Ke Xi, Yang Mengmeng, Wang Weizhe, Luo Dongxiang, Zhang Menglong
Institute of Semiconductors, South China Normal University, Guangzhou 510631, China.
School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
Materials (Basel). 2019 Aug 11;12(16):2558. doi: 10.3390/ma12162558.
In addition to the most common applications of macroporous film: Supplying a large surface area, PC-FTO (macroporous fluorine-doped tin oxide with photonic crystal structure) can be employed as a template to control the morphologies of WO for exposing a more active facet, and enhance the overall photo-electron conversion efficiency for the embedded photoactive materials under changing illumination incidence through refracting and scattering. The optical features of PC-FTO film was demonstrated by DRUVS (diffuse reflectance UV-vis spectra). Plate-like WO were directly synthesized inside the PC-FTO film as a control group photoanode, AgS quantum dots were subsequently decorated on WO to tune the light absorption range. The impact of photonic crystal film on the photoactivity of AgS/WO was demonstrated by using the photoelectrochemical current density as a function of the incidence of the simulated light source.
提供大表面积外，PC-FTO（具有光子晶体结构的大孔氟掺杂氧化锡）还可以用作模板来控制WO的形貌，以暴露出更具活性的晶面，并通过折射和散射在变化的光照入射角下提高嵌入的光活性材料的整体光电子转换效率。PC-FTO薄膜的光学特性通过漫反射紫外可见光谱（DRUVS）得以证明。作为对照组光阳极，在PC-FTO薄膜内部直接合成了片状WO，随后在WO上修饰了AgS量子点以调节光吸收范围。通过将光电流密度作为模拟光源入射角的函数，证明了光子晶体薄膜对AgS/WO光活性的影响。
