Journal
NANOTECHNOLOGY
Volume 27, Issue 36, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/27/36/365303
Keywords
UV photodetector; nanoimprinting; 3D structure; Au nanoparticles
Funding
- National Natural Science Foundation of China [21503261, 61171043, 61474128, 51577093]
- Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
- Opening Project of Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3)
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Thermal nanoimprinting technology was employed to fabricate 3D periodic nanocone ZnO films with different height/pitch values for photodetectors to optimize their light capturing property. The photocurrents of patterned film photodetectors increase with the height/pitch values. The patterned ZnO-Au hybrid film further boosts the ultraviolet (UV) response. Due to the co-contribution of the light trapping of 3D periodic structures and the driving force of the Schottky barrier in the Au/ZnO interface, the patterned ZnO-Au hybrid films with height/pitch of 40 nm/866 nm exhibit the best UV photoresponse (I-on/I-off = 779.927), which is 3.8 times higher than its film counterpart (I-on/I-off = 164.1).
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