Weilin Zhang , Chen Duan , Jimin Du , Mengzhen Du , Xiaojun Li , Cong Li , Qiang Guo , Erjun Zhou
{"title":"基于含有卤代噻吩侧链的喹喔啉单元的 D-A 型聚合物，作为高效 CsPbI2Br 包晶太阳能电池的空穴传输材料","authors":"Weilin Zhang , Chen Duan , Jimin Du , Mengzhen Du , Xiaojun Li , Cong Li , Qiang Guo , Erjun Zhou","doi":"10.1016/j.dyepig.2024.112516","DOIUrl":null,"url":null,"abstract":"<div><div>The design and synthesis of hole-transport materials (HTMs) is a hot research topic in perovskite solar cells (PSCs) community. Thanks to the continuous optimization of polymer structures, dopant-free polymers as HTMs have achieved rapid development in PSCs over the past few years. In this study, two D-A type polymers, <strong>PBQ6</strong> and <strong>PBQ9</strong>, are selected as HTMs for CsPbI<sub>2</sub>Br all-inorganic PSCs. Both polymers have the same donor (D) unit of benzodithiophene (BDT) with fluorinated thiophene side chain, but different acceptor (A) unit, fluorinated thiophene for <strong>PBQ6</strong> while chlorinated thiophene for <strong>PBQ9</strong>. Then, the impact of different halogen substitutions on the optical and electrical properties of the polymer HTMs and the photovoltaic performance are investigated. Compared to <strong>PBQ6</strong>, <strong>PBQ9</strong> demonstrates better energy level alignment with CsPbI<sub>2</sub>Br, more efficient carrier extraction and transportation, and enhanced suppression of non-radiative losses. Consequently, CsPbI<sub>2</sub>Br PSCs based on <strong>PBQ9</strong>-HTM achieve a higher power conversion efficiency (PCE) of 16.41 % compared to those based on <strong>PBQ6</strong>-HTM, which exhibit a PCE of 14.93 %. This study underscores the rational side chain engineering on A unit for D-A type polymer can improve the performance of HTMs, thereby further enhancing the efficiency of PSCs.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"233 ","pages":"Article 112516"},"PeriodicalIF":4.1000,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"D-A type polymers based on quinoxaline unit containing halogenated thiophene side chain as hole transport materials for efficient CsPbI2Br perovskite solar cells\",\"authors\":\"Weilin Zhang , Chen Duan , Jimin Du , Mengzhen Du , Xiaojun Li , Cong Li , Qiang Guo , Erjun Zhou\",\"doi\":\"10.1016/j.dyepig.2024.112516\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The design and synthesis of hole-transport materials (HTMs) is a hot research topic in perovskite solar cells (PSCs) community. Thanks to the continuous optimization of polymer structures, dopant-free polymers as HTMs have achieved rapid development in PSCs over the past few years. In this study, two D-A type polymers, <strong>PBQ6</strong> and <strong>PBQ9</strong>, are selected as HTMs for CsPbI<sub>2</sub>Br all-inorganic PSCs. Both polymers have the same donor (D) unit of benzodithiophene (BDT) with fluorinated thiophene side chain, but different acceptor (A) unit, fluorinated thiophene for <strong>PBQ6</strong> while chlorinated thiophene for <strong>PBQ9</strong>. Then, the impact of different halogen substitutions on the optical and electrical properties of the polymer HTMs and the photovoltaic performance are investigated. Compared to <strong>PBQ6</strong>, <strong>PBQ9</strong> demonstrates better energy level alignment with CsPbI<sub>2</sub>Br, more efficient carrier extraction and transportation, and enhanced suppression of non-radiative losses. Consequently, CsPbI<sub>2</sub>Br PSCs based on <strong>PBQ9</strong>-HTM achieve a higher power conversion efficiency (PCE) of 16.41 % compared to those based on <strong>PBQ6</strong>-HTM, which exhibit a PCE of 14.93 %. This study underscores the rational side chain engineering on A unit for D-A type polymer can improve the performance of HTMs, thereby further enhancing the efficiency of PSCs.</div></div>\",\"PeriodicalId\":302,\"journal\":{\"name\":\"Dyes and Pigments\",\"volume\":\"233 \",\"pages\":\"Article 112516\"},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2024-10-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Dyes and Pigments\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0143720824005825\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dyes and Pigments","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0143720824005825","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
D-A type polymers based on quinoxaline unit containing halogenated thiophene side chain as hole transport materials for efficient CsPbI2Br perovskite solar cells
The design and synthesis of hole-transport materials (HTMs) is a hot research topic in perovskite solar cells (PSCs) community. Thanks to the continuous optimization of polymer structures, dopant-free polymers as HTMs have achieved rapid development in PSCs over the past few years. In this study, two D-A type polymers, PBQ6 and PBQ9, are selected as HTMs for CsPbI2Br all-inorganic PSCs. Both polymers have the same donor (D) unit of benzodithiophene (BDT) with fluorinated thiophene side chain, but different acceptor (A) unit, fluorinated thiophene for PBQ6 while chlorinated thiophene for PBQ9. Then, the impact of different halogen substitutions on the optical and electrical properties of the polymer HTMs and the photovoltaic performance are investigated. Compared to PBQ6, PBQ9 demonstrates better energy level alignment with CsPbI2Br, more efficient carrier extraction and transportation, and enhanced suppression of non-radiative losses. Consequently, CsPbI2Br PSCs based on PBQ9-HTM achieve a higher power conversion efficiency (PCE) of 16.41 % compared to those based on PBQ6-HTM, which exhibit a PCE of 14.93 %. This study underscores the rational side chain engineering on A unit for D-A type polymer can improve the performance of HTMs, thereby further enhancing the efficiency of PSCs.
期刊介绍：
Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied.
Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media.
The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.
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