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. 2016 Jun;28(23):4639-45.
doi: 10.1002/adma.201600482. Epub 2016 Apr 6.

Crumpled Graphene Photodetector with Enhanced, Strain-Tunable, and Wavelength-Selective Photoresponsivity

Pilgyu Kang  1 , Michael Cai Wang  1 , Peter M Knapp  1 , SungWoo Nam  1   2
Affiliations

Crumpled Graphene Photodetector with Enhanced, Strain-Tunable, and Wavelength-Selective Photoresponsivity

Pilgyu Kang et al. Adv Mater. 2016 Jun.

Abstract

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.

Keywords: crumpled graphene; photodetectors; photonic crystals; photoresponsivity; stretchable.

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