Journal
NANOMATERIALS
Volume 10, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/nano10091648
Keywords
graphene; laser fragmentation; laser processing; nanoparticles; ultraviolet photodetection; zinc oxide
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Funding
- Office of Naval Research (ONR) through the Naval Research Laboratory Basic Research Program
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By combining the enhanced photosensitive properties of zinc oxide nanoparticles and the excellent transport characteristics of graphene, UV-sensitive, solar-blind hybrid optoelectronic devices have been demonstrated. These hybrid devices offer high responsivity and gain, making them well suited for photodetector applications. Here, we report a hybrid ZnO nanoparticle/graphene phototransistor that exhibits a responsivity up to 4 x 10(4)AW(-1)and gain of up to 1.3 x 10(5)with high UV wavelength selectivity. ZnO nanoparticles were synthesized by pulsed laser fragmentation in liquid to attain a simple, efficient, ligand-free method for nanoparticle fabrication. By combining simple fabrication processes with a promising device architecture, highly sensitive ZnO nanoparticle/graphene UV photodetectors were successfully demonstrated.
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