Zinc oxide (ZnO) based ultraviolet (UV) photodetectors have been fabricated and their photoresponse is studied in Schottky diode configuration. A cost-effective single-step electrochemical deposition method is adopted for the growth of ZnO film with nanorod (NR) and nanoflake morphology. A comparative study of the photodetection parameters based on surface trap states, crystallinity, and strain is done for two different morphology films. Significant photocurrent enhancement is observed for the nanorods under UV light, with appreciable photoresponse in the blue region. A template-assisted growth of ZnO NR film is proposed for better photoresponse and sensitivity of the device, useful for various optoelectronic applications.

中文翻译：

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垂直生长的ZnO纳米棒和纳米片薄膜的光响应比较研究

已经制造了基于氧化锌（ZnO）的紫外线（UV）光电探测器，并在肖特基二极管配置中研究了它们的光响应。采用具有成本效益的单步电化学沉积方法来生长具有纳米棒（NR）和纳米薄片形态的ZnO膜。针对两种不同形态的薄膜，根据表面陷阱状态，结晶度和应变对光电检测参数进行了比较研究。在紫外光下观察到纳米棒的光电流显着增强，在蓝色区域有明显的光响应。提出了模板辅助生长的ZnO NR薄膜，以提高器件的光响应性和灵敏度，可用于各种光电应用。