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Crumpled Graphene Photodetector with Enhanced, Strain‐Tunable, and Wavelength‐Selective Photoresponsivity
Author(s) -
Kang Pilgyu,
Wang Michael Cai,
Knapp Peter M.,
Nam SungWoo
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201600482
Subject(s) - photodetection , graphene , photodetector , materials science , optoelectronics , wavelength , photonics , strain (injury) , nanotechnology , medicine
A stretchable photodetector with enhanced, strain‐tunable photoresponsivity is developed based on crumpled graphene by engineering 2D graphene into 3D structures. This crumpled graphene photodetector demonstrates ≈400% enhanced photoresponsivity led by an order‐of‐magnitude enhanced extinction of graphene and 100% modulation in photoresponsivity with 200% applied strain. Finally, strain‐tunable, wavelength‐selective photodetection is shown by integrated colloidal photonic crystals–crumpled graphene photodetector devices.