Research on the performance of photodetector based on Cr doped CuGaO2 nanoplates

Abstract This study reports photodetectors based on Cr doped CuGaO2 nanoplates. Through the Cr doped, Cr doped CuGaO2 nanoplates expressed broad-band absorption band from the ultraviolet region to the near-infrared region. The Cr doped CuGaO2 nanoplates photodetector fabricated on a rigid SiO2/Si substrate are capable of conducting broadband detection under the illumination of 365 nm, 620 nm, and 940 nm. The ZnO nanowires and Ag nanoparticles were further introduced into the Cr doped CuGaO2 nanoplates to enhance the detection performance, preparation of detection devices on quartz substrates and the responsivity value reaches 30.96 mA/W under ultraviolet light. This work provides a cost-effective pathway to develop detectors with more comprehensive and superior performance.