制备TiO2保护薄膜於ITO玻璃基板暨应用於第三代-建国科技大学.DOCVIP

製備TiO2保護薄膜於ITO玻璃基板暨應用於第三代太陽能電池之特性研究 白世南 建國科技大學電子工程系暨研究所 彰化市介壽北路1號摘要。關鍵詞：太陽能電池hr-Nan Bai Jhou-Cheng Hsu Department of Electronic Engineering and Institute of Electronic, Chienkuo Technology University, Changhua City 500, Taiwan Abstract TiO2 thin films have been fabricated by sol-gel spin coating technology as protective material on ITO substrate. In the manufacture process, the Ti(OC4H9)4 was used as precursor, glacial acetic acid the peptization. Meanwhile, the pH value was recorder after the sol solution prepared done. The surface morphology and roughness of the TiO2 thin films were observed by FE-SEM and AFM; the crystalline properties and orientation were analyzed using XRD patterns; the transmittance of the thin films were measured by UV-visible-NIF spectrometer. From the experimental results, it is found that the microstructure and optoelectronic properties of the TiO2 thin films depend on the amount of glacial acetic acid in the sol solution. The thickness of the TiO2 films decreases with increasing the glacial acetic acid. This result causes the variation of transmittance. Moreover, the surface of the TiO2 thin films becomes more smoothly as the glacial acetic acid increase. The surface roughness of the films can be controlled and kept under 1nm. In this study, the characteristics of sol solution could be modified by the amount of glacial acetic acid and effective improve the surface morphology and microstructure of the TiO2 thin films. Therefore, the TiO2 films will be applied in the future as the compact layer, which isolated the contact between transparent conductive ITO electrode and electrolyte, in order to reduce the inverse reaction and then enhance the energy transformation for the 3rd generation solar cells application. Key words：Sol-gel method, TiO2 thin films, Compact layer, 3rd generation solar cells 一、前言 太陽能電池之應用起源於光電效應，早期由於價格昂貴，僅應用於軍事國防與航太領域，其轉換能源汲取於太陽光子能量，符合近代城市生態與自然生態之共存，以太陽光為轉換源具有無轉換汙染、適當環境條件下可長期使用，成為各個研究領域致力於發展之技術。同時，低製程成本、高轉換效率，成為其