DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Wonho | ko |
dc.contributor.author | Kim, Jae Han | ko |
dc.contributor.author | Kim, Taesu | ko |
dc.contributor.author | Kim, Seonha | ko |
dc.contributor.author | Lee, Changyeon | ko |
dc.contributor.author | Kim, Jin-Seong | ko |
dc.contributor.author | Ahn, Hyungju | ko |
dc.contributor.author | Kim, Taek-Soo | ko |
dc.contributor.author | Kim, Bumjoon J. | ko |
dc.date.accessioned | 2018-04-24T06:34:45Z | - |
dc.date.available | 2018-04-24T06:34:45Z | - |
dc.date.created | 2018-04-18 | - |
dc.date.created | 2018-04-18 | - |
dc.date.created | 2018-04-18 | - |
dc.date.issued | 2018-03 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.10, pp.4494 - 4503 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/10203/241441 | - |
dc.description.abstract | In this study, we demonstrate that the introduction of small amounts of phenyl-C-71-butyric acid methyl ester (PC71BM) into all-polymer solar cells (all-PSCs) increases the photovoltaic performance without compromising mechanical properties. Ternary blend polymer solar cells (ternary-PSCs) consisting of a polymer donor (PTB7-Th) and an acceptor mixture with different weight ratios of a polymeric acceptor (P(NDI2HD-T2)) and PC71BM demonstrate the effects of PC71BM loading on the power conversion efficiency (PCE) and mechanical properties. A significant enhancement in the PCEs of ternary-PSCs, from 6.32% to 7.33%, is observed when PC71BM is added into the active layer as up to 30 wt% of the acceptor mixture. Importantly, the excellent mechanical properties (i.e., crack onset strain = 11.6%, toughness 1/4 2237 J m(-3)) of the blend films are well preserved at PC71BM loadings at or below 30 wt%. In contrast, both the PCE and the mechanical performance of the ternary-PSCs significantly decrease at higher PC71BM loadings (> 50 wt%). Detailed morphological analysis via grazing incidence X-ray scattering measurements reveals that PC71BM molecules are well-dispersed in the amorphous portion of the active layer at PC71BM loadings up to 30 wt%. Therefore, both the mechanical and photovoltaic performances of the ternary-PSCs correlate closely with their morphological behavior, particularly in terms of the mixing behavior of PC71BM with polymers. The well-dispersed PC71BM molecules in the amorphous polymer domains facilitate efficient exciton dissociation, whereas the formation of PC71BM aggregates above a critical concentration causes severe mechanical degradation of the ternary-PSCs due to the presence of weak interfaces between the brittle PC71BM and polymer domains. Therefore, the ternary blends with optimal content of polymer/fullerene acceptors represent important candidates for flexible and wearable solar cells that require both high mechanical and photovoltaic performances. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | POWER CONVERSION EFFICIENCY | - |
dc.subject | PHOTOVOLTAIC CELLS | - |
dc.subject | ORGANIC PHOTOVOLTAICS | - |
dc.subject | MOLECULAR-ORIENTATION | - |
dc.subject | ELECTRON-ACCEPTORS | - |
dc.subject | DEVICE PERFORMANCE | - |
dc.subject | MORPHOLOGY CONTROL | - |
dc.subject | THERMAL-STABILITY | - |
dc.subject | CHARGE SEPARATION | - |
dc.subject | MIXING BEHAVIOR | - |
dc.title | Mechanically robust and high-performance ternary solar cells combining the merits of all-polymer and fullerene blends | - |
dc.type | Article | - |
dc.identifier.wosid | 000428847300029 | - |
dc.identifier.scopusid | 2-s2.0-85043359953 | - |
dc.type.rims | ART | - |
dc.citation.volume | 6 | - |
dc.citation.issue | 10 | - |
dc.citation.beginningpage | 4494 | - |
dc.citation.endingpage | 4503 | - |
dc.citation.publicationname | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.identifier.doi | 10.1039/c7ta11382j | - |
dc.contributor.localauthor | Kim, Taek-Soo | - |
dc.contributor.localauthor | Kim, Bumjoon J. | - |
dc.contributor.nonIdAuthor | Kim, Seonha | - |
dc.contributor.nonIdAuthor | Ahn, Hyungju | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | POWER CONVERSION EFFICIENCY | - |
dc.subject.keywordPlus | PHOTOVOLTAIC CELLS | - |
dc.subject.keywordPlus | ORGANIC PHOTOVOLTAICS | - |
dc.subject.keywordPlus | MOLECULAR-ORIENTATION | - |
dc.subject.keywordPlus | ELECTRON-ACCEPTORS | - |
dc.subject.keywordPlus | DEVICE PERFORMANCE | - |
dc.subject.keywordPlus | MORPHOLOGY CONTROL | - |
dc.subject.keywordPlus | THERMAL-STABILITY | - |
dc.subject.keywordPlus | CHARGE SEPARATION | - |
dc.subject.keywordPlus | MIXING BEHAVIOR | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.