DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Jin-Woo | ko |
dc.contributor.author | Ma, Boo Soo | ko |
dc.contributor.author | Choi, Joonhyeong | ko |
dc.contributor.author | Lee, Junbok | ko |
dc.contributor.author | Lee, Seungjin | ko |
dc.contributor.author | Liao, Kin | ko |
dc.contributor.author | Lee, Wonho | ko |
dc.contributor.author | Kim, Taek-Soo | ko |
dc.contributor.author | Kim, Bumjoon J. | ko |
dc.date.accessioned | 2020-02-05T06:20:30Z | - |
dc.date.available | 2020-02-05T06:20:30Z | - |
dc.date.created | 2020-02-04 | - |
dc.date.created | 2020-02-04 | - |
dc.date.created | 2020-02-04 | - |
dc.date.created | 2020-02-04 | - |
dc.date.created | 2020-02-04 | - |
dc.date.created | 2020-02-04 | - |
dc.date.created | 2020-02-04 | - |
dc.date.issued | 2020-01 | - |
dc.identifier.citation | CHEMISTRY OF MATERIALS, v.32, no.1, pp.582 - 594 | - |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.uri | http://hdl.handle.net/10203/272090 | - |
dc.description.abstract | High tolerance regarding photovoltaic performance in terms of donor:acceptor (D:A) composition ratio is reported for all-polymer solar cells (all-PSCs), which is a crucial advantage in producing large-scale devices with high reproducibility. To understand the origin of high D:A ratio tolerance in all-PSCs, we investigate the molecular weight (MW) effects of the P(NDI2OD-T2) polymer acceptor (PA) on photovoltaic and mechanical robustness of PBDB-T:P(NDI2OD-T2) all-PSCs. Also, we compare the all-PSCs with other types of PSCs consisting of the same polymer donor but using small molecule acceptors (SMAs) including ITIC and PC71BM. We observe that the D:A ratio tolerances of both the photovoltaic and mechanical properties are highly dependent on the P-A MW and the acceptor material types. For example, at a high D:A ratio of 15:1, all-PSCs using high MW P-A (number-average molecular weight (M-n) = 97 kg mol(-1)) exhibit 13 times higher normalized power conversion efficiency (PCE) than all-PSCs using low MW P-A (M-n = 11 kg mol(-1)), and 20 times higher than ITIC-based PSCs. In addition, the electron mobilities in all-PSCs based on high MW PA are well-maintained even at very high D:A ratio, whereas the electron mobilities in low MW P-A all-PSCs and SMA-based PSCs decrease by 3- and 4-orders of magnitude, respectively, when the D:A ratio increases from 1:1 to 15:1. Thus, we suggest that the formation of tie molecules and chain entanglements by long polymer chains bridging adjacent crystalline domains is the main origin of excellent D:A tolerance in both mechanical robustness and photovoltaic performance. This work provides an important material design guideline for the reproducible production of flexible and stretchable all-PSCs. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Origin of the High Donor Acceptor Composition Tolerance in Device Performance and Mechanical Robustness of All-Polymer Solar Cells | - |
dc.type | Article | - |
dc.identifier.wosid | 000507721600059 | - |
dc.identifier.scopusid | 2-s2.0-85078296008 | - |
dc.type.rims | ART | - |
dc.citation.volume | 32 | - |
dc.citation.issue | 1 | - |
dc.citation.beginningpage | 582 | - |
dc.citation.endingpage | 594 | - |
dc.citation.publicationname | CHEMISTRY OF MATERIALS | - |
dc.identifier.doi | 10.1021/acs.chemmater.9b04464 | - |
dc.contributor.localauthor | Kim, Taek-Soo | - |
dc.contributor.localauthor | Kim, Bumjoon J. | - |
dc.contributor.nonIdAuthor | Lee, Junbok | - |
dc.contributor.nonIdAuthor | Liao, Kin | - |
dc.contributor.nonIdAuthor | Lee, Wonho | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | POWER CONVERSION EFFICIENCY | - |
dc.subject.keywordPlus | MOLECULAR-WEIGHT | - |
dc.subject.keywordPlus | PHOTOVOLTAIC PERFORMANCE | - |
dc.subject.keywordPlus | FULLERENE-POLYMER | - |
dc.subject.keywordPlus | CHARGE-TRANSPORT | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | AGGREGATION | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordPlus | ADDUCTS | - |
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