Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jiang, Jian-Ming | en_US |
dc.contributor.author | Raghunath, Putikam | en_US |
dc.contributor.author | Lin, Hsi-Kuei | en_US |
dc.contributor.author | Lin, Yu-Che | en_US |
dc.contributor.author | Lin, M. C. | en_US |
dc.contributor.author | Wei, Kung-Hwa | en_US |
dc.date.accessioned | 2015-07-21T08:28:09Z | - |
dc.date.available | 2015-07-21T08:28:09Z | - |
dc.date.issued | 2014-10-28 | en_US |
dc.identifier.issn | 0024-9297 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1021/ma501720k | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/123960 | - |
dc.description.abstract | We synthesized and characterized a series of novel two-dimensional Se-atom-substituted donor (D)-p-acceptor (A) conjugated polymersPBDTTTBO, PBDTTTBS, PBDTTSBO, PBDTSTBO, PBDTTSBS, PBDTSTBS, PBDTSSBO, and PBDTSSBSfeaturing benzodithiophene (BDT) as the donor, thiophene (T) as the p-bridge, and 2,1,3-benzooxadiazole (BO) as the acceptor with different number of Se atoms at different p-conjugated locations, including the pi-bridge, side chain, and electron-withdrawing units. We then systematically investigated the effect of different locations and the number of Se atoms in these two-dimensional conjugated polymers on the structural, optical, and electronics such as band-gap energies of the resulting polymers, as determined through quantum-chemical calculations, UVvis absorption spectra, and grazing-incidence X-ray diffraction. We found that through the rational structural modification of the 2-D conjugated Se-substituted polymers the resulting PCEs could vary over 3-fold (from 2.4 to 7.6%), highlighting the importance of careful selection of appropriate chemical structures such as the location of Se atoms when designing efficient D-p-A polymers for use in solar cells. Among these tested BO-containing polymers, PBDTSTBO that has moderate band gaps and good open-circuit voltages (up to 0.86 V) when mixed with PC71BM (1:2, w/w) provided the highest power conversion efficiency (7.6%) in a single-junction polymer solar cell, suggesting that these polymers have potential applicability as donor materials in the bulk heterojunction polymer solar cells. | en_US |
dc.language.iso | en_US | en_US |
dc.title | Location and Number of Selenium Atoms in Two-Dimensional Conjugated Polymers Affect Their Band-Gap Energies and Photovoltaic Performance | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1021/ma501720k | en_US |
dc.identifier.journal | MACROMOLECULES | en_US |
dc.citation.volume | 47 | en_US |
dc.citation.issue | 20 | en_US |
dc.citation.spage | 7070 | en_US |
dc.citation.epage | 7080 | en_US |
dc.contributor.department | 材料科學與工程學系 | zh_TW |
dc.contributor.department | 應用化學系 | zh_TW |
dc.contributor.department | Department of Materials Science and Engineering | en_US |
dc.contributor.department | Department of Applied Chemistry | en_US |
dc.identifier.wosnumber | WOS:000343949500009 | en_US |
dc.citation.woscount | 7 | en_US |
Appears in Collections: | Articles |