Resistance hysteresis loop characteristic analysis of VO2 thin film for high sensitive microbolometer

Based on the Preisach model for hysteresis loop, the resistance hysteresis loop characteristic of thermosensitive VO2 thin film is theoretically analyzed. The resistance characteristics dependent on temperature in the resistance hysteresis loop can be obtained through theoretical numerical calculation, and the numerical calculated results are in good agreement with the experimentally measured results of some VO2 thin film samples in our laboratory. The resistance characteristics calculated results can be utilized to predict the infrared responsivity of high sensitive microbolometer of VO2 thin film and direct the operating temperature optimization for microbolometer.