Influence of Gas Adsorption and Gold Nanoparticles on the Electrical Properties of CVD-Grown MoS2 Thin Films

2016 ◽  
Vol 8 (33) ◽  
pp. 21612-21617 ◽  
Author(s):  
Yunae Cho ◽  
Ahrum Sohn ◽  
Sujung Kim ◽  
Myung Gwan Hahm ◽  
Dong-Ho Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Gold Nanoparticles ◽  
Electrical Properties ◽  
Gas Adsorption

scholarly journals Size Effect of Gold Nanoparticles on Optical and Electrical Properties of Au@TiO\(_2\) Nanocomposite Thin Films

2020 ◽  
Vol 31 (1) ◽  
Author(s):  
Long Duy Pham ◽  
Chi Ha Le ◽  
Oanh Thi Tu Nguyen ◽  
Chien Tran Dang ◽  
Tai Ngoc Ly ◽  
...  
Keyword(s):  
Thin Films ◽  
Gold Nanoparticles ◽  
Electrical Properties ◽  
Uv Light ◽  
Great Influence ◽  
Nanocomposite Films ◽  
Optical And Electrical Properties ◽  
Solar Simulator ◽  
Sem Images ◽  
20 Nm

This study focuses on the influence of gold nanoparticle sizes on optical and electrical properties of Au@TiO2 nanocomposite films. Here, the gold nanoparticles (AuNPs) of different sizes of 5 nm, 10 nm, 20 nm, 40 nm and 60 nm were dispersed onto nanoporous TiO2 thin films to form Au@TiO2 nanocomposite films. FE-SEM images and UV-vis absorption spectra show that AuNPs had good dispersion on the TiO2 films and all Au@TiO2 nanocomposite films exhibited a good surface plasmon resonance (SPR) with the resonance absorption peaks in the visible light region (about 550 nm). The effect of AuNPs on the films photoluminescence property was investigated using excited laser light of 325 nm wavelength at room temperature. The films electrical properties were studied from the change of the photocurrent under illumination of solar simulator and UV light source. The results show that the presence of gold nanoparticles has significantly improved the photocurrent of Au@TiO2 nanocomposite films and especially when AuNPs size was less than 20 nm. In addition, we also found that the photocurrent magnitude of the films with small AuNPs sizes (5 nm and 10 nm) under solar simulator light was 4 times larger than the one under UV light. These results indicate that AuNPs size had a great influence on the improvement of photocurrent in nanocomposite films.

Formation of high temperature phase in flash-evaporated SnSe films

1990 ◽  
Vol 48 (4) ◽  
pp. 698-699
Author(s):  
J.P.S. Hanjra
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Energy Gap ◽  
Dominant Role ◽  
Fine Powder ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
Water Mixture ◽  
Flash Evaporation ◽  
Photovoltaic Applications

Tin mono selenide (SnSe) with an energy gap of about 1 eV is a potential material for photovoltaic applications. Various authors have studied the structure, electronic and photoelectronic properties of thin films of SnSe grown by various deposition techniques. However, for practical photovoltaic junctions the electrical properties of SnSe films need improvement. We have carried out investigations into the properties of flash evaporated SnSe films. In this paper we report our results on the structure, which plays a dominant role on the electrical properties of thin films by TEM, SEM, and electron diffraction (ED).Thin films of SnSe were deposited by flash evaporation of SnSe fine powder prepared from high purity Sn and Se, onto glass, mica and KCl substrates in a vacuum of 2Ø micro Torr. A 15% HF + 2Ø% HNO3 solution was used to detach SnSe film from the glass and mica substrates whereas the film deposited on KCl substrate was floated over an ethanol water mixture by dissolution of KCl. The floating films were picked up on the grids for their EM analysis.

Structural and Electrical Properties of Thermally Evaporated SnxSe1-x Thin Films

2011 ◽  
Vol 3 (10) ◽  
pp. 1-4 ◽  
Author(s):  
Bushra A Hasan ◽  
◽  
Ghuson H Mohamed ◽  
Amer A Ramadhan
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Structural And Electrical Properties

Effect of Gamma Radiation on Structural, Optical and Electrical Properties of nanostructured CdHgTe Thin Films

2018 ◽  
Vol 1 (1) ◽  
pp. 26-31 ◽  
Author(s):  
B Babu ◽  
K Mohanraj ◽  
S Chandrasekar ◽  
N Senthil Kumar ◽  
B Mohanbabu
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Gamma Radiation ◽  
Glass Substrate ◽  
Gamma Ray ◽  
Optical And Electrical Properties ◽  
Deposition Technique ◽  
Polycrystalline Structure ◽  
Dc Electrical Conductivity

CdHgTe thin films were grown onto glass substrate via the Chemical bath deposition technique. XRD results indicate that a CdHgTe formed with a cubic polycrystalline structure. The crystallinity of CdHgTe thin films is gradually deteriorate with increasing the gamma irradiation. EDS spectrums confirms the presence of Cd, Hg and Te elements. DC electrical conductivity results depicted the conductivity of CdHgTe increase with increasing a gamma ray dosage

scholarly journals Influence of the crystallization thermal treatment on the structural and electrical properties of PZT thin films

2004 ◽  
Vol 7 (2) ◽  
pp. 363-367 ◽  
Author(s):  
Antonio Leondino Bacichetti Junior ◽  
Manuel Henrique Lente ◽  
Ricardo Gonçalves Mendes ◽  
Pedro Iris Paulin Filho ◽  
José Antonio Eiras
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Thermal Treatment ◽  
Pzt Thin Films ◽  
Structural And Electrical Properties

scholarly journals The effects of zinc substitution on the electrical properties of MgNb2O6 thin films

2020 ◽  
pp. 1-9
Author(s):  
Yi-Da Ho ◽  
Jing-Ann Lai ◽  
Meng-Hung Tsai ◽  
Cheng-Liang Huang
Keyword(s):  
Thin Films ◽  
Electrical Properties

scholarly journals Structural, Optical and Electrical Properties of Al+MoO3 and Au+MoO3 Thin Films Prepared by Magnetron Codeposition

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 766
Author(s):  
Tihomir Car ◽  
Ivan Jakovac ◽  
Ivana Šarić ◽  
Sigrid Bernstorff ◽  
Maja Micetic
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Au Nanoparticle ◽  
Content Increase ◽  
Optical And Electrical Properties ◽  
Volume Percentage ◽  
Sputtering Deposition ◽  
Nanoparticle Formation ◽  
Al Content ◽  
Sputtering Power

Structural, optical and electrical properties of Al+MoO3 and Au+MoO3 thin films prepared by simultaneous magnetron sputtering deposition were investigated. The influence of MoO3 sputtering power on the Al and Au nanoparticle formation and spatial distribution was explored. We demonstrated the formation of spatially arranged Au nanoparticles in the MoO3 matrix, while Al incorporates in the MoO3 matrix without nanoparticle formation. The dependence of the Au nanoparticle size and arrangement on the MoO3 sputtering power was established. The Al-based films show a decrease of overall absorption with an Al content increase, while the Au-based films have the opposite trend. The transport properties of the investigated films also are completely different. The resistivity of the Al-based films increases with the Al content, while it decreases with the Au content increase. The reason is a different transport mechanism that occurs in the films due to their different structural properties. The choice of the incorporated material (Al or Au) and its volume percentage in the MoO3 matrix enables the design of materials with desirable optical and electrical characteristics for a variety of applications.

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