2022 Annual Meeting
Optimizing Silver Selenide Interdigitated Electrodes for High Sensitivity Near Infrared Imaging
Near infrared imaging has promising potential applications including but not limited to detecting crop conditions, enabling night vision, and studying changing weather patterns. In the technology, colloidal quantum dots, which are semiconductor particles a few nanometers in size, are used as photodetectors, converting absorbed light in the range of 700 nm to 1400 nm into electrical current. In our work, we study silver selenide (Ag2Se), for its potential as a near infrared photodetector. By manipulating particle sizes, ligands, annealing parameters and dopants, we can alter the electrical properties of silver selenide. Interdigitated electrodes, which are electrode structures infused in a comb-shaped arrangement, serve as a substrate for depositing silver selenide quantum dots and as a tool for measuring the properties of silver selenide at different spacings. By evaluating the impact of each factor on the rise of conductivity and responsivity of the silver selenide interdigitated electrodes device, we aim to optimize Ag2Se interdigitated electrodes for high sensitivity near infrared imaging.