Comparative Study of Photoresponse from Vertically Grown ZnO Nanorod and Nanoflake Films.

ACS Omega

Academy of Scientific and Innovative Research (AcSIR), Electrical & Electronics Metrology Division, and Advanced Materials and Devices Division, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India.

Published: September 2017

Zinc oxide (ZnO) based ultraviolet (UV) photodetectors have been fabricated and their photoresponse is studied in Schottky diode configuration. A cost-effective single-step electrochemical deposition method is adopted for the growth of ZnO film with nanorod (NR) and nanoflake morphology. A comparative study of the photodetection parameters based on surface trap states, crystallinity, and strain is done for two different morphology films. Significant photocurrent enhancement is observed for the nanorods under UV light, with appreciable photoresponse in the blue region. A template-assisted growth of ZnO NR film is proposed for better photoresponse and sensitivity of the device, useful for various optoelectronic applications.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6644608PMC
http://dx.doi.org/10.1021/acsomega.7b00914DOI Listing

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