Thin Film Materials Laboratory, Dept. of Physics, Shivaji University, Kolhapur, India.
Photochem Photobiol Sci. 2011 Oct;10(10):1652-8. doi: 10.1039/c1pp05084b. Epub 2011 Jul 29.
Cadmium sulfide (CdS) nanoparticle-sensitized titanium oxide nanocorals (TNC) were synthesized using a two-step deposition process. The TiO(2) nanocorals were grown on the conducting glass substrates (FTO) using A hydrothermal process and CdS nanoparticles were loaded on TNC using successive ionic layer adsorption and reaction (SILAR) method. The TiO(2), CdS and TiO(2)-CdS samples were characterized by optical absorption, X-ray diffraction (XRD), FT-Raman, FT-IR, scanning electron microscopy (SEM) and contact angle. Further, their photoelectrochemical (PEC) performance was tested in NaOH, Na(2)S-NaOH-S and Na(2)S electrolytes, respectively. When CdS nanoparticles are coated on TNCs, the optical absorption is found to be enhanced and band edge is red-shifted towards visible region. The TiO(2)-CdS sample exhibits improved photoelectrochemical (PEC) performance with maximum short circuit current of (J(sc)) 1.04 mA cm(-2). After applying these TiO(2)-CdS electrodes in photovoltaic cells, the photocurrent was found to be enhanced by 2.7 and 32.5 times, as compared with those of bare CdS and TiO(2) nanocorals films electrodes respectively. Also, the power conversion efficiency of TiO(2)-CdS electrodes is 0.72%, which is enhanced by about 16 and 29 times for TiO(2), CdS samples.
硫化镉（CdS）纳米粒子敏化的氧化钛纳米珊瑚（TNC）是通过两步沉积法合成的。TiO(2)纳米珊瑚是通过水热法在导电玻璃基底（FTO）上生长的，CdS 纳米粒子是通过连续离子层吸附和反应（SILAR）法负载在 TNC 上的。TiO(2)、CdS 和 TiO(2)-CdS 样品通过光学吸收、X 射线衍射（XRD）、傅里叶变换拉曼（FT-Raman）、傅里叶变换红外（FT-IR）、扫描电子显微镜（SEM）和接触角进行了表征。此外，它们的光电化学（PEC）性能分别在 NaOH、Na(2)S-NaOH-S 和 Na(2)S 电解液中进行了测试。当 CdS 纳米粒子涂覆在 TNC 上时，发现光学吸收增强，带边向可见光区域红移。TiO(2)-CdS 样品表现出改善的光电化学（PEC）性能，最大短路电流（J(sc)）为 1.04 mA cm(-2)。将这些 TiO(2)-CdS 电极应用于光伏电池后，与裸 CdS 和 TiO(2)纳米珊瑚薄膜电极相比，光电流分别增强了 2.7 和 32.5 倍。此外，TiO(2)-CdS 电极的功率转换效率为 0.72%，分别比 TiO(2)和 CdS 样品提高了约 16 和 29 倍。
