Authigenic buffer layer: Tuning surface work function in all polymer blend solar cells
文献类型：期刊论文
| 作者 | Zhang, Rui1,2; Li, Hongai3; Qu, Yi3; Zhang, Jidong1; Liu, Jiangang1; Han, Yanchun1 |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2017-12-20 |
| 卷号 | 535页码:149-156 |
| 关键词 | Authigenic Buffer Layer Soaking Polymer Solar Cell |
| ISSN号 | 0927-7757 |
| DOI | 10.1016/j.colsurfa.2017.09.040 |
| 英文摘要 | Controlling interfacial composition between the electrodes and the photoactive layer is significant for adjusting the work function and improving the device performance of organic solar cells. Herein, an authigenic buffer layer is generated at the polymer blends surface of poly[4,8-bis(5-(2-ethylhexyl) thiophen-2-yl) benzo[1,2-b: 4,5-b'] dithiophe-ne-alt-3-flu- orothieno[3,4-b] thiophene-2-carboxy-late] (PTB7-Th) as donor, poly[[N, N-bis(2-oc-tyldodecyl)-napthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5, 5'-(2,2'-bithiophene)] (N2200) as acceptor by soaking in poor solvent methanol. The authigenic buffer layer is mainly composed of N2200 molecule since it migrates out from the bulk phase more effectively than PTB7-Th molecule because of the difference of interaction between methanol and N2200, PTB7-Th (strong molecular polarity between N2200 and methanol). X-ray photoelectron spectroscopy (XPS) shows the content of N element increases. X-ray reflectivity (XRR) shows the thickness of neat N2200 film and the blend films were increased but the thickness of PTB7-Th film not with the increasing of methanol solvent soaking time. On the contrary, Kelvin probe force microscopy (KPFM) results show that the surface work function of blend film changes from 4.70 eV to 4.51 eV when soak into methanol for 40 s compared with pristine film, which suggests the energy barrier of the metal/organic interface decreased from 0.40 eV to 0.21 eV correspondingly. As a result, the power conversion efficiency (PCE) of all polymer solar cells based on the authigenic buffer layer was almost 20% higher than that pristine blends. |
| 语种 | 英语 |
| WOS记录号 | WOS:000413629000019 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/44993]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, Jidong; Han, Yanchun |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, 5625 Renmin St, Changchun 130022, Jilin, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Changchun Univ Sci & Technol, State Key Lab High Power Semicond Lasers, Changchun 130022, Jilin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Rui,Li, Hongai,Qu, Yi,et al. Authigenic buffer layer: Tuning surface work function in all polymer blend solar cells[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2017,535:149-156. |
| APA | Zhang, Rui,Li, Hongai,Qu, Yi,Zhang, Jidong,Liu, Jiangang,&Han, Yanchun.(2017).Authigenic buffer layer: Tuning surface work function in all polymer blend solar cells.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,535,149-156. |
| MLA | Zhang, Rui,et al."Authigenic buffer layer: Tuning surface work function in all polymer blend solar cells".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 535(2017):149-156. |
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来源：化学研究所
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