A bi-continuous network structure of p-DTS(FBTTh2)(2)/EP-PDI via selective solvent vapor annealing
文献类型：期刊论文
| 作者 | Li, Mingguang1,2; Liang, Qiuju1,2; Zhao, Qiaoqiao1,2; Zhou, Ke1,2; Yu, Xinhong1,2; Xie, Zhiyuan1,2; Liu, Jiangang1,2; Han, Yanchun1,2 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2016-11-14 |
| 卷号 | 4期号:42页码:10095-10104 |
| 英文摘要 | A critical requirement of small molecule non-fullerene acceptor-based solar cells for efficient charge separation and collection is the formation of interconnected phase-separated domains of 10-20 nm. The phase-separation behavior of small molecule donor 7,7'-(4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b: 4,5-b'] dithiophene-2,6diyl) bis(6-fluoro-4-(5'-hexyl-[2,2'-bithiophen]-5-yl) benzo[c][1,2,5] thiadiazole) (p-DTS(FBTTh2)(2)) and acceptor N, N'-bis(1-ethylpropyl)-perylene-3,4,9,10-tetracarboxylic diimide (EP-PDI) was regulated by donor selective solvent vapor annealing (D-SVA), poor donor solvent vapor annealing (P-SVA) and thermal annealing (TA). It was found that the power conversion efficiency (PCE) was significantly improved from less than 0.2% up to 3.0% after D-SVA. In contrast, a limited improvement of PCE was obtained for P-SVA (1.9%) and TA (1.8%). The difference in the improvement of PCE values was attributed to the formation of a phase-separated structure and the regulation of crystallite sizes under different post treatments. The fibrous crystals of p-DTS(FBTTh2)(2) were formed during D-SVA treatment while the EP-PDI component was in the form of small microcrystals, thus leading to the required interconnected phase-separated structure. As a consequence, the moderate phase-separated morphology accompanied by a pure crystalline phase with a medium size could maximize the carrier transport process without compromising exciton separation efficiency, and thus contributes to the final optimal PCE value of up to 3.0% under D-SVA. For P-SVA or TA treatment, we only observed a significant enhancement of the crystallinity of both p-DTS(FBTTh2)(2) and EP-PDI components, leading to remarkable film coarsening, or even undesired large phase separation, which is detrimental to the exciton diffusion as well as exciton separation processes. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35142]  |
| 专题 | 化学研究所_高分子物理与化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, 5625 Renmin St, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Mingguang,Liang, Qiuju,Zhao, Qiaoqiao,et al. A bi-continuous network structure of p-DTS(FBTTh2)(2)/EP-PDI via selective solvent vapor annealing[J]. JOURNAL OF MATERIALS CHEMISTRY C,2016,4(42):10095-10104. |
| APA | Li, Mingguang.,Liang, Qiuju.,Zhao, Qiaoqiao.,Zhou, Ke.,Yu, Xinhong.,...&Han, Yanchun.(2016).A bi-continuous network structure of p-DTS(FBTTh2)(2)/EP-PDI via selective solvent vapor annealing.JOURNAL OF MATERIALS CHEMISTRY C,4(42),10095-10104. |
| MLA | Li, Mingguang,et al."A bi-continuous network structure of p-DTS(FBTTh2)(2)/EP-PDI via selective solvent vapor annealing".JOURNAL OF MATERIALS CHEMISTRY C 4.42(2016):10095-10104. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。