| 학회 | 한국공업화학회 |
| 학술대회 | 2010년 봄 (05/13 ~ 05/14, BEXCO(부산)) |
| 권호 | 14권 1호 |
| 발표분야 | Solar Cell |
| 제목 | Printed Solar Cells Dye-Sensitized Solar Cells and CuInS2(Se2) Solar Cells |
| 초록 | In order to establish cost-effective renewable energy system, solar cells have to be fabricated by non-vacuum method.In this report, two types of printed solar cells will be introduced: dye-sensitized solar cells and CuInS2(Se2) solar cells. Dye-sensitized solar cells (DSCs), which can be fabricated from low-cost materials (TiO2, dye, etc.) using a non-vacuum printing system, have attracted academic and industrial attention. The performance of DSCs mainly depends on the dye used as a sensitizer. If inexpensive and harmless natural dyes that are used as food pigments can be used for DSCs, these problems can be solved. High availability and low cost are key advantages of natural dyes that can be easily and safely extracted from plants without requiring complex synthetic procedures. In this study, a food pigment (Monascus yellow) extracted from Monascus fermentations (red yeast rice) has been studied as a novel sensitizing dye for dye-sensitized solar cells (DSC). The photocurrent action spectrum was in agreement with the absorption spectrum of the dye adsorbed on a nanocrystalline-TiO2 electrode. The DSC fabrication process has been optimized in terms of the rinsing solvent used after dye adsorption and the dye-uptake duration. After optimizing nanocrystalline-TiO2 electrodes and pH conditions, the resulting maximal photovoltaic characteristics were an open-circuit voltage of 0.57 V, a short-circuit current of 6.1 mA cm-2, and a fill factor of 0.66, yielding an energy conversion efficiency of 2.3% [1]. In our laboratory, CuInSe2 and CuInS2 (CIS) solar cells have been also fabricated by non-vacuum methods: splay deposition, electrochemical deposition, and screen-printing method.The structure of solar cell is a “superstrate” type.Although the CIS layer by the every non-vacuum method is very rough, the cell can produce the significant photovoltaic effect.The photocurrent over 10 mA cm-2. Reference: [1] S. Ito, T. Saitou, H. Imahori, H. Uehara, N. Hasegawa, Energy and Environmental Science, in printing. |
| 저자 | Seigo Ito |
| 소속 | Univ. of Hyogo |
| 키워드 | Solar Cell |
