| 학회 | 한국재료학회 |
| 학술대회 | 2010년 가을 (11/11 ~ 11/12, 무주리조트) |
| 권호 | 16권 2호 |
| 발표분야 | C. Energy and the Environment Technology(에너지 및 환경재료) |
| 제목 | Effect of codeposition on the performance of tetraphenyl-dibenzoperiflanthene(DBP)-fullerene(C60) bulk-heterojunction photovoltaic devices |
| 초록 | In the field of solar cells, organic materials have been attractive for next generation solar cells because they have many advantages over Si used widely. In particular, thin film organic photovoltaic(OPV) cells employing organic small molecule materials have led to low production cost, pollution free, large-area devices, and light weight cells with flexibility. However, it has a problem of low power conversion efficiency(PCE) compared to Si-based solar PVs. Many researchers are trying to solve this problem in a variety of ways. One of the method to improve a PCE of organic solar cell(OSC), we used each DBP and C60 by means of donor and acceptor material with bulk-heterojunction structure, in the way of controlling their co-evaporation and also adjusting the thickness of donor layer(DBP). In our presentation, a small molecule OSC consisting of ITO/(D)/(D):C60/C60/BCP/Al was used and DBP, CuPc were used as a donor material in that structure. When We used DBP:C60 bulk-heterojunction on co-evaporation condition of DBP:C60(2.5:1), we finded out enhanced results compared with using CuPc at the same condition. Each improved results were open circuit voltage(Voc) of 70%, short-circuit current(Jsc) of 55% and PCE of 123%. We suggest that these results were attributed to an excellent light absorption efficiency of DBP. In addition, the higher HOMO level of DBP has an effect on these results. It makes Voc increase since energy bandgap of DBP is wider than that of CuPc as well as hole inject from active layer to anode easily. Acknowledgment This project was supported by 'The National Research Program for for Terabit Non-volatile Memory Development', sponsored by the Korean Ministry of Knowledge Economy. |
| 저자 | Seung-Muk Oh, Chang-Ro Lim, Young-Soo Choi, Dal-Ho Kim, Ji-Heon Kim, Keun-Lim Ku, Jea-Gun Park |
| 소속 | 한양대 |
| 키워드 | 유기태양전지; 태양전지; DBP; hole transfer; OSC |
