Abstract
We report on the synthesis and characterization of hexagonal boron nitride nanosheets (BNNSs) for deep ultraviolet (DUV) photodetector applications. The vertical structure metal-semiconductor-metal (MSM) solar-blind DUV photodetector based on BNNSs has been fabricated and tested. The detector performance is stable under UV radiation at temperatures exceeding 100 degrees C. The bandgap engineered material has a cutoff wavelength of approximately 250 nm and does not respond to any longer wavelength or visible light. The photodetector demonstrates the advantages of hexagonal BNNSs as a wide band gap material for DUV detection in harsh environments. (C) 2016 Optical Society of America