scholarly journals Investigation of Rapid Gas-Sensitive Properties Degradation of ZnO–SnO2 Thin Films Grown on the Glass Substrate

Chemosensors ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 40
Author(s):  
Victor V. Petrov ◽  
Ekaterina M. Bayan ◽  
Soslan A. Khubezhov ◽  
Yuri N. Varzarev ◽  
Maria G. Volkova
Keyword(s):  
Glass Substrate ◽  
Film Surface ◽  
Adsorbed Water ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Temperature Conductivity ◽  
Soda Lime Glass Substrate ◽  
Xps Spectra ◽  
Oh Groups ◽  
Glass Substrates

ZnO–SnO2 films with a thickness of up to 120 nm have been prepared on glass substrates by pyrolysis at 550 °C of three spin-coated organic precursors films. Films of four compositions were obtained on glass substrates. The prepared films were characterized by SEM, XRD, and XPS analysis. Electrophysical studies have shown that the activation energy of the temperature conductivity for all films is equal to 0.75 eV. While the gas-sensitive characteristics by CO treatment in low concentrations at a temperature of 200–300 °C was studied, their rapid degradation was found. Studies using the XPS method have shown that ZnO–SnO2 films contain sodium, which is diffused from the soda-lime glass substrate during the film formation. Studies of XPS spectra after CO treatment have shown that the film surface is almost 50% composed of adsorbed water molecules and OH groups. OH groups are part of the sodium, tin, and zinc hydroxides formed on the surface. In addition, zinc hydrocarbonates are formed on the surface of the films. The detected insoluble compounds lead to the degradation of gas-sensitive properties of ZnO–SnO2 films.

Preparation of CuInGaSe2 Absorber Layer by Nanoparticles-Based Spray Deposition

2004 ◽  
Vol 836 ◽  
Author(s):  
Ki-Hyun Kim ◽  
Young-Gab Chun ◽  
Byung-Ok Park ◽  
Kyung-Hoon Yoon
Keyword(s):  
Spray Deposition ◽  
Soda Lime ◽  
Inert Atmosphere ◽  
Absorber Layer ◽  
Step Motor ◽  
Soda Lime Glass ◽  
Soda Lime Glass Substrate ◽  
Glass Substrates ◽  
Spray System ◽  
Cigs Nanoparticles

ABSTRACTCIGS nanoparticles for the CIGS absorber layer have been synthesized by low temperature colloidal routes. The CIGS absorber layers for solar cells have been prepared by spray deposition of CIGS nanoparticle precursors (∼20 nm) in glove box under inert atmosphere. An automatic air atomizing nozzle spray system with computer controlled X-Y step motor system was used to spray. The nanoparticle precursor CIGS film was deposited onto molybdenum-coated soda-lime glass substrates (2.5 cm × 5.0 cm) heated to 160°C. The film thickness in the range of 2 μm ± 0.3 μm was attained by spraying of 3 mM colloidal over an area of 12.5 cm2. The coalescence between particles was observed in the CIGS absorber layer under post-treatment of over 550 °C. This is related to the reactive sintering among the nanoparticles to reduce surface energy of the particles. The CuxSe thin film, formed on Mo film by evaporation, improved adhesion between CIGS and Mo layers and enhanced the coalescence of the particles in the CIGS layer. These are closely related to the fluxing of Cu2Se phase which has relatively low melting temperature. The CdS buffer layer was deposited on the CIGS/Mo/soda-lime glass substrate by chemical bath deposition. The CIGS nanoparticles-based absorber layers were characterized by using energy dispersive spectroscopy (EDS), x-ray diffraction (XRD) and high-resolution scanning electron microscopy (HRSEM).

Slump Molding of Microchannel Arrays in Soda-Lime Glass for Bioanalytical Device Development

2014 ◽  
Vol 2 (4) ◽  
Author(s):  
Richard E. Billo ◽  
Paul A. Wilson ◽  
John W. Priest ◽  
Mario Romero-Ortega ◽  
Shannon R. Brunskill ◽  
...  
Keyword(s):  
Glass Substrate ◽  
High Speed ◽  
Chemical Reactivity ◽  
Soda Lime ◽  
Nerve Tissue ◽  
Mold Material ◽  
Soda Lime Glass ◽  
Molding Process ◽  
Soda Lime Glass Substrate ◽  
Lab On Chip

A slump molding process was developed to place microchannel geometries in a soda-lime glass substrate for a lab-on-chip bioanalytical device. The process was developed to overcome the biological and chemical reactivity associated with current polymer lab-on-a-chip substrates, and as an alternative to using more expensive glass material. A high speed micro mill and UV laser micromachining center were used to fabricate the negative geometries in the graphite mold material that was used. The slumping process of the soda-lime glass was done using a glass kiln. Microchannel dimensions were in the mesa scale range of 50 μm width × 10 μm depth. The heating schedule for slump molding of the soda-lime glass to take its final shape to these dimensions was determined and documented. The functionality of the slumping process and resultant soda-lime glass device was validated through murine nerve tissue experiments conducted through the bioanalytical device that was developed. The research represented a novel use of slump molding, a process traditionally known for producing artistic works for: (a) embossing engineered microchannels and (b) reliably processing a soda-lime glass substrate, a material known to be difficult to work with due to its poor physical properties.

