{"title":"通过苯胺界面改性解决 PEDOT:PSS 功函数与导电率的矛盾,实现高性能 Perovskite 发光二极管","authors":"Wei Shen, Yanxing He, Yanfeng Chen, Shuo Chen, Zhihua Chen, Chenxi Liu, Hao Cui, Suyun Liu, Lihui Liu, Gang Cheng, Shufen Chen","doi":"10.1002/lpor.202400707","DOIUrl":null,"url":null,"abstract":"Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is one of the most widely used functional materials for hole transport layer in perovskite light-emitting diode (LED). Tuning its work function (WF) and conductivity (κ) is a key issue for promoting perovskite LED performance. While decreasing its WF always reduces its κ and vice versa. Solving such contradiction is quite significant for promoting the development and commercialization of perovskite LED. Herein, the aniline (Ani) is employed for PEDOT:PSS interface modification. Ani inserted between PEDOT and PSS to weaken electrostatic interaction between sulfonic acid group in PSS chain and thiophene group in PEDOT chain, which results in increased delocalized electrons to enhance its κ. More importantly, the acid–base reaction decreases high acidity of PEDOT:PSS, which is an effective way to increase its WF and decrease its interface defects density. Meanwhile, such interface modification avoids PEDOT:PSS phase separation and ensures the uniformity of film. After Ani modification, the WF of PEDOT:PSS increase from 5.16 to 5.31 eV, the κ increases from 0.30 to 8.62 S cm<sup>−1</sup>, and the hole mobility enhances from 0.716 × 10<sup>−6</sup> to 1.306 × 10<sup>−6</sup> cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>. Modified PEDOT:PSS boost CsPbI<sub>3</sub> LED achieving a maximum external quantum efficiency of 17.70%.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":9.8000,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Solving the Contradiction of Work Function and Conductivity in PEDOT:PSS to Achieve High-Performance Perovskite Light-Emitting Diode via Aniline Interface Modification\",\"authors\":\"Wei Shen, Yanxing He, Yanfeng Chen, Shuo Chen, Zhihua Chen, Chenxi Liu, Hao Cui, Suyun Liu, Lihui Liu, Gang Cheng, Shufen Chen\",\"doi\":\"10.1002/lpor.202400707\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is one of the most widely used functional materials for hole transport layer in perovskite light-emitting diode (LED). Tuning its work function (WF) and conductivity (κ) is a key issue for promoting perovskite LED performance. While decreasing its WF always reduces its κ and vice versa. Solving such contradiction is quite significant for promoting the development and commercialization of perovskite LED. Herein, the aniline (Ani) is employed for PEDOT:PSS interface modification. Ani inserted between PEDOT and PSS to weaken electrostatic interaction between sulfonic acid group in PSS chain and thiophene group in PEDOT chain, which results in increased delocalized electrons to enhance its κ. More importantly, the acid–base reaction decreases high acidity of PEDOT:PSS, which is an effective way to increase its WF and decrease its interface defects density. Meanwhile, such interface modification avoids PEDOT:PSS phase separation and ensures the uniformity of film. After Ani modification, the WF of PEDOT:PSS increase from 5.16 to 5.31 eV, the κ increases from 0.30 to 8.62 S cm<sup>−1</sup>, and the hole mobility enhances from 0.716 × 10<sup>−6</sup> to 1.306 × 10<sup>−6</sup> cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>. Modified PEDOT:PSS boost CsPbI<sub>3</sub> LED achieving a maximum external quantum efficiency of 17.70%.\",\"PeriodicalId\":204,\"journal\":{\"name\":\"Laser & Photonics Reviews\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":9.8000,\"publicationDate\":\"2024-08-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Laser & Photonics Reviews\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1002/lpor.202400707\",\"RegionNum\":1,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Laser & Photonics Reviews","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1002/lpor.202400707","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
摘要
聚(3,4-亚乙二氧基噻吩)苯乙烯磺酸盐(PEDOT:PSS)是最广泛应用于包晶发光二极管(LED)空穴传输层的功能材料之一。调节其功函数(WF)和电导率(κ)是提高透镜发光二极管性能的关键问题。降低其功函数总会降低其κ,反之亦然。解决这一矛盾对于促进透镜 LED 的开发和商业化意义重大。在此,我们采用苯胺(Ani)对 PEDOT:PSS 进行界面改性。Ani 插入 PEDOT 和 PSS 之间,削弱了 PSS 链中磺酸基团与 PEDOT 链中噻吩基团之间的静电作用,从而增加了析电子,提高了其 κ。更重要的是,酸碱反应会降低 PEDOT:PSS 的高酸度,从而有效增加其 WF 值并降低其界面缺陷密度。同时,这种界面改性避免了 PEDOT:PSS 的相分离,保证了薄膜的均匀性。经过 Ani 修饰后,PEDOT:PSS 的 WF 从 5.16 eV 提高到 5.31 eV,κ 从 0.30 S cm-1 提高到 8.62 S cm-1,空穴迁移率从 0.716 × 10-6 提高到 1.306 × 10-6 cm2 V-1 s-1。改性 PEDOT:PSS 促进 CsPbI3 LED 实现了 17.70% 的最大外部量子效率。
Solving the Contradiction of Work Function and Conductivity in PEDOT:PSS to Achieve High-Performance Perovskite Light-Emitting Diode via Aniline Interface Modification
Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is one of the most widely used functional materials for hole transport layer in perovskite light-emitting diode (LED). Tuning its work function (WF) and conductivity (κ) is a key issue for promoting perovskite LED performance. While decreasing its WF always reduces its κ and vice versa. Solving such contradiction is quite significant for promoting the development and commercialization of perovskite LED. Herein, the aniline (Ani) is employed for PEDOT:PSS interface modification. Ani inserted between PEDOT and PSS to weaken electrostatic interaction between sulfonic acid group in PSS chain and thiophene group in PEDOT chain, which results in increased delocalized electrons to enhance its κ. More importantly, the acid–base reaction decreases high acidity of PEDOT:PSS, which is an effective way to increase its WF and decrease its interface defects density. Meanwhile, such interface modification avoids PEDOT:PSS phase separation and ensures the uniformity of film. After Ani modification, the WF of PEDOT:PSS increase from 5.16 to 5.31 eV, the κ increases from 0.30 to 8.62 S cm−1, and the hole mobility enhances from 0.716 × 10−6 to 1.306 × 10−6 cm2 V−1 s−1. Modified PEDOT:PSS boost CsPbI3 LED achieving a maximum external quantum efficiency of 17.70%.
期刊介绍:
Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications.
As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics.
The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.