A Novel Self-Assembled Hole-Transporting Monolayer with Extending Conjugation for Inverted Perovskite Solar Cells

IF 12.1 2区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Small Pub Date : 2025-03-22 DOI:10.1002/smll.202500296

Qian Wang, Botong Li, Hanqin Yang, Zongxu Na, Yijin Wei, Xuepeng Liu, Mingyuan Han, Xianfu Zhang, Weilun Du, Ghadari Rahim, Yong Ding, Zhipeng Shao, Huai Yang, Songyuan Dai

{"title":"A Novel Self-Assembled Hole-Transporting Monolayer with Extending Conjugation for Inverted Perovskite Solar Cells","authors":"Qian Wang, Botong Li, Hanqin Yang, Zongxu Na, Yijin Wei, Xuepeng Liu, Mingyuan Han, Xianfu Zhang, Weilun Du, Ghadari Rahim, Yong Ding, Zhipeng Shao, Huai Yang, Songyuan Dai","doi":"10.1002/smll.202500296","DOIUrl":null,"url":null,"abstract":"<p>The application of self-assembled monolayers (SAMs) as hole-transporting materials has greatly improved the performance of inverted perovskite solar cells. Structure engineering of SAMs has proven to be an effective approach to enhance device performance. In this work, a novel SAM featuring extended conjugation is designed and synthesized, designated E-CbzBT. Compared with CbzBT, E-CbzBT exhibits enhanced asymmetric and noncoplanar screw-shaped configuration, leading to uniform and tight packing on ITO. The uniform packing of E-CbzBT increases the wettability of the perovskite precursor solution on the substrate, thereby facilitating perovskite crystallinity and suppressing interfacial trap density more effectively than CbzBT. Accordingly, inverted PSCs employing E-CbzBT reach a champion power conversion efficiency of 25.15%, surpassing 24.06% for CbzBT-based devices. Importantly, the E-CbzBT-based PSCs demonstrate superior ambient and thermal stability. The extending conjugation approach in SAMs represents a promising avenue for further advancements in perovskite solar cell technology.</p>","PeriodicalId":228,"journal":{"name":"Small","volume":"21 18","pages":""},"PeriodicalIF":12.1000,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Small","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/smll.202500296","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The application of self-assembled monolayers (SAMs) as hole-transporting materials has greatly improved the performance of inverted perovskite solar cells. Structure engineering of SAMs has proven to be an effective approach to enhance device performance. In this work, a novel SAM featuring extended conjugation is designed and synthesized, designated E-CbzBT. Compared with CbzBT, E-CbzBT exhibits enhanced asymmetric and noncoplanar screw-shaped configuration, leading to uniform and tight packing on ITO. The uniform packing of E-CbzBT increases the wettability of the perovskite precursor solution on the substrate, thereby facilitating perovskite crystallinity and suppressing interfacial trap density more effectively than CbzBT. Accordingly, inverted PSCs employing E-CbzBT reach a champion power conversion efficiency of 25.15%, surpassing 24.06% for CbzBT-based devices. Importantly, the E-CbzBT-based PSCs demonstrate superior ambient and thermal stability. The extending conjugation approach in SAMs represents a promising avenue for further advancements in perovskite solar cell technology.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

反向钙钛矿太阳能电池中一种新型扩展共轭自组装空穴传输单层膜

自组装单层（sam）作为空穴传输材料的应用极大地提高了倒钙钛矿太阳能电池的性能。对地对空导弹进行结构工程是提高器件性能的有效途径。本文设计并合成了一种具有扩展共轭的新型SAM，命名为E-CbzBT。与CbzBT相比，E-CbzBT表现出增强的非对称和非共面螺旋形结构，使得ITO表面的封装均匀而紧密。E-CbzBT的均匀填充增加了钙钛矿前驱体溶液在衬底上的润湿性，从而比CbzBT更有效地促进钙钛矿结晶度和抑制界面陷阱密度。因此，采用E-CbzBT的倒置PSCs的功率转换效率达到了25.15%，超过了基于cbzbt的器件的24.06%。重要的是，基于e - cbzbt的psc表现出优越的环境和热稳定性。SAMs中的扩展共轭方法代表了钙钛矿太阳能电池技术进一步发展的有希望的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Small 工程技术-材料科学：综合

CiteScore

17.70

自引率

3.80%

发文量

1830

审稿时长

2.1 months

期刊介绍： Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments. With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology. Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.