Preparation and Characterization of Cu-Ga-Se Films of Ordered Vacancy Compound

2003 ◽  
Vol 763 ◽  
Author(s):  
S. Nishiwaki ◽  
S. Siebentritt ◽  
M. Ch. Lux-Steiner
Keyword(s):  
Short Circuit ◽  
Short Circuit Current ◽  
Bottom Layer ◽  
Soda Lime ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Chalcopyrite Structure ◽  
Soda Lime Glass ◽  
Soda Lime Glass Substrate ◽  
Glass Substrates

AbstractCu-Ga-Se films with an orderd vacancy compound (OVC) structure were prepared at substrate temperature about 500 °C by thermal co-deposition. With a preparation under extremely Se excess condition, films of the OVC were synthesized within the compositional ratio of 0.73 ≤ [Ga]/([Cu]+[Ga]) ≤ 0.86 along Cu2Se-Ga2Se3 pseudo binary system. The growth on soda-lime glass substrates improves the crystallinity compared to that on alkali-free glass. An increase in the optical bandgaps of OVC films from 1.85 eV to 1.94 eV was observed with an increase in the Ga content of the films. The deposition of Cu and Se onto Ga2Se3 films resulted in a vertically inhomogeneous film: the bottom layer with the OVC structure and the top layer with the chalcopyrite structure. A solar cell using the CuGa5.0Se8.1 film within a ZnO/CdS/CuGa-Se/Mo/soda-lime glass substrate structure showed an open circuit voltage of 947 mV, an efficiency of 2.2 %, a short circuit current density of 4.5 mA/cm2, and a fill factor of 0.52 (Air Mass 1.5, 0.5 cm2, total area).

Substrate Issues for Advanced Display Technologies

1997 ◽  
Vol 471 ◽  
Author(s):  
Dawne M. Moffatt-Fairbanks ◽  
David L. Tennent
Keyword(s):  
High Temperature ◽  
Glass Substrate ◽  
Substrate Surface ◽  
Temperature Stability ◽  
Soda Lime ◽  
Thermal Shrinkage ◽  
Soda Lime Glass ◽  
High Temperature Stability ◽  
Active Matrix ◽  
Glass Substrates

ABSTRACTThe glass substrate plays a crucial role in the successful performance of advanced flat panel displays (FPDs). These FPD technologies include active-matrix liquid crystal displays (AMLCD) and Plasma Displays (PDP). Although these displays are different in the way in which they operate, there are several common substrate requirements, all of which are determined by the process for making the entire display. These include issues relating to substrate size, thermal shrinkage, high temperature stability, and substrate surface quality.While AMLCD technology is moving toward larger sizes, PDPs are currently large size displays, requiring large glass substrates. The primary issue in using larger substrates is minimizing distortion of the glass during high temperature processes, both viscous sag and shrinkage. These are related to the high temperature thermal stability which, in turn, is largely determined by the strain point and thermal history of the substrate. Finally, thickness uniformity and surface flaws are critical to the performance of the final display.Coming's Code 1737 glass substrate meets the requirements for AMLCDs and has become the industry standard. Corning/Saint-Gobain Code CS25 glass is a new glass that has significant benefits over soda-lime glass for PDP applications. This paper will discuss these two glasses in terms of the above-mentioned issues.

Investigation on the Properties of Sb-Doped CdTe Thin Films

2013 ◽  
Vol 275-277 ◽  
pp. 2018-2022 ◽  
Author(s):  
Song Feng ◽  
Rong Ping Li ◽  
Lei Tian ◽  
Kai Zou ◽  
Yong Sheng Liu
Keyword(s):  
Thin Films ◽  
Optical Absorption ◽  
Film Surface ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Preferential Growth ◽  
Cubic Crystal ◽  
Glass Substrates ◽  
Cdte Thin Films ◽  
Preferential Growth Orientation

Pure CdTe thin films and metal Sb-doped CdTe thin films are prepared on soda lime glass substrates by vacuum evaporation method. The prepared films have a cubic crystal structure with a preferential growth orientation along CdTe (111) crystal orientation. The experimental results show that the film surface doped Sb is more compact and uniform. And doping Sb in pure CdTe thin films significantly enhance the optical absorption and reduce the width of the band gap, which means that the optical absorption range of CdTe thin films can be widened. Finally, on the aspect of electrical properties, the resistivity of the thin films has significantly been lower.

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