Synergistic Effect of Au Interband Transition on Graphene Oxide/ZnO Heterostructure: Experimental Analysis with FDTD Simulation Article Swipe
Bablu Basumatary
,
Santanu Podder
,
Samir Thakur
,
Jyotisman Bora
,
B. L. Sharma
,
Sankar Moni Borah
,
Nirab Ch. Adhikary
,
D.S. Patil
,
Arup R. Pal
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1021/acsomega.1c06333
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1021/acsomega.1c06333
We furnish a comprehensive study on light-induced carrier generation due to the synergistic contribution of Au interband transition and graphene oxide (GO)/ZnO heterostructure. Plasmonic gold nanoparticles (Au_nps) are incorporated as a substructure sandwiched between GO and ZnO, assisting in additional photo-induced charge carrier generation. GO is prepared by a single-step plasma-enhanced chemical vapor deposition process. The GO/ZnO heterostructure having an active working area of 0.25 cm2 is created to unleash the pyroelectric property of ZnO, and subsequently, Au_np is introduced at the interface of GO/ZnO. Here, the interband transition of Au_np and its capability for charge carrier generation combined with the excitonic charge carrier generation of the highly crystalline non-centrosymmetric hexagonal wurtzite ZnO enhances the photoresponse. Furthermore, the interaction of Au_np with ZnO and its spatial electric field intensity distribution is demonstrated by finite difference time domain simulation which indicate toward an efficient carrier generation at the interface of Au_np and ZnO. The fabricated heterostructure has an active working wavelength in the UV-A region with the highest responsivity at 375 nm of the electromagnetic spectrum. The ultrafast response time (∼29 μs) of the device is due to the pyro-phototronic effect of the GO/ZnO heterostructure enhanced by the interband transition of Au. In the comparative study of the Au_np-enriched GO/ZnO heterostructure device with a GO/ZnO device, the former shows better performance. Both the devices work in the self-powered mode as well as the photoconductive mode, but with a higher on-off current ratio in the photoconductive mode. Hence, this work helps in properly understanding photo-induced charge generation in a Au interband transition enriched GO/ZnO heterostructure.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1021/acsomega.1c06333
- OA Status
- gold
- Cited By
- 15
- References
- 57
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4214517955
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4214517955Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1021/acsomega.1c06333Digital Object Identifier
- Title
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Synergistic Effect of Au Interband Transition on Graphene Oxide/ZnO Heterostructure: Experimental Analysis with FDTD SimulationWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
-
2022-02-22Full publication date if available
- Authors
-
Bablu Basumatary, Santanu Podder, Samir Thakur, Jyotisman Bora, B. L. Sharma, Sankar Moni Borah, Nirab Ch. Adhikary, D.S. Patil, Arup R. PalList of authors in order
- Landing page
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https://doi.org/10.1021/acsomega.1c06333Publisher landing page
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
- OA URL
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https://doi.org/10.1021/acsomega.1c06333Direct OA link when available
- Concepts
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Materials science, Heterojunction, Wurtzite crystal structure, Optoelectronics, Graphene, Charge carrier, Responsivity, Photoconductivity, Nanotechnology, Photodetector, Zinc, MetallurgyTop concepts (fields/topics) attached by OpenAlex
- Cited by
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15Total citation count in OpenAlex
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2025: 4, 2024: 4, 2023: 6, 2022: 1Per-year citation counts (last 5 years)
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57Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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