Reducing the confinement of PBDB-T to ITIC to improve the crystallinity of PBDB-T/ITIC blends
文献类型：期刊论文
| 作者 | Liang, Qiuju1,2; Han, Jie3; Song, Chunpeng3; Yu, Xinhong1; Smilgies, Detlef-M.4; Zhao, Kui5; Liu, Jiangang1; Han, Yanchun1 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2018-08-28 |
| 卷号 | 6期号:32页码:15610-15620 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c8ta05892j |
| 英文摘要 | The ordered aggregation of non-fullerene small molecular acceptors (SMAs) plays a key role in determining the charge transport and bimolecular recombination in polymer/SMA solar cells. However, due to the competition between crystallization and phase separation, the polymers are prone to form a network first, which inhibits the molecular diffusion of SMAs, resulting in weak crystallinity of SMAs. Here, we demonstrated a sequential crystallization method for high performance PBDB-T/ITIC solar cells with much improved crystallinity of ITIC. By tuning the sequence of thermal annealing (TA) and solvent vapor annealing (SVA), sequential crystallization of ITIC and PBDB-T can be fine controlled to grow a highly crystalline ITIC and PBDB-T network. The crystallization kinetics results indicate that when the crystallization of ITIC occurred prior to the formation of the PBDB-T crystallized network, the crystallinity of ITIC is significantly improved due to high molecular diffusion. However, if the crystallization of PBDB-T occurred first, the diffusion of ITIC was restricted by the crystalline network of PBDB-T, resulting in a low crystallinity of ITIC. The enhanced crystallinity of ITIC is beneficial to the electron transport and suppressed the bimolecular recombination, which helps boost the device performance from 8.14% to 10.95%. This work demonstrates that manipulation of the crystallization sequence of the donor and acceptor may be key to further boost the efficiency of polymer/SMA solar cells. |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000442385800016 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/42341]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhao, Kui; Liu, Jiangang; Han, Yanchun |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Changchun Univ Sci & Technol, State Key Lab High Power Semicond Lasers, Changchun 130022, Jilin, Peoples R China 4.Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14850 USA 5.Shaanxi Normal Univ, Key Lab Appl Surface & Colloid Chem, Shaanxi Engn Lab Adv Energy Technol,Sch Mat Sci &, Shaanxi Key Lab Adv Energy Devices,Natl Minist Ed, Xian 710119, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, Qiuju,Han, Jie,Song, Chunpeng,et al. Reducing the confinement of PBDB-T to ITIC to improve the crystallinity of PBDB-T/ITIC blends[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(32):15610-15620. |
| APA | Liang, Qiuju.,Han, Jie.,Song, Chunpeng.,Yu, Xinhong.,Smilgies, Detlef-M..,...&Han, Yanchun.(2018).Reducing the confinement of PBDB-T to ITIC to improve the crystallinity of PBDB-T/ITIC blends.JOURNAL OF MATERIALS CHEMISTRY A,6(32),15610-15620. |
| MLA | Liang, Qiuju,et al."Reducing the confinement of PBDB-T to ITIC to improve the crystallinity of PBDB-T/ITIC blends".JOURNAL OF MATERIALS CHEMISTRY A 6.32(2018):15610-15620. |
入库方式： OAI收割
来源：化学研究所
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