Abstract Nano crystalline zinc sulfide thin films were deposited onto glass substrates by chemical bath deposition method. One of the samples was annealed at 300 °C for 2 h in air using a muffle furnace. The prepared thin films were investigated by X-ray diffraction (XRD), UV–visible spectroscopy (UV–vis), photoluminescence spectroscopy (PL), scanning electron microscopy (SEM) and Raman spectroscopy (FT-R) studies before and after annealing. The analysis confirmed the thermal-induced anion substitution and conversion of ZnS crystal to ZnO wurtzite crystal. XRD pattern showed that these films were phase pure and polycrystalline in nature. Optical band gap was found to be 3.86 eV for ZnS and 3.21 eV for ZnO. The films prepared by this simple, low-cost technique are suitable for photovoltaic and optoelectronic applications.

中文翻译：

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CBD 生长的 ZnS 薄膜热转化为 ZnO

摘要 采用化学浴沉积法在玻璃基板上沉积纳米晶硫化锌薄膜。其中一个样品在空气中使用马弗炉在 300°C 下退火 2 小时。通过X射线衍射（XRD），紫外 - 可见光谱（UV-vis），光致发光光谱（PL），扫描电子显微镜（SEM）和拉曼光谱（FT-R）研究退火前后的薄膜. 分析证实了热诱导的阴离子取代和 ZnS 晶体向 ZnO 纤锌矿晶体的转化。XRD图表明这些薄膜本质上是纯相和多晶的。发现光学带隙对于 ZnS 为 3.86 eV，对于 ZnO 为 3.21 eV。通过这种简单、低成本的技术制备的薄膜适用于光伏和光电应用。