| 학회 |
한국재료학회 |
| 학술대회 |
2011년 가을 (10/27 ~ 10/29, 신라대학교) |
| 권호 |
17권 2호 |
| 발표분야 |
C. Energy and the Environment Technology(에너지 및 환경재료) |
| 제목 |
Enhancing Power Conversion Efficiency of Polymer Solar Cell Using Various Blocking Layer Materials |
| 초록 |
Recently, many researches have made efforts to improve power conversion efficiency(PCE) of polymer solar cell. When polymer solar cells are photoirradiated, excitons are generated in the donor layer. These excitons separate into free charges, resulting in photocurrent generation. But if excitons don’t separate into free charges or holes move into the cathode layer, then recombination can occur. It induces decreasing of short circuit current(JSC) and PCE. To solve this problem, we investigated PCE of polymer solar cell by using exciton-hole blocking layer(EBL). EBL can block exciton and hole because HOMO level of EBL is higher than that of acceptor(Phenyl-C61-butyric acid methyl ester, PCBM). We use BCP, Bphen and TPBi as EBL materials and the thickness is 3nm~12nm. The device structures are indium tin oxide(ITO)/PEDOT:PSS/poly(3-hexylthiophene-2,5-diyl)(P3HT):PCBM/EBL/LiF/Al. We analyzed the I-V characteristic under intense simulated AM1.5G. We observed that the PCE without EBL is 1.771%. But the highest PCE with BCP, Bphen and TPBi is 5.225%, 4.909% and 3.873% each other at 3nm. Polymer solar cell with BCP, Bphen and TPBi at 3nm is better respectively by PCE 66.10%, 63.92%, 54.27% than without EBL. |
| 저자 |
Hyo-Jun Kim1, Joo-Hyeong Park2, Dal-Ho Kim1, Ji-Heon Kim2, Yeon-Hee Hwang1, Jae-Woo Shin2, Jea-Gun Park1
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| 소속 |
1Advanced Semiconductor Material Device Development Center, 2Hanyang Univ. |
| 키워드 |
Polymer solar cell; Hole Blocking layer; BCP; Bphen; TPBi
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| E-Mail |
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