本研究以電化學法分析分別於ITO基板預鍍Au、Pt金屬層及ITO基板對脈衝式電流電化學法成長奈米柱之影響。通以定電流密度-2mAcm-2成長氧化鋅時，相較於其他兩種基板，預鍍Au之ITO基板上有較小之充電電流且初始成核階段之電壓較形成氫氣者正，故預鍍Au之ITO基板較利於氧化鋅之成長。進一步於聲化學法(Sonochemical method)輔助下成長硫化銀奈米粒子/氧化鋅奈米線複合材料，透過X光繞射及穿透式電子顯微鏡分析，可知硫化銀是屬於多晶之Monoclinic結構，而氧化鋅為單晶Wurtzite結構，具有(002)晶面的優勢向位。此複合結構之形成機制為氧化鋅在硝酸銀及硫脲溶液中被置換為硫化銀。且由光學分析結果得知，硫化銀的尺寸愈大其起始吸收波長愈長。將此複合結構進一步應用為液態太陽能電池之光電極，以白金為對電極搭配多硫電解液，最高之太陽能電池效能為0.49%。另外，應用於固態太陽能電池之光電極時，配合硫氰化銅(CuSCN)為電洞傳導層，最高之太陽能電池效能為0.03%。

The influences of the Au- and Pt-precoated layer on pulsed current electrodeposition of ZnO nanorods on ITO substrates have been investigated using electroanalyting methods. Compared to Pt-precoated and bare ITO substrates, the Au-precoated ITO substrate has less charging current and more positive potential than that of H2 formation in the nucleation stage at a current density of -2mAcm-2. High-density ZnO nanorods are therefore deposited on the Au-precoated ITO substrate. The Ag2S nanoparticles (NPs) have been successfully prepared on ZnO nanowires (NWs) using sonochemical method to form Ag2S NP/ZnO NW composites. XRD and TEM characterizations show that Ag2S NPs are monoclinic structure and ZnO NWs sustain single crystalline wurtzite structure after the sonochemical growth of Ag2S NPs. The proposed mechanism for Ag2S NP formaiotn is ion exchanges of ZnO NWs. Optical analyses show that the absorption wavelength of Ag2S NP is getting longer as the size increases. The solar cells are fabricated using Ag2S NP/ZnO NW composites as the photoanodes. A photoelectrochemical-cell efficiency of 0.49% is achieved using the photoanode of Ag2S NP/ZnO NW composite. Moreover, a solid solar cell composed of the Ag2S NP/ZnO NW composite with a hole conducting layer of CuSCN is also fabricated. An efficiency of 0.03% is obtained.

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