Nanowire-based frequency-selective capacitive photodetector for resonant detection of infrared radiation at room temperature

Authors

Saumil Bandyopadhyay, Virginia Commonwealth UniversityFollow

Document Type

Article

Original Publication Date

2014

Journal/Book/Conference Title

Journal of Applied Physics

Volume

116

Issue

2

DOI of Original Publication

10.1063/1.4887515

Comments

Originally published at http://dx.doi.org/10.1063/1.4887515

Date of Submission

October 2015

Abstract

Characteristics of a capacitive infrared photodetector that works at room temperature by registering a change in capacitance upon illumination are reported. If used in an ideal resonant inductor-resistor-capacitor circuit, it can exhibit zero dark current, zero standby power dissipation, infinite detectivity, and infinite light-to-dark contrast ratio. It is also made frequency-selective by employing semiconductor nanowires that selectively absorb photons of energies close to the nanowire's bandgap. Based on measured parameters, the normalized detectivity is estimated to be ∼3 × 10⁷ Jones for 1.6 μm IR wavelength at room temperature.

Rights

Bandyopadhyay, S. Nanowire-based frequency-selective capacitive photodetector for resonant detection of infrared radiation at room temperature. Journal of Applied Physics, 116, 023108 (2014). Copyright © 2014 AIP Publishing LLC.

Is Part Of

VCU Electrical and Computer Engineering Publications