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, Jiangang; Chen, Liang; Gao, Bingrong; Cao, Xinxiu; Han, Yanchun; Xie, Zhiyuan; Wang, Lixiang |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2013 |
| 卷号 | 1期号:20页码:6216-6225 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c3ta10629b |
| 英文摘要 | 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000318303100015 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46477]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu, Jiangang |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jiangang,Chen, Liang,Gao, Bingrong,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, Jiangang.,Chen, Liang.,Gao, Bingrong.,Cao, Xinxiu.,Han, Yanchun.,...&Wang, Lixiang.(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, Jiangang,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：化学研究所
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