二氧化鈦/氧化亞銅光電極之特性探討

本研究利用電化學沉積法製作二氧化鈦/氧化亞銅複合光電極並應用於太陽能製氫系統，於可見光下仍具有光電化學效應。吾人利用電化學沉積法沉積出面心立方及樹枝狀兩種結晶型態之氧化亞銅光電極。經甫儀器分析，利用修飾處理可以提升二氧化鈦光電極之光電化學效能。面心立方結晶之氧化亞銅為p-type半導體，而樹枝狀結晶之氧化亞銅為n-type半導體，兩者均能吸收可見光。此外，相較於純二氧化鈦，二氧化鈦/氧化亞銅複合光電極於可見光下有較佳的光電化學特性。

關鍵字

電化學沉積法；二氧化鈦；氧化亞銅

並列摘要

In this study, we used electrochemical deposition to prepare titanium dioxide/cuprous oxide composite electrodes and applied in solar hydrogen system. The composite electrodes demonstrate the photo-electrochemical effect in water during the visible light irradiation. Two kinds of cuprous oxide electrodes in different crystalline, faceted and dendritic structures, were prepared by electrochemical deposition. After analysis, modification of titanium dioxide electrodes can enhance the photo-electrochemical performance. Cuprous oxide of faceted crystal is a p-type semiconductor; whereas, the dendritic crystal is a n-type semiconductor. Both types of the cuprous oxide samples can absorb visible light. Furthermore, the titanium dioxide / cuprous oxide composite electrode can improve the photo-electrochemical performance in the visible light irradiation, compared to titanium dioxide electrodes.

並列關鍵字

Electrochemical deposition ； TiO2 ； Cu2O

參考文獻

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國際替代計量

二氧化鈦/氧化亞銅光電極之特性探討

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