本研究主要在探討對於已開發成功的新型太陽能電池（new solar cell, NSC）系統模型，使用不同可見光觸媒材料，以提升其系統效率。本研究針對NSC系統的光觸媒端(solar cell part, SCP)及觸媒端(fuel cell part, FCP)進行改質。光觸媒端方面，所使用的可見光觸媒材料包含經過不同熱處理溫度及氣氛的熱還原氧化石墨烯（reduced graphene oxide, rGO）、用硼氫化鈉還原的Ni / GO以及光沉積法製備的共觸媒Pt / WO3。其中，rGO光觸媒材料是藉由修飾Hummers法製備而成的氧化石墨烯(graphene oxide, GO）。觸媒端方面，改變白金濺鍍在FTO導電玻璃上的面積，降低系統電化學阻抗以改善其效率。
光觸媒材料經由可見光照射，會產生光生電子電洞對。其中光電子與電解質啟動光電化學還原反應；電洞則與電解質發生光電化學氧化反應，最後得以發電。經由恆電位儀量測NSC系統的結果，現階段以rGO_PtWO3_Pt II_T200Ar系統數據為最佳，其測得之最大開環電壓(open circuit voltage, Voc)為0.35 V，其反應面積為0.56 cm2，故經計算得到的最大短路電流密度(short circuit current density, Jsc)為6.36 x 10-3 mA/cm2，填充因子(fill factor, FF)為22.1 %，光電轉換效率(photovoltaic convert efficiency, PCE)為4.92 x 10-4%。

This study has been carried out to investigate the new solar cell (new solar sell, NSC) system model, using different visible-light photocatalyst materials to improve the efficiency of their systems. The NSC system consists of two parts i.e. photocatalyst part (solar cell part, SCP) and modified catalyst part (fuel cell part, FCP). Photocatalyst part part, all of the visible-light photocatalyst materials were synthesized using different heat treatments, different atmospheres during thermal reduction of graphene oxide (rGO), sodium borohydride reduction to reduce Ni precursor on graphene oxide (Ni/GO) and photo-deposition of catalysts prepared by Pt/WO3. In this study, rGO material was prepared via a modified Hummer's method from graphene oxide. Catalyst part side, variation of platinum sputtering area on the FTO conductive glass surface was studied in order to reduce the electrochemical resistance and increase the overall efficiency of the system.
When visible light radiate on photocatalyst materials, electron-hole pairs will be generated. The photoelectron triggers the reduction reaction of the electrolyet and the holes participate in the photo-oxidation reaction which eventulay leads to electrical power generation. After investigation by potentio-static measurement amongst several test conditions the rGO_PtWO3_Pt II_T200_Ar gave the best result with maximum VOC (open circuit voltage) at 0.35 V observed under 0.56 cm2 reaction surface area. It is found that the Jsc (short circuit current density) and FF (fill factor) were 6.36 x 10-3 mA/cm2 and 22.1% respectively, while the PCE (photovoltaic convert efficiency) was 4.92 x 10-4 %.

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