scholarly journals Low Temperature Gas Sensing Coatings Made Through Wet Chemical Deposition of Niobium Doped Titanium Oxide Colloid

2011 ◽  
Vol 02 (04) ◽  
pp. 265-269
Author(s):  
Naji Al Dahoudi
Keyword(s):  
Low Temperature ◽  
Titanium Oxide ◽  
Gas Sensing ◽  
Chemical Deposition ◽  
Niobium Doped ◽  
Wet Chemical

Low-temperature Wet Chemical Deposition of Ultra-thin ZnS/ZnO Bilayers on Plastic Substrates for Applications of Photovoltaic Devices

2010 ◽  
Vol 1260 ◽  
Author(s):  
Rong-Fuh Louh ◽  
William Wu ◽  
Jean Liu ◽  
Irene Tsai
Keyword(s):  
Low Temperature ◽  
Thick Film ◽  
Chemical Deposition ◽  
Processing Parameters ◽  
Organic Substrates ◽  
Photovoltaic Devices ◽  
Plastic Substrates ◽  
Wet Chemical Synthesis ◽  
Vis Spectroscopy ◽  
Wet Chemical

AbstractThe ultra-thin II-VI semiconductor ZnS/ZnO bilayers (< 50 nm thickness for each layer) can be easily formed on the plastic substrates at 70˜80°C for 20 min. By low temperature wet chemical synthesis techniques, namely chemical bath deposition (CBD) and successive ionic layer adsorption and reaction (SILAR). The specific microstructure of such ZnS/ZnO bilayers including film thickness, particle size and morphology, is also modified and obtained in accordance with processing parameters. Along with thin film quality and morphology, the transmittance and reflectance of ZnS/ZnO layers can be measured by field emission SEM and UV-Vis spectroscopy. Besides the bilayer of ZnS (˜35 nm thick)/ZnO (˜50 nm thick) film with uniform thickness was successfully deposited on the optical grade PET substrates, a well-distributed layer of ZnO nanoparticles with ˜100 nm size on the top of ZnS (35 nm thick) film was also attempted. The average transmittance of these bilayer samples can reach greater 85%. Our future goal is to employ such ZnS/ZnO bilayer structure on potential organic substrates to be associated with flexible photovoltaic devices to meet desired cost-effectiveness requirements.

Rapid synthesis of CdS nanowire mesh via a simplistic wet chemical route and its NO2 gas sensing properties

2018 ◽  
Vol 42 (6) ◽  
pp. 4232-4239 ◽  
Author(s):  
Sharadrao A. Vanalakar ◽  
Vithoba L. Patil ◽  
Pramod S. Patil ◽  
Jin H. Kim
Keyword(s):  
Low Temperature ◽  
Gas Sensing ◽  
Raw Materials ◽  
Rapid Synthesis ◽  
Chemical Route ◽  
Cds Nanowire ◽  
Gas Sensing Properties ◽  
Wet Chemical ◽  
Cds Nanowires ◽  
Wet Chemical Route

In this report, 1-D interconnected CdS nanowires were prepared rapidly via a wet chemical route at relatively low temperature, using cadmium sulphate, thiourea and ammonia as raw materials.

Transparent-conducting, gas-sensing nanostructures (nanotubes, nanowires, and thin films) of titanium oxide synthesized at near-ambient conditions

2006 ◽  
Vol 21 (11) ◽  
pp. 2894-2903 ◽  
Author(s):  
Jing-Jong Shyue ◽  
Rebecca E. Cochran ◽  
Nitin P. Padture
Keyword(s):  
Thin Films ◽  
Titanium Oxide ◽  
Chemical Method ◽  
Gas Sensing ◽  
Temperature Sensitive ◽  
Ambient Conditions ◽  
Wet Chemical Method ◽  
Transparent Conducting ◽  
Anatase Titania ◽  
Wet Chemical

A template-based, electroless wet-chemical method for synthesis of nanotubes and nanowires of nanocrystalline anatase titanium oxide (titania) at 45 °C is reported. Single-nanowire electrical property measurements reveal low dc resistivities (7–21 × 10−4 Ω cm) in these titania nanowires. In the presence of 1000 parts per million of CO gas at 100 °C, the resistivity is found to increase reversibly, indicating low-temperature gas-sensing capability in these titania nanowires. Thin films of nanocrystalline anatase titania, deposited using a similar wet-chemical method, also have low room-temperature dc resistivities (6–8 × 10−3 Ω cm), and they are transparent to visible light. Nanostructure-properties relations, together with possible electrical conduction, optical absorption, and gas-sensing mechanisms, are discussed. The ability to fashion transparent-conducting and gas-sensing nanocrystalline anatase titania into nanotubes/nanowires and thin films at near-ambient conditions could open a wider field of applications for titania, including nanoelectronics, chemical sensing, solar cells, large-area windows and displays, invisible security circuits, and incorporation of biomolecules and temperature-sensitive moieties.

Nb-doped amorphous titanium oxide compact layer for formamidinium-based high efficiency perovskite solar cells by low-temperature fabrication

2018 ◽  
Vol 6 (20) ◽  
pp. 9583-9591 ◽  
Author(s):  
Youhei Numata ◽  
Ryo Ishikawa ◽  
Yoshitaka Sanehira ◽  
Atsushi Kogo ◽  
Hajime Shirai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Titanium Oxide ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Compact Layer ◽  
Niobium Doped

Low-temperature processed perovskite solar cells (PSCs) were prepared using an amorphous niobium-doped titanium oxide (Nb/TiOx) film as a compact layer (CL) combined with a brookite TiO2 mesoporous layer.

Oxide nanopowders from the low-temperature processing of metal oxide sols and their application as gas-sensing materials

2006 ◽  
Vol 118 (1-2) ◽  
pp. 105-109 ◽  
Author(s):  
Mauro Epifani ◽  
Elisabetta Comini ◽  
Raül Díaz ◽  
Jordi Arbiol ◽  
Pietro Siciliano ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metal Oxide ◽  
Gas Sensing ◽  
Low Temperature Processing

A flexible lead-free piezoelectric nanogenerator based on vertically aligned BaTiO3 nanotube arrays on a Ti-mesh substrate

RSC Advances ◽  
2016 ◽  
Vol 6 (84) ◽  
pp. 81426-81435 ◽  
Author(s):  
Ermias Libnedengel Tsege ◽  
Gyu Han Kim ◽  
Venkateswarlu Annapureddy ◽  
Beomkeun Kim ◽  
Hyung-Kook Kim ◽  
...  
Keyword(s):  
Low Temperature ◽  
Titanium Oxide ◽  
Hydrothermal Process ◽  
Lead Free ◽  
Nanotube Arrays ◽  
Titanium Oxide Nanotubes ◽  
Vertically Aligned ◽  
Ti Mesh

A novel, flexible lead-free piezoelectric nanogenerator was developed using a uniform BaTiO3 film; synthesized by in situ conversion of titanium oxide nanotubes in a low temperature hydrothermal process.

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