TY - JOUR
T1 - Fabrication of plasmonic gold-nanoparticle-transition metal oxides thin films for optoelectronic applications
AU - Kumar, Neetesh
AU - Lee, Hock Beng
AU - Hwang, Sunbin
AU - Kim, Tae Wook
AU - Kang, Jae Wook
N1 - Funding Information:
This work was supported by the Basic Science Research Program (NRF-2017R1A2B2001838) through the National Research Foundation (NRF) of Korea, funded by the Ministry of Science, ICT & Future Planning .
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2019/2/15
Y1 - 2019/2/15
N2 - A simple, cost-effective, and one-step procedure for fabrication of gold-nanoparticle-transition metal oxide (Au-TMO) thin films with tuned optical and structural properties is described. In this approach, a homogeneous mixed precursor solution was used to fabricate Au-MoO3 and Au-WO3 thin films via a spray pyrolysis technique. The in-situ grown Au nanoparticles in the host matrices exhibited a characteristic surface plasmon resonance absorption in the visible-NIR region with peak positions at λmax ≈ 600 nm, ≈550 nm, and ≈575 nm for Au-MoO3, Au-a-WO3 (amorphous), and Au-h-WO3 (hexagonal) films, respectively. The structural and morphological characterization measurements confirmed that the high purity in-situ grown Au nanoparticles were 10–100 nm in size, and individual particles were embedded into the host matrices. These films were applied as plasmon-induced photoelectric conversion devices with ITO/NiOx/Au-WO3/Ag structures as a prototype device. The device exhibited a short-circuit current of 0.1 mA with an open-circuit voltage of ∼1.4 V under one-sun illumination. Our one-step fabrication approach is highly promising for fabricating other Au-TMOs thin films with tuned optical properties on a large area and can be applied for various optoelectronic applications.
AB - A simple, cost-effective, and one-step procedure for fabrication of gold-nanoparticle-transition metal oxide (Au-TMO) thin films with tuned optical and structural properties is described. In this approach, a homogeneous mixed precursor solution was used to fabricate Au-MoO3 and Au-WO3 thin films via a spray pyrolysis technique. The in-situ grown Au nanoparticles in the host matrices exhibited a characteristic surface plasmon resonance absorption in the visible-NIR region with peak positions at λmax ≈ 600 nm, ≈550 nm, and ≈575 nm for Au-MoO3, Au-a-WO3 (amorphous), and Au-h-WO3 (hexagonal) films, respectively. The structural and morphological characterization measurements confirmed that the high purity in-situ grown Au nanoparticles were 10–100 nm in size, and individual particles were embedded into the host matrices. These films were applied as plasmon-induced photoelectric conversion devices with ITO/NiOx/Au-WO3/Ag structures as a prototype device. The device exhibited a short-circuit current of 0.1 mA with an open-circuit voltage of ∼1.4 V under one-sun illumination. Our one-step fabrication approach is highly promising for fabricating other Au-TMOs thin films with tuned optical properties on a large area and can be applied for various optoelectronic applications.
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U2 - 10.1016/j.jallcom.2018.10.055
DO - 10.1016/j.jallcom.2018.10.055
M3 - Article
AN - SCOPUS:85054754339
SN - 0925-8388
VL - 775
SP - 39
EP - 50
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -