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Photodetectors: Mid‐Infrared Pyroresistive Graphene Detector on LiNbO 3 (Advanced Optical Materials 4/2017)
Author(s) -
Gopalan Kavitha K.,
Janner Davide,
Nanot Sebastien,
Parret Romain,
Lundeberg Mark B.,
Koppens Frank H. L.,
Pruneri Valerio
Publication year - 2017
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201770025
Subject(s) - materials science , graphene , infrared , pyroelectricity , optoelectronics , photodetector , doping , polarization (electrochemistry) , detector , crystal (programming language) , substrate (aquarium) , optics , nanotechnology , dielectric , ferroelectricity , chemistry , physics , oceanography , geology , computer science , programming language
Graphene on a z ‐cut LiNbO 3 pyroresistive platform allowing infrared light detection is reported by Frank H. L. Koppens, Valerio Pruneri, and co‐workers in article number 1600723. Light is absorbed in the LiNbO 3 crystal substrate and the subsequent temperature increase, via the pyroelectric effect, induces polarization (bound) charges at the crystal surface. This causes doping into graphene, which, in turn, changes its carrier density and conductivity.