scholarly journals Optical and mechanical characteristics of zinc sulphide-thorium fluoride mixed composition thin films for use in the near infrared region (1–10µm)

1998 ◽  
Vol 21 (3) ◽  
pp. 227-231
Author(s):  
A Basu ◽  
B S Verma ◽  
T K Bhattacharyya ◽  
M Kar ◽  
R Bhattacharyya
Keyword(s):  
Thin Films ◽  
Near Infrared ◽  
Mechanical Characteristics ◽  
Infrared Region ◽  
Zinc Sulphide ◽  
Mixed Composition ◽  
Thorium Fluoride ◽  
Near Infrared Region

scholarly journals Electrochromism in Electropolymerized Films of Pyrene-Triphenylamine Derivatives

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 73 ◽  
Author(s):  
Tian-Ge Sun ◽  
Zhi-Juan Li ◽  
Jiang-Yang Shao ◽  
Yu-Wu Zhong
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Response Time ◽  
Near Infrared ◽  
Contrast Ratio ◽  
Infrared Region ◽  
Cyclic Stability ◽  
Spectral Changes ◽  
Near Infrared Region ◽  
Ratio Response

Two star-shaped multi-triphenylamine derivatives 1 and 2 were prepared, where 2 has an additional phenyl unit between a pyrene core and surrounding triphenylamine units. The oxidative electropolymerization of 1 and 2 occurred smoothly to give thin films of polymers P1 and P2. The electrochemistry and spectroelectrochemistry of P1 and P2 were examined, showing two-step absorption spectral changes in the near-infrared region. The electrochromic properties, including contrast ratio, response time, and cyclic stability of P1 and P2 were investigated and compared. Thin film of P2 displays slightly better electrochromic performance than P1, with a contrast ratio of 45% at 1475 nm being achieved.

Effects of ITO Electrode on Electrochromic Properties of WO3 Thin Films in Visible and Near-Infrared Region

2020 ◽  
Vol MA2020-02 (32) ◽  
pp. 2069-2069
Author(s):  
Yasuhiro Ayauchi ◽  
Yoshio Abe ◽  
Midori Kawamura ◽  
Kyung Ho Kim ◽  
Takayuki Kiba
Keyword(s):  
Thin Films ◽  
Near Infrared ◽  
Infrared Region ◽  
Electrochromic Properties ◽  
Ito Electrode ◽  
Near Infrared Region ◽  
Wo3 Thin Films

Thickness-dependent free-electron relaxation time of Au thin films in near-infrared region

2016 ◽  
Vol 10 (3) ◽  
pp. 033009 ◽  
Author(s):  
Ming-Ying Zhang ◽  
Zi-Yi Wang ◽  
Tian-Ning Zhang ◽  
Yun Zhang ◽  
Rong-Jun Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Relaxation Time ◽  
Free Electron ◽  
Near Infrared ◽  
Infrared Region ◽  
Electron Relaxation ◽  
Electron Relaxation Time ◽  
Near Infrared Region ◽  
Au Thin Films

SYNTHESIS AND CHARACTERIZATION OF ZnS THIN FILMS PREPARED BY RESISTIVE HEATING TECHNIQUE

2018 ◽  
Vol 25 (04) ◽  
pp. 1850080
Author(s):  
S. NIMRAH ◽  
S. HONEY ◽  
M. T. BHATTI ◽  
A. F. KHAN ◽  
S. NASEEM ◽  
...  
Keyword(s):  
Thin Films ◽  
Near Infrared ◽  
Optical Transmittance ◽  
Infrared Region ◽  
Zinc Sulphide ◽  
Optical Investigation ◽  
Resistive Heating ◽  
High Optical Transmittance ◽  
Before And After ◽  
Different Temperatures

In the present work, Zinc Sulphide (ZnS) thin films deposited by resistive heating technique on BK-7 glass substrate. Optical and structural characterizations of ZnS films have been carried out along with the post-deposition annealing at different temperatures. The thickness of the film is monitored by quartz crystal monitor and found to be 500[Formula: see text]nm. Fourier transform infrared (FTIR) spectroscopy provides the qualitative analysis of ZnS film before and after annealing at different temperatures. The optical investigation shows that the as-deposited and annealed ZnS film display the high optical transmittance of (64–68%) in the visible/near infrared region. The optical energy gaps of present as-deposited and annealed ZnS film vary in the range of 3.32–3.18[Formula: see text]eV with the change in annealing temperature.

Ligand Influence Versus Electronic Configuration of d-metal Ion in Determining the Fate of NIR Emission from LnIII Ions: A Case Study with CuII, NiII and ZnII Complexes.

2021 ◽  
Author(s):  
Abhineet Verma ◽  
Sk Saddam Hossain ◽  
Sailaja S Sunkari ◽  
Joseph Reibenspies ◽  
Satyen Saha
Keyword(s):  
Metal Ion ◽  
Selection Rule ◽  
Near Infrared ◽  
Electronic Configuration ◽  
Infrared Region ◽  
Direct Excitation ◽  
Characteristic Emission ◽  
Nir Emission ◽  
Near Infrared Region

Lanthanides (LnIII) are well known for their characteristic emission in the Near-Infrared Region (NIR). However, direct excitation of lanthanides is not feasible as described by Laporte’s parity selection rule. Here,...

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