Special Section on Hot Carrier Energy Harvesting and Conversion

Plasmonic effect–enhanced Ag nanodisk incorporated ZnO/Si metal–semiconductor–metal photodetectors

[+] Author Affiliations
Manjeet Kumar, Joondong Kim, Ju-Hyung Yun

Incheon National University, Department of Electrical Engineering, 119 Academi Road, Incheon 406772, Republic of Korea

Hossein Shokri Kojori

University of Miami, Department of Electrical and Computer Engineering, 1251 Memorial Drive, Coral gables, Florida 33146, United States

Sung Jin Kim

University of Miami, Department of Electrical and Computer Engineering, 1251 Memorial Drive, Coral gables, Florida 33146, United States

University of Miami, Biomedical Nanotechnology Institute (BioNIUM), 1501 NW 10th Avenue, Miami, Florida 33142, United States

Hyeong-Ho Park

Korea Advanced Nano Fab Center (KANC), Device Platforms Lab, Nano Process Division, Suwon 16229, Republic of Korea

J. Photon. Energy. 6(4), 042508 (Sep 14, 2016). doi:10.1117/1.JPE.6.042508
History: Received June 8, 2016; Accepted August 17, 2016
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Abstract.  In this work, we present the enhancement of ultraviolet (UV) photodetection of Ag-ZnO thin film deposited by radio frequency magnetron sputtering. The surface morphological, optical, structural, and electrical properties of the deposited thin films were investigated by various characterization techniques. With this Ag-ZnO thin film structure and proper geometry of metal–semiconductor–metal (MSM) interdigitated structure design, photocurrent enhancement has been accomplished. MSM-photodetectors (PDs) using structures of Ag-ZnO gave a 30 times higher magnitude photocurrent at 340 nm of the wavelength. Plasmon-induced hot electrons contributed to improved spectral response to the UV region, while absorption and scattering effect enhanced broadband improvement to a response in the VIS–IR spectrum range. The improvement of Ag-ZnO PD in comparison with ZnO is attributed to the surface plasmon effect using Ag nanodisks. These results indicate that Ag-ZnO thin films can serve as excellent ultraviolet-PD and a very promising candidate for practical applications.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Manjeet Kumar ; Hossein Shokri Kojori ; Sung Jin Kim ; Hyeong-Ho Park ; Joondong Kim, et al.
"Plasmonic effect–enhanced Ag nanodisk incorporated ZnO/Si metal–semiconductor–metal photodetectors", J. Photon. Energy. 6(4), 042508 (Sep 14, 2016). ; http://dx.doi.org/10.1117/1.JPE.6.042508


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