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DC Field | Value | Language |
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dc.citation.endPage | 10854 | - |
dc.citation.number | 17 | - |
dc.citation.startPage | 10846 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 9 | - |
dc.contributor.author | Park, Jun-Mo | - |
dc.contributor.author | Lee, Tack Ho | - |
dc.contributor.author | Kim, Dong Won | - |
dc.contributor.author | Kim, Jae Won | - |
dc.contributor.author | Chung, Hae Yeon | - |
dc.contributor.author | Heo, Jungwoo | - |
dc.contributor.author | Park, Song Yi | - |
dc.contributor.author | Yoon, Won Sik | - |
dc.contributor.author | Kim, Jin Young | - |
dc.contributor.author | Park, Soo Young | - |
dc.date.accessioned | 2023-12-21T15:50:37Z | - |
dc.date.available | 2023-12-21T15:50:37Z | - |
dc.date.created | 2021-05-14 | - |
dc.date.issued | 2021-05 | - |
dc.description.abstract | Conjugated polymers with a high absorption coefficient and high charge mobility are essential for high power conversion efficiency (PCE) and large area roll-to-roll processing of polymer solar cells. However, only a few conjugated polymers with both properties have been reported so far. Recently, we have reported an innovative naphthyridinedione (NTD)-based highly crystalline polymer (PNTDT-2F2T) with an exceptionally high absorption coefficient (alpha = 1.6 x 10(5) cm(-1)) and charge mobility (mu(h) = 8.6 x 10(-3) cm(2) V-1 s(-1)), which showed 9.6% PCE with a thick active layer (210 nm). However, the PCE decreases considerably to 7.4% with a thin active layer (80 nm) due to a reduction in the photocurrent owing to the still smaller absorption coefficient and rather larger crystalline domain size of PNTDT-2F2T. To develop a thickness-tolerant high efficiency polymer solar cell aiming at low-cost commercial manufacture, we report a newly designed NTD-based conjugated polymer (PNTD4T-2FB) with an increased absorption coefficient and controlled crystallinity that contains 1,4-difluorobenzene units, in this work. The smaller crystal size (crystalline coherence length (CCL) = 2.20 nm) and higher absorption coefficient (alpha = 2.0 x 10(5) cm(-1)) of PNTD4T-2FB compared to those of PNTDT-2F2T (CCL = 3.19 nm) facilitate charge generation while maintaining a high carrier mobility (mu(h) = 2.92 x 10(-3) cm(2) V-1 s(-1)). Consequently, the PNTD4T-2FB based device shows improved PCE (10.1%) with a thicker active layer (330 nm) while keeping a PCE of 9.2% for an active layer of only 70 nm thickness as well. Comparative analysis with PNTD4T-B (which does not contain fluorine) suggests that the superior characteristics of PNTD4T-2FB are attributable to the slightly twisted but rigid backbone arising from the S-F intra-molecular non-bonding interaction between 1,2-difluorobenzene and thiophene. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.9, no.17, pp.10846 - 10854 | - |
dc.identifier.doi | 10.1039/d1ta01362a | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-85105572944 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/52925 | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2021/TA/D1TA01362A#!divAbstract | - |
dc.identifier.wosid | 000641866600001 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Designing a naphthyridinedione-based conjugated polymer for thickness-tolerant high efficiency polymer solar cells | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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