本論文利用冷壁式有機金屬化學氣相沉積法製備二氧化鈦(Titanium dioxide，TiO2) /二氧化釕(Ruthenium dioxide，RuO2)奈米複合結構。觀察其表面形貌、分析其成長優選方向及結構特性，並探討其在染料敏化太陽能電池可能之應用。
首先，控制成長速率來減少二氧化釕奈米線數量與密度，之後成長二氧化鈦奈米結構於二氧化釕奈米結構於藍寶石(Sapphire，SA)(100)、不鏽鋼基板上來對照。利用拉曼散射量測來鑑定銳鈦礦(Anatase)與金紅石(Rutile)二氧化鈦結構成長在二氧化釕奈米結構上，X光繞射儀的結果指出銳鈦礦二氧化鈦與複合結構上的銳鈦礦二氧化鈦，主要都會以[110]方向優選成長，而金紅石二氧化鈦與複合結構上的金紅石二氧化鈦，在藍寶石基板主要都會以[001]方向優選成長，場發射式電子顯微鏡(FESEM)觀察出成長在藍寶石基板上，稀疏的二氧化釕奈米結構沿著[001]方向優選成長，而不銹鋼基板成長出稀疏不規則方向的奈米結構，並藉由穿透掃描式電子顯微鏡(TEM)觀察二氧化鈦包覆整隻二氧化釕奈米結構。
之後將銳鈦礦二氧化鈦與二氧化釕複合結構成長在不銹鋼基板上，探討其在染料敏化太陽能電池可能之應用，發現銳鈦礦二氧化鈦與二氧化釕複合結構遠比二氧化鈦的光電轉化率來得高，轉化率可從0.7 %提升到1.5 %。

Nanostructural TiO2 were grown on top of RuO2 sitting on sapphire (SA)(100) and SUS substrates by metal organic chemical vapor deposition (MOCVD) using titanium-tetraisopropoxide (TTIP, Ti[OCH(CH3)2]4) and bis(ethylcyclopentadienyl) ruthenium (II) as the source reagents. The growth control conditions and the potential application of the material system as dye-sensitized solar cell were explored.
The surface morphology, structural and spectroscopic properties of the TiO2/RuO2 nanocomposites were characterized by field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), micro-Raman spectroscopy and transmission electron microscopy (TEM). FESEM micrographs showed different growth habits of TiO2/RuO2 heteronanostructures on SA(100) and SUS substrates. XRD results indicated the preferred orientation growth of A-TiO2(110)/RuO2 on SA(100) and SUS substrates, and R-TiO2(001)/RuO2(001) on SA(100) substate. The Raman spectra revealed that nanostructural anatase and/or rutile TiO2 had been deposited on the RuO2 nanocrystals. The TEM image of TiO2-deposited RuO2 nanowire (NW) showed uniform distribution and random direction of TiO2 NCs had been grown on the surface of the RuO2 NWs.
The study of possible application of using A-TiO2/RuO2 nanocomposite grown on the SUS substrate as an electrode for dye-sensitized solar cell has been carried out as well. The photoelectric conversion efficiency of A-TiO2/RuO2 nanocomposite demonstrated an increase from 0.7 to 1.5 % as compared with A-TiO2 electrodes.

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