Proceedings of the Korean Vacuum Society Conference (한국진공학회:학술대회논문집)
- 2015.08a
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- Pages.243.1-243.1
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- 2015
Optimization and improvement about DSSCs efficiency as thickness of TiO2 photoelectrode with Al back-reflector
- Lee, Yong-Min ;
- Hwang, Gi-Hwan ;
- Seo, Hyeon-Jin ;
- Choe, Hyeon-Ji ;
- Lee, Yul-Hui ;
- Kim, Dong-In ;
- Nam, Sang-Hun ;
- Bu, Jin-Hyo
- 이용민 (성균관대학교 화학과) ;
- 황기환 (성균관대학교 화학과) ;
- 서현진 (성균관대학교 화학과) ;
- 최현지 (성균관대학교 화학과) ;
- 이율희 (성균관대학교 화학과) ;
- 김동인 (성균관대학교 화학과) ;
- 남상훈 (성균관대학교 기초과학연구소) ;
- 부진효 (성균관대학교 화학과)
- Published : 2015.08.24
Abstract
To replace the based on silicon solar cells, the third generation solar cells, Dye-sensitized solar cells (DSSCs), is low fabrication than silicon solar cells, environmentally friendly and can be applied to various field. For this reason, the DSSCs have been continuously researched. But DSSCs have one drawback that is the low power conversion efficiency (PCE) than silicon solar cells. To solve the problem, we used the backr-eflector the Al foil that can be easily obtained from the surrounding in order to improve the efficiency of the DSSCs. Easily detachable Al foil back-reflector increases the photocurrent by enhancing the harvesting light because the discarded light is reused. It also leads to enhance the power conversion efficiency (PCE). In addition, we compared with the efficiency of the DSSCs that is applied and does not be applied with back-reflector according to the thickness of the TiO2 photoelectrode. When the back-reflector is applied to DSSCs, the photocurrent is increased. It leads to affect the efficiency. We used to solar simulator and Electrochemical Impedance Spectroscopy (EIS) to confirm the PCE and resistance. The DSSCs were also measured by External Quantum effect (EQE). At the same time, FE-SEM and XRD were used to confirm the thickness of layer and crystal structural of photoelectrode.