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Boosted UV Sensitivity of Er-Doped In2O3 Thin Films Using Plasmonic Ag Nanoparticle-Based Surface Texturing
Ag nanoparticles (NPs) were deposited on the sol-gel-processed Erbium-doped Indium Oxide (In 2 O 3 :Er) thin films (TFs) using thermal evaporation cum glancing angle deposition technique for the first time. The grazing incidence X-ray diffraction analysis confirms the presence of a face-centered cub...
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Published in: | Plasmonics (Norwell, Mass.) Mass.), 2018-06, Vol.13 (3), p.1105-1113 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Ag nanoparticles (NPs) were deposited on the sol-gel-processed Erbium-doped Indium Oxide (In
2
O
3
:Er) thin films (TFs) using thermal evaporation cum glancing angle deposition technique for the first time. The grazing incidence X-ray diffraction analysis confirms the presence of a face-centered cubic structure of Ag NPs and monoclinic crystal structure of Ag
3
O
4
. The presence of Ag NPs on In
2
O
3
:Er TFs reduced the photoluminescence emission intensity. Au/In
2
O
3
:Er/Si and Au/In
2
O
3
:Er/Ag NPs/In
2
O
3
:Er/Si (plasmonic) Schottky contact-based detectors were fabricated. Presence of Ag NPs on the In
2
O
3
:Er TFs enhanced the photoconduction for the plasmonic detector. The photoresponsivity of the plasmonic device was ∼ 8.7 times greater than In
2
O
3
:Er TF-based device for 380 nm wavelength at an applied bias of − 6.6 V. The plasmonic device showed a maximum internal gain of ~ 3181 at 380 nm wavelength. The plasmonic device possessed higher detectivity and lower noise equivalent power as compared to In
2
O
3
:Er TF in the ultraviolet (UV) region. The plasmonic device exhibited excellent temporal response with rise and fall time of ~ 0.25 and ~ 0.12 s, respectively. The admirable characteristics of the simple plasmonic device structure can commercially emerge out as UV detector. |
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ISSN: | 1557-1955 1557-1963 |
DOI: | 10.1007/s11468-017-0679-x |