DOI: 10.1063/1.4776651. Photoresponse mechanisms of ultraviolet photodetectors based on colloidal ZnO quantum dot-graphene nanocomposites

Photoresponse mechanisms of ultraviolet photodetectors based on colloidal ZnO quantum dot-graphene nanocomposites

10.1063/1.4776651

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Ultraviolet (UV) photodetectors were fabricated using the wet spin-coating for ZnO quantum dots (QDs) and the transfer method for the graphene sheet. High-resolution transmission electron microscopy images showed that the ZnO QDs were uniformly distributed between the voids of the surface circumferences on the graphene layers. Current-voltage measurements on the UV photodetector at 300 K showed that the ratio of the photocurrent to the dark current was about 1.1 × 104. The rise and the decay times of the UV photodetector were approximately 2 and 1 s, respectively. The photoresponse mechanisms are described on the basis of the experimental results.

Bibliography

Ick Son, D., Yeon Yang, H., Whan Kim, T., & Il Park, W. (2013). Photoresponse mechanisms of ultraviolet photodetectors based on colloidal ZnO quantum dot-graphene nanocomposites. Applied Physics Letters, 102(2).

Authors 4

Dong Ick Son (first)
Hee Yeon Yang (additional)
Tae Whan Kim (additional)
Won Il Park (additional)

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Dates

Type	When
Created	12 years, 7 months ago (Jan. 16, 2013, 6:26 p.m.)
Deposited	2 years ago (Aug. 3, 2023, 4:09 p.m.)
Indexed	2 days, 17 hours ago (Aug. 31, 2025, 6:11 a.m.)
Issued	12 years, 7 months ago (Jan. 14, 2013)
Published	12 years, 7 months ago (Jan. 14, 2013)
Published Online	12 years, 7 months ago (Jan. 16, 2013)
Published Print	12 years, 7 months ago (Jan. 14, 2013)

Funders 0

None

BibTeX

@article{Ick_Son_2013, title={Photoresponse mechanisms of ultraviolet photodetectors based on colloidal ZnO quantum dot-graphene nanocomposites}, volume={102}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.4776651}, DOI={10.1063/1.4776651}, number={2}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Ick Son, Dong and Yeon Yang, Hee and Whan Kim, Tae and Il Park, Won}, year={2013}, month=jan }

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