Preparation and photoelectric properties of mesoporous ZnO films
Source abstract
Abstract
Mesoporous ZnO films doped with Ti4+ (M-ZnO) have been prepared by doping process and sol–gel method. The films have mesoporous structures and consist of nano-crystalline phase, as evidenced from small angle X-ray diffraction and high resolution transmission electron microscopy. The wide angle X-ray diffraction of M-ZnO films confirms that M-ZnO has hexagonal wurtzite structure and ternary ZnTiO3 phases. Ultraviolet–visible transmittance spectra, absorbance spectra and energy gaps of the films were measured. The Eg of M-ZnO is 3.25 eV. Photoluminescence intensity of M-ZnO centered at 380 nm increases obviously with the excitation power, which is due to the doping process and enhanced emission efficiency. M-ZnO thin films display a positive photovoltaic effect compared to mesoporous TiO2 (M-TiO2) films.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: ZnO doping and properties · Gas Sensing Nanomaterials and Sensors · Transition Metal Oxide Nanomaterials
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