Tejasvini Sharma, Mohammad Adil Afroz, Soumitra Satapathi
{"title":"Unravelling Singlet Fission in Polymer Materials: Mechanisms, Challenges, and Prospects for High-Efficiency Solar Cells","authors":"Tejasvini Sharma, Mohammad Adil Afroz, Soumitra Satapathi","doi":"10.1021/acsphotonics.4c00844","DOIUrl":null,"url":null,"abstract":"Singlet fission (SF) is a process that produces two triplets after the absorption of one photon. This process can be utilized in solar cells to improve efficiency by capturing the energy generally lost as heat (thermalization loss). The SF-based solar cells utilizing conjugated polymers are promising because of some unique advantages of polymer materials, such as flexibility, easy film fabrication and solution processability, tunable chemical functionalization, and broad absorption bands. However, only a few SF-polymers are reported because SF in polymers is less understood. Therefore, it is necessary to review SF in polymer materials and determine a direction to promote their use in solar cells. This Review aims to provide an up-to-date account of the investigation of the SF process in polymers, including the preferred mechanism. The examples of SF in the donor–acceptor polymers and its process as intramolecular singlet fission have been discussed. In addition, the SF in the end-functionalized and pendant polymers are discussed. Furthermore, we provided challenges and possible pathways for the enhancement of the SF efficiency in the polymers.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":null,"pages":null},"PeriodicalIF":6.5000,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Photonics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1021/acsphotonics.4c00844","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Singlet fission (SF) is a process that produces two triplets after the absorption of one photon. This process can be utilized in solar cells to improve efficiency by capturing the energy generally lost as heat (thermalization loss). The SF-based solar cells utilizing conjugated polymers are promising because of some unique advantages of polymer materials, such as flexibility, easy film fabrication and solution processability, tunable chemical functionalization, and broad absorption bands. However, only a few SF-polymers are reported because SF in polymers is less understood. Therefore, it is necessary to review SF in polymer materials and determine a direction to promote their use in solar cells. This Review aims to provide an up-to-date account of the investigation of the SF process in polymers, including the preferred mechanism. The examples of SF in the donor–acceptor polymers and its process as intramolecular singlet fission have been discussed. In addition, the SF in the end-functionalized and pendant polymers are discussed. Furthermore, we provided challenges and possible pathways for the enhancement of the SF efficiency in the polymers.
单裂变(SF)是指吸收一个光子后产生两个三裂变的过程。太阳能电池可以利用这一过程,通过捕获通常以热量形式损失的能量(热化损失)来提高效率。利用共轭聚合物的 SF 太阳能电池前景广阔,因为聚合物材料具有一些独特的优势,如柔韧性、易制膜和溶液加工性、可调化学功能化和宽吸收带。然而,由于对聚合物中 SF 的了解较少,目前仅有少数 SF 聚合物的报道。因此,有必要对聚合物材料中的 SF 进行综述,并确定促进其在太阳能电池中应用的方向。本综述旨在提供聚合物中 SF 过程研究的最新情况,包括首选机制。文章讨论了供体-受体聚合物中的 SF 及其分子内单子裂变过程。此外,还讨论了末端官能化聚合物和悬垂聚合物中的 SF。此外,我们还提出了提高聚合物中 SF 效率的挑战和可能途径。
期刊介绍:
Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.