Document Type
Article
Publication Date
4-2-2017
Publisher
IOP Publishing
Abstract
We demonstrate an intrinsically fast Seebeck-type metal–semimetal–metal infrared photodetector based on Cd3As2 crystals. The Seebeck voltage is induced under off-center illumination, leading to asymmetric temperature gradients and a net current flow. The room-temperature responsivity of the sensor is 0.27 mA/W. The photocurrent signal is readily registered at a modulation frequency of 6 kHz, and the intrinsic bandwidth of the sensor is predicted to approach the terahertz range. The photocurrent depends on the optical power and modulation frequency. Our study demonstrates that crystallineCd3As2 is a promising material for high-bandwidth and spectrally broad photosensing, imaging, and communication.
Recommended Citation
Yavarishad, N., Hosseini, T., Kheirandish, E., Weber, C. P., & Kouklin, N. (2017). Room-temperature self-powered energy photodetector based on optically induced Seebeck effect in Cd3As2. Applied Physics Express, 10(5), 052201. https://doi.org/10.7567/APEX.10.052201
Comments
This is an author-created, un-copyedited version of an article accepted for publication in insert |name of journal|. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.7567/APEX.10.052201.