyldibenzene-based molecules.