Enhanced photocurrent from generated photothermal heat in indium nanoparticles embedded TiO2 film

被引：21
|
作者：
Choudhuri, B. [1 ]
Mondal, A. [1 ]
Dhar, J. C. [1 ]
Singh, N. K. [1 ]
Goswami, T. [1 ]
Chattopadhyay, K. K. [2 ]
机构：
[1] Natl Inst Technol Agartala, Dept Elect & Commun Engn, Agartala 799055, India
[2] Jadavpur Univ, Dept Phys, Kolkata 700032, India
来源：
APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 23期
关键词：
OPTICAL-PROPERTIES; PLASMA-RESONANCE; SOLAR; ABSORPTION; CONVERSION; GOLD; NANOSTRUCTURES; RELAXATION; PARTICLES;
D O I：
10.1063/1.4811360
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have demonstrated the synthesis of indium (In) nanoparticle (NP) arrays on TiO2 thin film (TF) using glancing angle deposition technique. The deposited In NPs are of the order of 4-10 nm in size. Optical absorption measurements depict 2.5 times enhanced absorption for In-NPs/TiO2-TF compared to TiO2 TF. The plasmonic device shows a turn on voltage at similar to 3.0 and similar to 1.0V under dark and 30 min illumination, respectively. The device current increases from 1.6 to 6.5 mA/cm(2) (+5V) with enhanced temperature for 1-30 min continuous light exposures. The plasmonic device shows eight-fold enlarged photoresponsivity (+2.3V) compared to the TiO2 TF based device. (C) 2013 AIP Publishing LLC.
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页数：4
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