A ultraviolet-visible-near infrared photodetector using nanocrystalline Si superlattice

作者：Yu Zhenrui^*; Aceves Mijares Mariano

来源：Applied Physics Letters, 2009, 95(8): 081101.

DOI：10.1063/1.3210784

• elemental semiconductors
• indium compounds
• infrared detectors
• integrated circuits
• nanostructured materials
• photodetectors
• photoluminescence
• semiconductor superlattices
• silicon

We report a simple silicon/Si nanocrystal superlattice/indium tin oxide structure as a photodetector, which shows a very high photosensitivity in a wide wavelength range from ultraviolet (UV) to near infrared. The fabrication of this photodetector structure is easily integrated into a standard process of Si microelectronics. The light and dark current versus voltage characteristics and photoluminescence of the photodetector show that the optical down-conversion of UV light by the superlattice layer is the main reason of the enhanced UV response.

• 出版日期2009-8-24