A study on the photoelectric characteristics of CMOS vertical diodes

This article studies the optoelectronic characteristics of CMOS vertical diodes. By applying monochromatic light of a specific wavelength on the diode, its spectral response curve in the wavelength range of 400-1010nm is recorded and studied. The results show that the response curve of the photodiode at the wavelength of 400-1010nm continuously fluctuates up and down, and the response curve reaches a peak between 750-800nm. For double-junction diodes, the spectral response curves were tested under two conditions: short-circuit and open-circuit. The test results verified that the spectral response is proportional to the junction depth, and the spectral response under the short-circuit condition is significantly smaller than that under the open-circuit condition.