Near infrared reflectivity at high temperature of layers of silicon containing oxygen

1978 ◽  
Author(s):  
S. O. Sari ◽  
K. D. Masterson ◽  
H. S. Gurev
Keyword(s):  
High Temperature ◽  
Near Infrared ◽  
Infrared Reflectivity

Improvement of Wall Plug Efficiency in Near Infrared Lateral Single-mode LDs at High Temperature

2013 ◽  
Vol 133 (8) ◽  
pp. 1471-1475
Author(s):  
Tetsuya Yagi ◽  
Takuto Maruyama ◽  
Masayuki Kusunoki ◽  
Naoyuki Shimada ◽  
Muneharu Miyashita
Keyword(s):  
High Temperature ◽  
Near Infrared ◽  
Single Mode ◽  
Wall Plug Efficiency

A Cooperative Afterglow Enhancement in Second Biological Window of Na2CaSn2Ge3O12 with Co-doping of Pr3+-Yb3+

2021 ◽  
Author(s):  
Xiuping Gao ◽  
Tao Liu ◽  
Xiaohui Jiang ◽  
Kai Huang ◽  
Runlin Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Near Infrared ◽  
Co Doping

A novel near-infrared persistent luminescent phosphor Na2CaSn2Ge3O12 (NCSGO) doped with Ho3+, Er3+, Tm3+ and Yb3+ was synthesized by high-temperature solid-state reaction. The afterglow emission bands located at 1553nm, 801nm and...

scholarly journals Cesium polytungstates with blue-tint-tunable near-infrared absorption

RSC Advances ◽  
2020 ◽  
Vol 10 (18) ◽  
pp. 10491-10501
Author(s):  
Satoshi Yoshio ◽  
Masao Wakabayashi ◽  
Kenji Adachi
Keyword(s):  
Optical Properties ◽  
High Temperature ◽  
Infrared Absorption ◽  
Near Infrared

Revisiting Wöhler's method (1824), Cs-doped tungsten bronzes were synthesized by reducing Cs-polytungstate at high temperature, and were pulverized into nanoparticles for determining their optical properties.

High-temperature infrared-reflectivity study of the soft mode inKTa1−xNbxO3for a Nb concentrationx=0.018

1983 ◽  
Vol 28 (10) ◽  
pp. 6041-6050 ◽  
Author(s):  
D. Rytz ◽  
M. D. Fontana ◽  
J. L. Servoin ◽  
F. Gervais
Keyword(s):  
High Temperature ◽  
Soft Mode ◽  
Infrared Reflectivity

High-temperature infrared reflectivity spectroscopy in lead chloride

1988 ◽  
Vol 21 (27) ◽  
pp. 4727-4736 ◽  
Author(s):  
V Zelezny ◽  
P Simon ◽  
F Gervais ◽  
C Barta
Keyword(s):  
High Temperature ◽  
Lead Chloride ◽  
Infrared Reflectivity

Molten salt synthesis of YMnO3 powder with high near-infrared reflectivity

2018 ◽  
Vol 229 ◽  
pp. 171-173 ◽  
Author(s):  
Yu Chen ◽  
Yan Ma ◽  
Zhoufu Wang ◽  
Xitang Wang ◽  
Hao Liu ◽  
...  
Keyword(s):  
Molten Salt ◽  
Near Infrared ◽  
Molten Salt Synthesis ◽  
Infrared Reflectivity

scholarly journals Synthesis of high-performance magnetic garnet materials and garnet-bismuth oxide nanocomposites using physical vapor deposition followed by high-temperature crystallization

2011 ◽  
Vol 83 (11) ◽  
pp. 1971-1980 ◽  
Author(s):  
Mohammad Nur-E-Alam ◽  
Mikhail Vasiliev ◽  
Kamal Alameh ◽  
Viacheslav Kotov
Keyword(s):  
High Temperature ◽  
Optical Sensors ◽  
Physical Vapor Deposition ◽  
High Performance ◽  
Near Infrared ◽  
Rf Sputtering ◽  
Nanocomposite Films ◽  
Sputtering Deposition ◽  
Garnet Phase ◽  
Iron Garnet

Bi-substituted iron garnet (Bi:IG) compounds synthesized in thin film form are the best semi-transparent magneto-optical (MO) materials for applications in magnetic recording, optical sensors, and photonics. These materials can possess attractive magnetic properties and the highest specific Faraday rotation in the visible and near-infrared spectral regions, if the deposited layers contain a high volumetric fraction of the garnet phase and possess high-quality surfaces and microstructure. In this paper, we study the effects of various deposition and annealing process parameters on the properties of Bi:IG and garnet-oxide nanocomposite films of several composition types fabricated using radio-frequency (RF) sputtering deposition followed by high-temperature isothermal crystallization. We also investigate the kinetics of garnet phase formation within a garnet-Bi-oxide nanocomposite material.

