ZnO Nanoparticle/Graphene Hybrid Photodetectors via Laser Fragmentation in Liquid
Abstract
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 × 104 AW−1 and gain of up to 1.3 × 105 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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 21, 2020
- Source ID
- 10.3390/nano10091648
Entities
People
- Alberto Piqué
- Heungsoo Kim
- Kristin Charipar
- Nicholas Charipar
Organizations
- United States Naval Research Laboratory