本研究主要為最適化新型太陽能電池（New Solar Cell-1, NSC1）系統之電極製備條件，藉此成功地提高NSC1之光電轉換效率並改善其長時間穩定性。本實驗室開發之NSC1之工作原理是利用其可見光光觸媒電極吸收光能後，光觸媒電極表面之光生電子-電洞對可分別與電解質溶液中的電化學活性物質進行氧化與還原反應，藉此將光能轉換成化學能，再透過NSC1內建之伽凡尼電池(Galvanic cell)進行放電。
本研究以經由離子交換法合成之CuFeO2、光沉積法合成的Ag/CuFeO2、Pt/WO3作為NSC1系統之可見光光觸媒材料，並探討不同電極製備條件下對光電轉換效率的影響• 藉由調控光觸媒漿料滴定層積量找出光觸媒電極端(Solar cell part, SCP)之最適化的滴定條件為40 μL的CuFeO2漿料和20 μL的Pt/WO3漿料;而燃料電池電極端(Fuel cell part, FCP)則利用白金觸媒漿料滴定層積法、白金濺鍍法以及混合上述兩法之程序進行製備，其中以全電極白金濺鍍(F-Pt)的製備條件得以展現較佳之電化學活性。
利用最適化的SCP端和FCP端所組裝出的NSC1系統在恆電位儀測試下，其最大開環電壓（open circuit voltage, Voc）為0.32 V。此系統之光照面積為0.56 cm2，經過計算得到的最大短路電流密度（short circuit current density, Jsc）為3.06 x 10-3 mA/cm2，且填充因子（fill factor, FF）為28.57%，其太陽能光轉換率(solar cell efficency,η)為2.79 x 10-4%。將此系統與本實驗室先前未最適化的NSC1系統相比，其太陽能電池效率改善約18倍。
經最適化後的NSC1系統在時間長達2500秒的穩定性測試中，表現出優異的穩定性，經14次的開關燈測試下Voc皆維持一定值，Voc的改變率幾乎為0。

This present work successfully optimized the fabrication condtions of the new solar cell (New Solar Cell-1, NSC1), which has been devolped in this reaserch group since 2011, thereby increasing the photon-to-current conversion efficiency and improving the long-term stability of it. Visible-light-driven photocatalyst CuFeO2 powder synthisized by ion-exchange method and visible-light-driven photocatalyst WO3 powder with Pt cocatalyst loaded via photodeposition served as the photocathode and the photoanode of the NSC-1, respectively. The absorption range of the as-prepared photocatalysts in this research covers almost the entire solar spectrum. The electron-hole pairs, generated while the photocatalyst are exposed under solar light, are capable of reacting electrochemical species in the electrolyte of two distinct chambers, leading the occurence of reduction and oxidation in the electrolytes to fuel the intrinsic galvanic cell within the NSC-1 for power generation.
The optimization of the NSC-1 system in this reaserch focuses on the fabrication condtions of the electrodes. By minipulating the amount of dropped-coating photocatalyst sluury on FTO substrate, which serves as the solar cell part, SCP, and utilizing sputtering coating Pt on FTO substrate, which serves as the fuel cell part, FCP, for the hightest solar cell efficency, this present work conclued that the dropped-coating 40 μL slurry of CuFeO2 and the dropped-printing 20 μL slurry of Pt/WO3 on the SCP, meanwhile the fully coverage Pt on FTO prepared by sputtering coating served as the FCP, offered the optimized fabrication condtions for the NSC-1.
After investigation by potential static equipment among the NSC-1 system results, 0.32 V in the open circuit voltage was observed under the exposed area of 0.56 cm2. It was found that the short circuit current density and filling factor were 3.06 x 10-3 mA/cm2 and 28.57%, respectively. The calculated solar cell efficiency of the NSC-1 device was 2.79 x 10-4%, which was higher than that of the pre-work NSC system by 18 times.
Not only was the improvment of NSC systme on the solar cell efficiency, but it was significantly on the long term stability test. After 2500-seconds operation in which the incident light had been chopped repeatly for 14 times, the photovoltaic responds of the optimized NSC-1 remained extremely stable. That is, nearly no decay in Voc of the optimzed NSC-1 was observed.

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