| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 봄 (04/07 ~ 04/08, 대전컨벤션센터) |
| 권호 |
36권 1호 |
| 발표분야 |
분자전자용 소재 및 소자 |
| 제목 |
The Effects of Molecular Weight of Polymer Gate-Dielectric on the Electrical Stability of Organic Field-Effect Transistors |
| 초록 |
We here present the effect of molecular weight (MW) of polymer gate-dielectric on the bias stress stability of organic field-effect transistors (OFETs). We found that OFETs with lower MW of polymer gate-dielectric exhibited large threshold voltage shift under bias stress while there were not direct MW effects on field-effect mobilities and threshold voltages of the devices before bias stress. These results arise from polymer chain-ends acting as metastable trap-sites during bias stress. To understand the formation of metastable trap-sites at polymer chain-end, bias stress experiments were conducted with varying relative humidity. We found that water molecules incorporated into polymer chain-ends trigger the formation of metastable trap-sites and cause the degradation of bias stress stability. |
| 저자 |
최현호, 조길원
|
| 소속 |
POSTECH |
| 키워드 |
Molecular weight; Chain-end; Bias stress stability; water
|
| E-Mail |
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