{"title":"高效有机太阳能电池用二噻吩吡嗪基宽带隙聚合物供体。","authors":"Zongtao Wang,Hao Wang,Lijun Tu,Qiang Guo,Weiwei He,Yongqiang Shi,Erjun Zhou","doi":"10.1021/acsami.5c10609","DOIUrl":null,"url":null,"abstract":"Developing a wide band gap polymer donor is highly important for realizing high-performance organic solar cells (OSCs). Herein, we are the first to utilize the dithienopyrazine (DTPz) electron-accepting (A) unit to construct novel D-A type copolymers, namely, DTPz-1 and DTPz-2, using benzodithiophene (BDT) and benzodifuran (BDF) as the copolymerizing electron-donating (D) units, respectively. Compared with DTPz-1, DTPz-2 exhibits a cascade energy level with nonfullerene acceptors (NFAs) of L8-BO, proper phase separation scale, strong molecular packing, and high charge mobility. As a result, the device based on DTPz-2/L8-BO achieves a higher power conversion efficiency (PCE) of 15.03% compared with DTPz-1/L8-BO, which has a PCE of 8.14%. This study not only provides a new A structural unit for fabricating high-efficiency D-A type polymer donors but also proves that BDF may be more suitable than classic BDT when designing certain D-A type photovoltaic donors.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"4 1","pages":""},"PeriodicalIF":8.3000,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Dithienopyrazine-Based Wide Band Gap Polymer Donor for Efficient Organic Solar Cells.\",\"authors\":\"Zongtao Wang,Hao Wang,Lijun Tu,Qiang Guo,Weiwei He,Yongqiang Shi,Erjun Zhou\",\"doi\":\"10.1021/acsami.5c10609\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Developing a wide band gap polymer donor is highly important for realizing high-performance organic solar cells (OSCs). Herein, we are the first to utilize the dithienopyrazine (DTPz) electron-accepting (A) unit to construct novel D-A type copolymers, namely, DTPz-1 and DTPz-2, using benzodithiophene (BDT) and benzodifuran (BDF) as the copolymerizing electron-donating (D) units, respectively. Compared with DTPz-1, DTPz-2 exhibits a cascade energy level with nonfullerene acceptors (NFAs) of L8-BO, proper phase separation scale, strong molecular packing, and high charge mobility. As a result, the device based on DTPz-2/L8-BO achieves a higher power conversion efficiency (PCE) of 15.03% compared with DTPz-1/L8-BO, which has a PCE of 8.14%. This study not only provides a new A structural unit for fabricating high-efficiency D-A type polymer donors but also proves that BDF may be more suitable than classic BDT when designing certain D-A type photovoltaic donors.\",\"PeriodicalId\":5,\"journal\":{\"name\":\"ACS Applied Materials & Interfaces\",\"volume\":\"4 1\",\"pages\":\"\"},\"PeriodicalIF\":8.3000,\"publicationDate\":\"2025-07-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Materials & Interfaces\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1021/acsami.5c10609\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Materials & Interfaces","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acsami.5c10609","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
A Dithienopyrazine-Based Wide Band Gap Polymer Donor for Efficient Organic Solar Cells.
Developing a wide band gap polymer donor is highly important for realizing high-performance organic solar cells (OSCs). Herein, we are the first to utilize the dithienopyrazine (DTPz) electron-accepting (A) unit to construct novel D-A type copolymers, namely, DTPz-1 and DTPz-2, using benzodithiophene (BDT) and benzodifuran (BDF) as the copolymerizing electron-donating (D) units, respectively. Compared with DTPz-1, DTPz-2 exhibits a cascade energy level with nonfullerene acceptors (NFAs) of L8-BO, proper phase separation scale, strong molecular packing, and high charge mobility. As a result, the device based on DTPz-2/L8-BO achieves a higher power conversion efficiency (PCE) of 15.03% compared with DTPz-1/L8-BO, which has a PCE of 8.14%. This study not only provides a new A structural unit for fabricating high-efficiency D-A type polymer donors but also proves that BDF may be more suitable than classic BDT when designing certain D-A type photovoltaic donors.
期刊介绍:
ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.