Stabilizing Perovskite Solar Cells Based on 2,2′,7,7′‐Tetrakis(N,N‐DI‐P‐Methoxyphenylamine)‐9,9′‐Spirobifluoren with Perfluoropolyethers

IF 1.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Physica Status Solidi A-applications and Materials Science Pub Date : 2024-06-24 DOI:10.1002/pssa.202400390

Xiangying Xue, Weichuang Yang, Zhiqin Ying, Yuheng Zeng, Xi Yang, Jichun Ye

{"title":"Stabilizing Perovskite Solar Cells Based on 2,2′,7,7′‐Tetrakis(N,N‐DI‐P‐Methoxyphenylamine)‐9,9′‐Spirobifluoren with Perfluoropolyethers","authors":"Xiangying Xue, Weichuang Yang, Zhiqin Ying, Yuheng Zeng, Xi Yang, Jichun Ye","doi":"10.1002/pssa.202400390","DOIUrl":null,"url":null,"abstract":"Organic–inorganic hybrid perovskites in combination with the hole‐transport material (HTM) 2,2′,7,7′‐tetrakis(N,N‐di‐p‐methoxyphenylamine)‐9,9′‐spirobifluoren (spiro‐OMeTAD) yield impressive power conversion efficiency (PCE) in n–i–p perovskite solar cells (PSC). To ensure sufficient hole extraction from the perovskite absorber to the metal electrode, the lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) doping is considered indispensable to promote spiro‐OMeTAD oxidization and obtain consequently enhanced conductivity. However, LiTFSI‐doped spiro‐OMeTAD usually leads to a reduced stability of PSCs because of the hygroscopic nature of LiTFSI, which further limits its potential commercialization. Herein, a hydrophobic material, namely perfluoropolyethers (PFPEs), is used as surface modifier of doped HTM to improve both efficiency and stability of PSCs. It is revealed that the introduction of PFPE increases the concentration of positive radicals, enhances charge‐carrier transport, and improves stability of PSCs under wetting stress. Moreover, the device based on PFPE achieves a champion PCE of 21.94%. In these findings, valuable insights are provided for the future commercialization of PSCs.","PeriodicalId":20074,"journal":{"name":"Physica Status Solidi A-applications and Materials Science","volume":"3 1","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica Status Solidi A-applications and Materials Science","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/pssa.202400390","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Organic–inorganic hybrid perovskites in combination with the hole‐transport material (HTM) 2,2′,7,7′‐tetrakis(N,N‐di‐p‐methoxyphenylamine)‐9,9′‐spirobifluoren (spiro‐OMeTAD) yield impressive power conversion efficiency (PCE) in n–i–p perovskite solar cells (PSC). To ensure sufficient hole extraction from the perovskite absorber to the metal electrode, the lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) doping is considered indispensable to promote spiro‐OMeTAD oxidization and obtain consequently enhanced conductivity. However, LiTFSI‐doped spiro‐OMeTAD usually leads to a reduced stability of PSCs because of the hygroscopic nature of LiTFSI, which further limits its potential commercialization. Herein, a hydrophobic material, namely perfluoropolyethers (PFPEs), is used as surface modifier of doped HTM to improve both efficiency and stability of PSCs. It is revealed that the introduction of PFPE increases the concentration of positive radicals, enhances charge‐carrier transport, and improves stability of PSCs under wetting stress. Moreover, the device based on PFPE achieves a champion PCE of 21.94%. In these findings, valuable insights are provided for the future commercialization of PSCs.

查看原文本刊更多论文

用全氟聚醚稳定基于 2,2′,7,7′-四(N,N-DI-P-甲氧基苯胺)-9,9′-螺二芴的过氧化物太阳能电池

有机-无机混合包晶与空穴传输材料（HTM）2,2′,7,7′-四（N,N-二对甲氧基苯胺）-9,9′-螺二芴（spiro-OMeTAD）相结合，在正对正包晶太阳能电池（PSC）中产生了令人印象深刻的功率转换效率（PCE）。为了确保从透辉石吸收体到金属电极有足够的空穴萃取，双（三氟甲烷磺酰基）亚胺锂（LiTFSI）掺杂被认为是促进螺-OMeTAD 氧化并因此获得更高的电导率所不可或缺的。然而，由于 LiTFSI 的吸湿性，掺杂 LiTFSI 的螺-OMeTAD 通常会降低 PSC 的稳定性，这进一步限制了其商业化的潜力。在此，一种疏水性材料，即全氟聚醚（PFPEs），被用作掺杂 HTM 的表面改性剂，以提高 PSCs 的效率和稳定性。研究表明，全氟聚醚的引入增加了正自由基的浓度，增强了电荷载流子的传输，提高了 PSCs 在润湿应力下的稳定性。此外，基于全氟聚醚的器件实现了 21.94% 的冠军 PCE。这些发现为 PSCs 未来的商业化提供了宝贵的启示。

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分钟内获得全文求助全文

来源期刊

Physica Status Solidi A-applications and Materials Science 工程技术-材料科学：综合

CiteScore

3.70

自引率

5.00%

发文量

393

审稿时长

2 months

期刊介绍： The physica status solidi (pss) journal group is devoted to the thorough peer review and the rapid publication of new and important results in all fields of solid state and materials physics, from basic science to applications and devices. Among the largest and most established international publications, the pss journals publish reviews, letters and original articles, as regular content as well as in special issues and topical sections.