NDLI: Efficient photon management with Ag nanoparticles coated TiO$_{2}$ nanowire clusters for photodetector application

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Efficient photon management with Ag nanoparticles coated TiO$_{2}$ nanowire clusters for photodetector application

Content Provider	Springer Nature Link
Author	Ngangbam, Chitralekha Mondal, Aniruddha Choudhuri, Bijit
Copyright Year	2015
Abstract	TiO$_{2}$ nanowire clusters (NWCs) covered with Ag nanoparticles (NPs) were synthesized on Si substrates using GLAD technique. Ag NPs/TiO$_{2}$ NWCs showed enhanced optical absorption all over the spectrum compared to bare TiO$_{2}$ NWCs. The leakage current of the TiO$_{2}$ NWCs device (−10.8 μA) was reduced by ∼9 × 10$^{3}$ times for Ag NPs/TiO$_{2}$ NWCs detector (−1.2 nA) at −1 V applied bias. Ag NPs/TiO$_{2}$ NWCs detector exhibited maximum photoresponsivity ∼2.4 times (−2 V) as compared to the bare TiO$_{2}$ NWCs detector. Using 10 K photocapacitance measurement, a sharp peak at 355 nm (∼3.5 eV) was detected due to the main band transition. The other sub band gap defects were observed within 410–490 nm along with a broad hump between 595–700 nm. The light dependent capacitance-time (I-T) characteristic of the Ag/TiO$_{2}$ NWCs detector shows rise-time (T $_{ r }$) of 9.6 s and decay time (T $_{ d }$) of 10 s.
Starting Page	758
Ending Page	763
Page Count	6
File Format	PDF
ISSN	17388090
Journal	Electronic Materials Letters
Volume Number	11
Issue Number	5
e-ISSN	20936788
Language	English
Publisher	The Korean Institute of Metals and Materials
Publisher Date	2015-09-10
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	silver nanoparticles TiO$_{2}$ nanowires enhanced photodetection photocapacitance glancing angle deposition surface plasmon Optical and Electronic Materials Condensed Matter Physics Nanotechnology and Microengineering Characterization and Evaluation of Materials Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials

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