| Summary: | 碩士 === 國立臺北科技大學 === 機電整合研究所 === 97 === The research focused on developing photoelectric measuring techniques and measured home-made dye-sensitized nano solar cell (DSSC) as well as commercial Si based solar cell. The home-made measuring instrument of photoelectric conversion
efficiency discussed the influnce of light spectrum, temperature control, and error of output power. Spectrum of the Xe-lamp smaller than 800nm agrees to the sun in terms of the ASTM standard. Irradiance of the metal halide and fluorescent lamp are over at 450-500nm and less at 700-900nm. This paper self built a scanning spectrometer using filtering method for analysis of absorption spectrum and measured the incident photo to charge carrier generation efficiency (IPCE). Adding dye in TiO2 layer can expand the absorption spectrum of DSSCs. The results show that TiO2 alone absorbs wavelength shorter then 400nm of light and IPCE value ca. 6.4%. Adding dye in DSSC, the absorption spectrum is expanded to 500nm. The IPCE value in the ultraviolet region also increased. Some dyes cause red-shift of absorption spectrum.
In general, DSSC can not be excitated in infrared light field. The commercial Si based solar cell has good IPCE ca.10.4% at 600nm. Moreover, this work used spraying technique for TiO2 layer coating, The influence of transmittance and thickness were also discussed, and obtained the best photoelectric conversion efficiency ca. 0.17% at
68% transmittance. The Alpha-Step profilometer determined the thickness of TiO2 layer ca. 3.487μm at 68% transmittance.
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