| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Controlling the Band Structure of Hybrid Solar Cell and Transistor Devices via Manipulation of Anion Composition in Interfacial Electrolyte Layers |
| 초록 |
We’ve investigated a series of cationic polyelectrolytes (PEs) based on a polyethylenimine (PEI) backbone with a variety of counterions, including Br I- and BIm4-, as interfacial layers in the cathodes of solar cells and source-drain contacts of field-effect transistor (FET) devices to improve the power conversion efficiency (PCE) and device performance. This series of PEs with different counterions form electric dipoles at junctions with metal electrodes, allowing the energy levels and work function (WF) of to be controlled. Using this approach, the PCE of organic solar cells could be improved from 1.05% to 6.77% while the charge carrier mobility, on/off ratio and performance of FET devices could be improved, demonstrating the utility of PEs. This study demonstrates a strategy to utilize synthetically accessible polyelectrolytes substituted with various ions to fine-tune the band structure of semiconducting devices. |
| 저자 |
Ju Hwan Kang1, Yu Jung Park2, Heekyung Hwang1, Jung Hwa Seo2, Bright Walker3
|
| 소속 |
1Department of Materials Physics, 2Dong-A Univ., 3Department of Chemistry |
| 키워드 |
- |
| E-Mail |
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