tailieunhanh - SOLAR CELLS – DYE-SENSITIZED DEVICES_2

Most solar modules used in photovoltaics are currently produced from crystalline and polycrystalline silicon wafers, the representatives of so-called first generation of solar cells. This type of devices are among the most efficient but at the same time the most expensive since they require the highest purity silicon and involve a lot of stages of complicated processes in their manufacture. | 11 Development of Dye-Sensitized Solar Cell for High Conversion Efficiency Yongwoo Kim1 and Deugwoo Lee2 1Korea Industrial Complex Corporation 2Pusan National University Korea 1. Introduction The Solar cell energy is presently promising because of oil inflation fuel exhaustion global warming and space development. Many advanced countries rapidly develop the solar cell energy under a nation enterprise. Particularly dye-sensitized solar cell DSC the 3rd generation solar cell has low-cost of manufactures about 1 3 1 5 times compared with the silicon solar cell which encourages the research globally. Dye-sensitized Solar Cell DSC is evaluated to be low-cost technology as the manufacturing DSC is more inexpensive 5 times than producing Silicon Solar Cell. Currently the best conversion efficiency is 11 the tile-shaped modules are being produced in STI Austria. Moreover the efficiency to increase over 15 and the process of fabricating DSC for commercialization are attempted to be highly researched. Recently production of nano-particles becomes available due to development of nanotechnologies. Since they have broad contact area comparing to the existing compound materials being generally used and increased mechanical thermal and electrical characteristics etc. they are attracting public attention as a new material to implement various functions. Especially nano-tube has more excellent mechanical and electrical characteristics than normal particle type materials. And it is known that the smaller its diameter . aspect ratio is the better its characteristics are. Accordingly a lot of researches related to nano-compound materials have been being progressed nationally and internationally Gojny et al. 2003 Jijima 1991 Chang et al. 2001 . It is new methods to improve light conversion efficiency using several approaches such as nanocrystalline CNT TiO2 hybrid material reflect mirror with micro pyramid structure and concentrating light with Fresnel lens. shows the .

• Hoá dầu
• Nano Structural
• Surface Engineering
• Dye Sensitized
• Metal Oxides
• Optical Properties
• Microscale Meshes