Deposition & Characterization of TiAlON & TiMoAlON Solar Absorber Coatings for High Temperature Photothermal Applications Prepared by PEM Controlled Dual-Gas Reactive Magnetron Sputtering

2012 ◽  
Vol 538-541 ◽  
pp. 344-349 ◽  
Author(s):  
Hai Bin Geng ◽  
Tao Wu ◽  
Cheng Wei Ma
Keyword(s):  
High Temperature ◽  
High Performance ◽  
Near Infrared ◽  
Solar Spectrum ◽  
Single Crystal Silicon ◽  
Crystal Silicon ◽  
Precise Control ◽  
Silicon Chips ◽  
Solar Absorber ◽  
Absorbing Layer

A novel Plasma Emission Monitoring (PEM) controlled N2-O2 dual gas reactive dcMS method is proposed for deopsiting TiAlON and TiMoAlON solar absorber coatings. Working in a 'cheated' feedback mode, the PEM controller ensures smooth & precise control of O/N ratio in obtained oxy-nitrides without occuring of serious target poisoning. The coatings have three functional layers including the infrared reflector, the absorbing layer, and the antireflection layer. The absorbing layers of the two kinds of coatings are both designed to have a gradually change Al and/or O content. However, the TiAlON coatings have a single TiAlON absorber layer while the TiMoAlON have a tandem absorber composed of a Mo doped TiAlN layer and a Mo doped TiAlON layer. Single-crystal silicon chips and glass slides are used as substrates to deposit the coatings and to characterize the photothermal conversion properties and thermal stability of the coatings by using SEM, UV-visible-near infrared photospectrometer, and solar spectrum emissiometer. The experimtal results show that the tandem TiMoAlON coating exhibits superior theraml stability up to 550oC. After annealing in air at 500oC for 8hrs, it exhibits higher absorptance than as-deposited status. The annealed TiMoAlON coating has a broad absorbing peak covering 400-800nm, which is beneficial to collect the majority energy in solar radiation. Due to its higher absorptivity and lower normal emissivity than the TiAlON coatings, the TiMoAlON coating yields a high solar selectivity (α/ε≈19) at room temperature. However, at 500oC, its ε value increases from 0.05 to about 0.25 which might attribute to its excessive thicknesses of the sublayers. The above results demonstrate that the proposed method is a convenient way for preparing high performance oxy-nitride solar absorber coatings which are suitable for non-vacuum high temperature photothermal applications.

Analysis of Influence of High Temperature Homogenizing on UV Transmittance of Quartz Glass

2016 ◽  
Vol 680 ◽  
pp. 285-288 ◽  
Author(s):  
Zhu Feng Shao ◽  
Ya Nan Jia ◽  
Chuan Dong Rao ◽  
Zai Kui Xiang ◽  
Mei Sui ◽  
...  
Keyword(s):  
High Temperature ◽  
Quartz Glass ◽  
Near Infrared ◽  
Homogenization Temperature ◽  
Optical Elements ◽  
Factors Affecting ◽  
Synthetic Quartz ◽  
Homogenization Process ◽  
Temperature Homogenization ◽  
Uv Transmittance

Synthetic quartz glass is an excellent transmittance material in ultraviolet (UV), visible and near-infrared bands. Homogenization process to synthetic quartz glass optical elements is done in order to make the composition and structure more uniform. The homogenization temperature is above 1800°C. After high-temperature homogenization, the UV transmittance of quartz glass appears a certain extent of decline in the edge partition., After high temperature homogenization process, it is found that the closer the layer to the graphite vessel, the stronger influence on UV transmittance will be. This conclusion is made by comparing the UV transmission of the quartz glass in different layers. Furthermore, the factors affecting the UV transmittance is also analyzed in this article.

High near‐infrared reflectivity modulation with polycrystalline electrochromic WO3films

1983 ◽  
Vol 43 (12) ◽  
pp. 1093-1095 ◽  
Author(s):  
R. B. Goldner ◽  
D. H. Mendelsohn ◽  
J. Alexander ◽  
W. R. Henderson ◽  
D. Fitzpatrick ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Reflectivity
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