High Sensitivity of Non-Fullerene Organic Solar Cells Morphology and Performance to a Processing Additive
文献类型：期刊论文
| 作者 | Alqahtani, Obaid2,3; Lv, Jie4; Xu, Tongle4; Murcia, Victor2; Ferron, Thomas1; McAfee, Terry1,5; Grabner, Devin1; Duan, Tainan4 ; Collins, Brian A.1,2
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| 刊名 | SMALL
 |
| 出版日期 | 2022-05-12 |
| 页码 | 13 |
| 关键词 | nanomorphology sensitivity near-infrared absorbance non-fullerene small molecules organic solar cells resonant X-ray scattering |
| ISSN号 | 1613-6810 |
| DOI | 10.1002/smll.202202411 |
| 通讯作者 | Collins, Brian A.(brian.collins@wsu.edu) |
| 英文摘要 | Although solvent additives are used to optimize device performance in many novel non-fullerene acceptor (NFA) organic solar cells (OSCs), the effect of processing additives on OSC structures and functionalities can be difficult to predict. Here, two polymer-NFA OSCs with highly sensitive device performance and morphology to the most prevalent solvent additive chloronaphthalene (CN) are presented. Devices with 1% CN additive are found to nearly double device efficiencies to 10%. However, additive concentrations even slightly above optimum significantly hinder device performance due to formation of undesirable morphologies. A comprehensive analysis of device nanostructure shows that CN is critical to increasing crystallinity and optimizing phase separation up to the optimal concentration for suppressing charge recombination and maximizing performance. Here, domain purity and crystallinity are highly correlated with photocurrent and fill factors. However, this effect is in competition with uncontrolled crystallization of NFAs that occur at CN concentrations slightly above optimal. This study highlights how slight variations of solvent additives can impart detrimental effects to morphology and device performance of NFA OSCs. Therefore, successful scale-up processing of NFA-based OSCs will require extreme formulation control, a tuned NFA structure that resists runaway crystallization, or alternative methods such as additive-free fabrication. |
| 资助项目 | U.S. National Science Foundation DMR Electronic and Photonics Program[1905790] ; U.S. Department of Energy Early Career Research Program[DE-SC0017923] ; DOE Office of Science User facility[DE-AC02-05CH11231] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000793926700001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/15906]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Collins, Brian A. |
| 作者单位 | 1.Washington State Univ, Dept Phys & Astron, Pullman, WA 99164 USA 2.Washington State Univ, Mat Sci & Engn Program, Pullman, WA 99164 USA 3.Prince Sattam bin Abdulaziz Univ, Dept Phys, Alkharj 11942, Saudi Arabia 4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 5.Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA |
| 推荐引用方式 GB/T 7714 | Alqahtani, Obaid,Lv, Jie,Xu, Tongle,et al. High Sensitivity of Non-Fullerene Organic Solar Cells Morphology and Performance to a Processing Additive[J]. SMALL,2022:13. |
| APA | Alqahtani, Obaid.,Lv, Jie.,Xu, Tongle.,Murcia, Victor.,Ferron, Thomas.,...&Collins, Brian A..(2022).High Sensitivity of Non-Fullerene Organic Solar Cells Morphology and Performance to a Processing Additive.SMALL,13. |
| MLA | Alqahtani, Obaid,et al."High Sensitivity of Non-Fullerene Organic Solar Cells Morphology and Performance to a Processing Additive".SMALL (2022):13. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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