Enhancement of photovoltaic performance by increasing conjugation of the acceptor unit in benzodithiophene and quinoxaline copolymers | |
Hu, Tong1,2; Han, Liangliang2; Xiao, Manjun2; Bao, Xichang2; Wang, Ting2; Sun, Mingliang1; Yang, Renqiang2 | |
2014 | |
发表期刊 | JOURNAL OF MATERIALS CHEMISTRY C |
卷号 | 2期号:38页码:8047-8053 |
摘要 | Copolymers based on benzodithiophene and quinoxaline, represented by 4,8-bis(5-(3,4,5-tris(octyloxy)-phenyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene (TOBDT) and 2,3-diphenyl-5,8-di(thiophen-2-yl)-quinoxaline (TQ1) or 10,13-bis(4-(2-ethylhexyl)thiophen-2-yl)dibenzo[a,c]phenazine (TQ2), were synthesized via a Stille coupling reaction. By increasing the conjugation in the TQ2 unit, the polymer based on TQ2 showed a narrower band gap (E-g), a lower highest occupied molecular orbital energy level and enhanced interchain pi-pi interactions. Polymer solar cells based on TQ2 showed a simultaneous enhancement of the open-circuit voltage (V-oc), short-circuit current density (J(sc)) and fill factor (FF) compared with polymer solar cells based on the TQ1 polymer. A good power conversion efficiency of 4.24% was achieved by solar cells based on the TQ2 polymer and [6,6]-phenyl-C-71-butyric acid methyl ester composite. These preliminary results indicate that increasing the acceptor unit (quinoxaline) conjugation is an effective way of improving the performance of polymer solar cells. |
文章类型 | Article |
WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
DOI | 10.1039/c4tc01440e |
关键词[WOS] | POLYMER SOLAR-CELLS ; OPEN-CIRCUIT VOLTAGE ; POWER CONVERSION EFFICIENCY ; LIGHT-EMITTING-DIODES ; POLYFLUORENE COPOLYMER ; ORGANIC PHOTOVOLTAICS ; BISADDUCT ; ELECTRON ; CATHODE ; LAYER |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Materials Science ; Physics |
WOS类目 | Materials Science, Multidisciplinary ; Physics, Applied |
WOS记录号 | WOS:000342180200008 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qibebt.ac.cn/handle/337004/6329 |
专题 | 先进有机功能材料研究组 |
作者单位 | 1.Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China |
推荐引用方式 GB/T 7714 | Hu, Tong,Han, Liangliang,Xiao, Manjun,et al. Enhancement of photovoltaic performance by increasing conjugation of the acceptor unit in benzodithiophene and quinoxaline copolymers[J]. JOURNAL OF MATERIALS CHEMISTRY C,2014,2(38):8047-8053. |
APA | Hu, Tong.,Han, Liangliang.,Xiao, Manjun.,Bao, Xichang.,Wang, Ting.,...&Yang, Renqiang.(2014).Enhancement of photovoltaic performance by increasing conjugation of the acceptor unit in benzodithiophene and quinoxaline copolymers.JOURNAL OF MATERIALS CHEMISTRY C,2(38),8047-8053. |
MLA | Hu, Tong,et al."Enhancement of photovoltaic performance by increasing conjugation of the acceptor unit in benzodithiophene and quinoxaline copolymers".JOURNAL OF MATERIALS CHEMISTRY C 2.38(2014):8047-8053. |
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