| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 가을 (10/06 ~ 10/07, 김대중 컨벤션센터) |
| 권호 |
36권 2호 |
| 발표분야 |
유기전자소자용 소재 및 소자(분자전자소재 부문위원회) |
| 제목 |
Influence of Controlled Acidity of Hole-Collecting Buffer Layers on the Performance and Lifetime of Polymer:Fullerene Solar Cells |
| 초록 |
Recently the power conversion efficiency of polymer:fullerene solar cells has reached ~8 % due to the optimization of bulk heterojunction films with new conjugated polymers.However,there is still controversy on the stability and lifetime of polymer:fullerene solar cells though further improved stability has been reported for the inverted type solar cells. Hence we attempted to directly solve the PEDOT:PSS-induced degradation problem by controlling the acidity of PEDOT:PSS through the addition of a strong base to the PEDOT:PSS solution.The results showed that a small addition of strong base removed 23% of the sulfonic acid groups but did not change the device performance,even though further addition degraded the device performance owing to an increased sheet resistance and lowered work function,as well as a changed surface morphology.The detailed results will be discussed in this presentation. |
| 저자 |
이혜나1, 김화정2, 남성호1, 우성호3, 하창식4, 이문호5, 김영규1
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| 소속 |
1경북대, 2차세대에너지(연), 3DGIST, 4부산대, 5포항공과대 |
| 키워드 |
PEDOT:PSS; Solar cells; Buffer layer; Lifetime
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| E-Mail |
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