Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Liao, Ming-Hung | en_US |
dc.contributor.author | Lai, Yin-Yu | en_US |
dc.contributor.author | Lai, Yu-Ying | en_US |
dc.contributor.author | Chen, Yen-Ting | en_US |
dc.contributor.author | Tsai, Che-En | en_US |
dc.contributor.author | Liang, Wei-Wei | en_US |
dc.contributor.author | Cheng, Yen-Ju | en_US |
dc.date.accessioned | 2014-12-08T15:34:29Z | - |
dc.date.available | 2014-12-08T15:34:29Z | - |
dc.date.issued | 2014-01-22 | en_US |
dc.identifier.issn | 1944-8244 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1021/am404485t | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/23588 | - |
dc.description.abstract | C-60 bis-adduct containing a mixture of regio-isomers with different LUMO energy levels and steric geometries could greatly affect the morphological and bulk properties. To investigate the regio-isomer effect on solar cell performance, we have successfully designed and synthesized a regio-selective 4-acetatephenyl-4'-methylphenylmethano C-60 bis-adduct (S-APM-CBA) by "tether-directed remote functionalization" strategy and a random 4-acetatephenyl-4'-methylphenylmethano C-60 bis-adduct denoted as R-APM-CBA by traditional cyclopropanation. The dramatic reduction in the number of regio-isomers in S-APM-CBA is confirmed by the H-1 NMR and HPLC measurements and theoretical calculation. Compared to the R-APM-CBA-based device with a J(sc) of 6.63 mA/cm(2), an FF of 44.3% and a PCE of 2.46%, the device using S-APM-CBA yielded a much lower J(sc) of 1.48 mA/cm(2), an FF of 32.2%, and a PCE of 0.38%. Consistently, the electron-only device using S-AMP-CBA exhibited lower electron mobility than the R-AMP-CBA-based device. These results imply that the electronic shallow-trap effect ascribed to the LUMO energy variations turned out to be insignificant in the AMP-CBA system. The lower efficiency and mobility of S-AMP-CBA might due to the assumption that the most probable trans-4-III isomer in S-AMP-CBA prevents the intermolecular facial contact of fullerenes, thereby hindering the electron transporting. Furthermore, the nanomorphology of S-AMP-CBA and R-AMP-CBA active layers could be different because of their different three-dimensional structures. This research demonstrated that steric effect of regio-isomers in a given C-60 bis-adduct is more crucial than electronic shallow-trap effect. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | regioisomers | en_US |
dc.subject | bis-adducts | en_US |
dc.subject | tether | en_US |
dc.subject | bulk-heterojunction | en_US |
dc.subject | solar cells | en_US |
dc.subject | shallow-trap effect | en_US |
dc.title | Reducing Regioisomers of Fullerene-Bisadducts by Tether-Directed Remote Functionalization: Investigation of Electronically and Sterically Isomeric Effects on Bulk-Heterojunction Solar Cells | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1021/am404485t | en_US |
dc.identifier.journal | ACS APPLIED MATERIALS & INTERFACES | en_US |
dc.citation.volume | 6 | en_US |
dc.citation.issue | 2 | en_US |
dc.citation.spage | 996 | en_US |
dc.citation.epage | 1004 | en_US |
dc.contributor.department | 應用化學系 | zh_TW |
dc.contributor.department | Department of Applied Chemistry | en_US |
dc.identifier.wosnumber | WOS:000330201900036 | - |
dc.citation.woscount | 0 | - |
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