Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4902983
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- Department of Science and Technology
- Department of Atomic Energy of the Government of India
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We study the light matter interaction in WS2 nanotube-graphene hybrid devices. Using scanning photocurrent microscopy, we find that by engineering graphene electrodes for WS2 nanotubes we can improve the collection of photogenerated carriers. We observe inhomogeneous spatial photocurrent response with an external quantum efficiency of similar to 1% at 0V bias. We show that defects play an important role and can be utilized to enhance and tune photocarrier generation. (C) 2014 AIP Publishing LLC.
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