本研究將光觸媒塗佈於薄膜型光電模組表面，並將光電模組置於本校E2大樓樓頂，運用光觸媒抗污的特性，使光電模組表面能藉由光觸媒自潔效果後，與一般未塗佈光觸媒之光電模組比較，能有更良好之發電功率輸出，並針對光觸媒性能進行不同環境下之研究。
研究結果顯示，光觸媒之玻璃試片置於戶外六個月後，仍然保有良好之親水性能，且於酸環境中也能有良好之親水性能，而光電模組經光觸媒處理後，經過5個月後能高出未經光觸媒處之光電模組約1.4至8.2%之發電量。而STC試驗與光譜穿透、反射試驗中，經光觸媒塗佈之試片光譜穿透率高於一般試片且反射率低於一般試片，故使STC試驗中同片光電模組經光觸媒塗佈後，發電量上升。
未來若安裝光電模組，經光觸媒塗佈後，可節省對於光電模組表面清洗之成本，又能保持良好且穩定之發電功率，增加光電模組發電之效應。

This research uses the Photocatalyst smear on the cover of the thin film silicon PV modules, and puts the PV modules on the top of E2 building at our school, National Taiwan University Science of Technology. With the same type and model of PV modules to monitor it, which has or not smeared the Photocatalyst. Moreover, observe the influence of having or not smeared Photocatalyst to PV modules’ power generation Ratio. In addition, apply the glass specimen to detect the effect of outdoor environment on Photocatalyst, as well as the durability and hydrophilic state in different environment. Furthermore, use spectrometer to measure the penetration and reflectivity with having or not smeared Photocatalyst.
The result shows that put the Photocatalyst’s glass specimen outdoor for about six months, it still maintains in great hydrophilic state. Also, in sour environment, it still has great hydrophilic state. After the PV modules are handled through Photocatalyst, it can generate about 1.4 to 8.2% power generation, which is higher than not using the Photocatalyst after five months. However, in STC test, light transmittance and reflection test, the glass specimen which is smeared the Photocatalyst, the light transmittance can be higher than general, but the reflection is lower than general. Therefore, in STC test, we can see the power generation rises.
In the future, if we install the PV modules after smearing the Photocatalyst, it can save the cost of washing its surface, retain good and stable generation rate and increase the power generation.

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