| 학회 | 한국재료학회 |
| 학술대회 | 2014년 봄 (05/15 ~ 05/16, 창원컨벤션센터) |
| 권호 | 20권 1호 |
| 발표분야 | B. 나노 재료(Nanomaterials) |
| 제목 | Energy Harvesting of Dye-sensitized Solar Cells Assisted with Ti-mesh and Phosphor Materials |
| 초록 | We used the Ti-meshes for both the photoanode and counter electrode of the dye-sensitized solar cells (DSSCs) to improve the flexibility and conductivity of electrodes[1,2]. This mesh type electrode showed good transparency and high bendability when subjected to an external force. We demonstrated the advantages of the cells using such electrodes compared to traditional transparent conducting oxide-based electrodes and backside illuminated DSSCs, such as low sheet resistance, elevated photo-induced current and enhanced sunlight utilization. The overall efficiency of the best cells was approximately 5.3% under standard air mass 1.5 global (AM 1.5 G) solar condition. Furthermore, the DSSCs showed an efficiency of approximately 3.15% due to the all Ti-mesh type electrodes even after illuminating from the back side. We also modified the TiO2 nanoparticle based dye-sensitized solar cells (DSSCs) by depositing a layer of long-persistent phosphor SrAl2O4:Eu2+, Dy3+ on top of the TiO2 nanoparticle layer to prepare working electrodes of DSSCs[3]. SrAl2O4:Eu2+, Dy3+ red-shifted short UV wavelengths into the main absorption range of the dye commonly used in DSSCs. The SrAl2O4:Eu2+, Dy3+ layer also acted as a light-scattering layer to reduce the loss of visible light. IPCE measurement showed that application of such phosphor materials effectively enhanced light-harvesting. An overall 13% improvement in the conversion efficiency of modified DSSCs was achieved due to the presence of the phosphor layer. References [1] Weizhen He, Jijun Qiu, Fuwei Zhuge, Xiaomin Li, Jae-Ho Lee, Yang-Do Kim, Hyung-Kook Kim and Yoon-Hwae Hwang, Nanotechnology, 23, 225602 (2012). [2] Yoon-Hwae Hwang, Weizhen He, and Hyung-Kook Kim, Korea Patent, No. 10-2011-0029239 (24 May 2013). [3] Weizhen He, Atabaev Timur, Hyung-Kook Kim, and Yoon-Hwae Hwang, Journal of Physical Chemistry C, Accepted. |
| 저자 | Weizhen He1, Atabaev Timur2, Hyung-Kook Kim3, Yoon-Hwae Hwang4 |
| 소속 | 1Department of Nano Fusion Technology, 2Pusan National Univ., 3Busan 609-735, 4South Korea |
| 키워드 | |
