DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Jin-Woo | ko |
dc.contributor.author | Sun, Cheng | ko |
dc.contributor.author | Phan Tan Ngoc Lan | ko |
dc.contributor.author | Lee, Dong-Chan | ko |
dc.contributor.author | Tan, Zhengping | ko |
dc.contributor.author | Jeon, Hyesu | ko |
dc.contributor.author | Cho, Shinuk | ko |
dc.contributor.author | Kwon, Soon-Ki | ko |
dc.contributor.author | Kim, Yun-Hi | ko |
dc.contributor.author | Kim, Bumjoon J. | ko |
dc.date.accessioned | 2023-08-16T03:00:29Z | - |
dc.date.available | 2023-08-16T03:00:29Z | - |
dc.date.created | 2023-06-15 | - |
dc.date.issued | 2023-08 | - |
dc.identifier.citation | ENERGY & ENVIRONMENTAL SCIENCE, v.16, no.8, pp.3339 - 3349 | - |
dc.identifier.issn | 1754-5692 | - |
dc.identifier.uri | http://hdl.handle.net/10203/311570 | - |
dc.description.abstract | Although the recent development of Y-series small-molecule acceptors (SMAs) has led to a dramatic increase in the power conversion efficiency (PCE) of organic solar cells (OSCs), the operational stability (device lifetime) of OSCs is inadequate for commercialization. In this study, we develop a new trimer acceptor (TYT), consisting of three Y-based molecules linked by electron-donating spacers, to realize an OSC with high-performance (PCE > 18%) and -stability (t80% lifetime > 8000 h under 1 sun illumination, in which t80% lifetime is the time required for the PCE of the OSC to reach 80% of its initial value). We demonstrate that the trimerization approach affords an acceptor, TYT, with an upshifted lowest unoccupied molecular orbital energy level, which, in turn, affords an efficient OSC with a high open-circuit voltage (0.964 V). In addition, the glass-transition temperature (Tg) of TYT (217 °C) is significantly higher than those of monomer (MYT, Tg = 80 °C) and dimer (DYT, Tg = 127 °C) acceptors, which effectively suppresses the molecular diffusion of TYT in a blend film with a polymer donor. Accordingly, a TYT-based OSC demonstrates a high PCE (18.2%) and long t80% lifetime under 1 sun illumination (8454 h), outperforming MYT- and DYT-based OSCs that exhibit PCEs and t80% lifetimes of 16.4% and 35 h, and 17.3% and 2551 h, respectively. Therefore, this study provides important guidelines for the design of electron acceptors in achieving OSCs with high performance and stability close to a commercial level. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Trimerized small-molecule acceptors enable high-performance organic solar cells with high open-circuit voltage and prolonged life-time | - |
dc.type | Article | - |
dc.identifier.wosid | 001004947600001 | - |
dc.identifier.scopusid | 2-s2.0-85163489584 | - |
dc.type.rims | ART | - |
dc.citation.volume | 16 | - |
dc.citation.issue | 8 | - |
dc.citation.beginningpage | 3339 | - |
dc.citation.endingpage | 3349 | - |
dc.citation.publicationname | ENERGY & ENVIRONMENTAL SCIENCE | - |
dc.identifier.doi | 10.1039/D3EE00272A | - |
dc.contributor.localauthor | Kim, Bumjoon J. | - |
dc.contributor.nonIdAuthor | Sun, Cheng | - |
dc.contributor.nonIdAuthor | Jeon, Hyesu | - |
dc.contributor.nonIdAuthor | Cho, Shinuk | - |
dc.contributor.nonIdAuthor | Kwon, Soon-Ki | - |
dc.contributor.nonIdAuthor | Kim, Yun-Hi | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | EXCITON DIFFUSION | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | EFFICIENCY | - |
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