Low-Cost ZnO-Based Ultraviolet–Infrared Dual-Band Detector Sensitized With PbS Quantum Dots

A low-cost photoconductive dual-band detector based on a ZnO film sensitized with lead sulfide quantum dots (PbS-QDs) is reported. The UV response arises from the interband absorption of UV radiation by ZnO, and the IR response is due to the absorption in the PbS-QDs. The detector exhibits UV response from 200 to 400 nm with a peak responsivity of 4.0 × 10… CONTINUE READING