Abstract
This study investigates a coreless radio frequency identification (RFID) photosensitive sensor tag that employs a nanocomposite material comprising molybdenum disulfide (MoS₂), cobalt oxide (Co₃O₄), and reduced graphene oxide (RGO). The photosensitive sensor tag exhibits commendable photosensitivity performance, which has been evaluated through comprehensive sensitivity, response characteristic, and stability testing. Upon exposure to UV irradiation at intensities of 20 mW/cm2 and 200 mW/cm2, the input return loss undergoes a change of 20.933 dB. Within the range of 20 mW/cm2 to 200 mW/cm2, the photosensitive sensor tag demonstrates a response time of 15.4 s and a recovery time of 30.6 s. These results provide compelling evidence that the MoS₂/Co₃O₄/RGO nanocomposite material, functioning as a photosensitive material, exhibits exceptional sensitivity, responsiveness, and repeatability.
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