Spatially resolved photoresponse on individual ZnO nanorods: correlating morphology, defects and conductivity.

ABSTRACT: Electrically active native point defects have a significant impact on the optical and electrical properties of ZnO nanostructures. Control of defect distribution and a detailed understanding of their physical properties are central to designing ZnO in novel functional forms and architecture, which ultimately decides device performance. Defect control is primarily achieved by either engineering nanostructure morphology by tailoring growth techniques or doping. Here, we report conducting atomic force microscopy studies of spatially resolved photoresponse properties on ZnO nanorod surfaces. The photoresponse for super-band gap, ultraviolet excitations show a direct correlation between surface morphology and photoactivity localization. Additionally, the system exhibits significant photorespons

SUBMITTER: Bandopadhyay K 

PROVIDER: S-EPMC4917851 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature