Constructing the nanointerpenetrating structure of PCDTBT:PC70BM bulk heterojunction solar cells induced by aggregation of PC70BM via mixed-solvent vapor annealing
文献类型：期刊论文
| 作者 | Liu JG ; Chen L ; Gao BR ; Cao XX ; Han YC ; Xie ZY ; Wang LX |
| 刊名 | journal of materials chemistry a
 |
| 出版日期 | 2013 |
| 卷号 | 1期号:20页码:6216-6225 |
| 关键词 | NANOSCALE MORPHOLOGY HIGH-PERFORMANCE PHOTOVOLTAIC BLENDS RATIONAL DESIGN POLYMER EFFICIENCY FULLERENE RECOMBINATION TRANSPORT ENERGY |
| ISSN号 | 2050-7488 |
| 通讯作者 | liu jg |
| 中文摘要 | in this paper, mixed-solvent vapor annealing (m-sva) was proposed to improve polymer crystallinity and inhibit fullerene intercalation into polymer side chains in a poly[n-90-heptadecanyl-2,7-carbazole-alt-5,5- (4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (pcdtbt):[6,6]-phenyl-c-71-butyric acid methyl ester (pc70bm) blend system. experiments showed the optimal volume ratio of a mixed solvent, i.e., for tetrahydrofuran (thf) and carbon disulfide (cs2) vapor it is 1 : 1, and the appropriate annealing time is 5 min. after the m-sva process, out-of-plane grazing incidence x-ray diffraction (gixd) and spectroscopic ellipsometry (se) data show that pcdtbt crystals with larger size and higher crystallinity were formed due to enhanced pi-pi interaction of polymer chains; the aggregation of pc70bm was promoted as well, which inhibited the intercalation behavior, resulting in a continuous electron path and improved phase purity. the morphology transition improved the carrier mobility, in particular electron mobility. also, the recombination of a charge transfer (ct) state was reduced and the lifetime of mobile carriers was increased, which could be verified by transient-absorption (ta) spectra. as a result, the power conversion efficiency (pce) of the bhj reached 6.60%, an increase of more than 40% compared with the reference device (pce = 4.54%), even though the thickness of the active layer is up to 220 nm and the pc70bm content is as low as 71.4 wt% by weight. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000318303100015 |
| 公开日期 | 2014-04-18 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/50271]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu JG,Chen L,Gao BR,et al. Constructing the nanointerpenetrating structure of PCDTBT:PC70BM bulk heterojunction solar cells induced by aggregation of PC70BM via mixed-solvent vapor annealing[J]. journal of materials chemistry a,2013,1(20):6216-6225. |
| APA | Liu JG.,Chen L.,Gao BR.,Cao XX.,Han YC.,...&Wang LX.(2013).Constructing the nanointerpenetrating structure of PCDTBT:PC70BM bulk heterojunction solar cells induced by aggregation of PC70BM via mixed-solvent vapor annealing.journal of materials chemistry a,1(20),6216-6225. |
| MLA | Liu JG,et al."Constructing the nanointerpenetrating structure of PCDTBT:PC70BM bulk heterojunction solar cells induced by aggregation of PC70BM via mixed-solvent vapor annealing".journal of materials chemistry a 1.20(2013):6216-6225. |
入库方式： OAI收割
来源：长春应用化学研究所
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