Laser induced hydrothermal growth of ZnO rods for UV detector application

For the first time laser induced hydrothermal growth (LIHG) process was employed to get high structural and optical characteristic of a great quality ZnO rods on a p-type Si (111) substrate without the use of expensive and complex equipment for high-performance photodetector devices. X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), and UV-VIS spectroscopy were used to investigate the morphological, structural, and optical properties of ZnO rods. X-ray diffraction analyzing showed that the growth ZnO rods-based device have a good crystal nature, with a highly preferred c-axis orientation along the (0 0 2) plane. The optical characterization of the ZnO rods revealed high transparency in the visible-near infrared regions of electromagnetic spectrum and have an optical energy band gap of 3.24 eV. The ZnO/Si hetero-structured nanorods device had an ideality factor of 2.26. The fabricated n-ZnO/p-Si UV nano-photodetector exhibited a high-performance with superior responsivity (up to similar to 441.2 mA. W- 1) and with a specific detectivity of 39.2 *10(12) cm. Hz(1/2). W- 1 at around the wavelength of 350 nm.

Automated summary

For the first time, laser induced hydrothermal growth (LIHG) process was used to obtain high quality ZnO rods on a p-type Si (111) substrate without expensive and complex equipment. X-ray diffraction, field emission scanning electron microscope, and UV-VIS spectroscopy were employed to investigate the structural and optical properties of ZnO rods. The ZnO/Si hetero-structured nanorods device exhibited superior responsivity and specific detectivity at a wavelength of 350 nm.