Efficient All-Small-Molecule Organic Solar Cells Based on an Asymmetric Coumarin-Anthracene Donor

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2025-02-12 DOI:10.1021/acsaem.4c0286910.1021/acsaem.4c02869

Nirmala Niharika Bhuyan, Shyam Shankar S, Moksyaraj Bhoi, Hemraj Dahiya, Rahul Singhal, Ganesh D. Sharma* and Amaresh Mishra*,

{"title":"Efficient All-Small-Molecule Organic Solar Cells Based on an Asymmetric Coumarin-Anthracene Donor","authors":"Nirmala Niharika Bhuyan, Shyam Shankar S, Moksyaraj Bhoi, Hemraj Dahiya, Rahul Singhal, Ganesh D. Sharma* and Amaresh Mishra*, ","doi":"10.1021/acsaem.4c0286910.1021/acsaem.4c02869","DOIUrl":null,"url":null,"abstract":"<p >Ternary organic solar cells (OSCs) based on all-small molecules represent a promising avenue toward high-performance and stable devices. In this study, we introduce an efficient all-small-molecule ternary OSC, incorporating 20 wt % of the medium bandgap electron acceptor DBTBT-IC into the CA-CO:Y6 binary blend, resulting in a notable power conversion efficiency (PCE) of 15.42%. This marks an improvement of ∼25% compared to the CA-CO:Y6 binary device’s (PCE 12.27%). Moreover, the large molecular electrostatic potential (ESP) difference between the CA-CO donor and Y6 acceptor reveals efficient charge transfer, creating an induced intermolecular electric field to facilitate charge generation within the materials. The ternary device also exhibits lower nonradiative energy loss than binary devices. This work highlights the significance of simple coumarin-based donors in enhancing the performance of OSCs by promoting charge carrier transport while minimizing recombination.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"8 4","pages":"2335–2345 2335–2345"},"PeriodicalIF":5.4000,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaem.4c02869","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Ternary organic solar cells (OSCs) based on all-small molecules represent a promising avenue toward high-performance and stable devices. In this study, we introduce an efficient all-small-molecule ternary OSC, incorporating 20 wt % of the medium bandgap electron acceptor DBTBT-IC into the CA-CO:Y6 binary blend, resulting in a notable power conversion efficiency (PCE) of 15.42%. This marks an improvement of ∼25% compared to the CA-CO:Y6 binary device’s (PCE 12.27%). Moreover, the large molecular electrostatic potential (ESP) difference between the CA-CO donor and Y6 acceptor reveals efficient charge transfer, creating an induced intermolecular electric field to facilitate charge generation within the materials. The ternary device also exhibits lower nonradiative energy loss than binary devices. This work highlights the significance of simple coumarin-based donors in enhancing the performance of OSCs by promoting charge carrier transport while minimizing recombination.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.