The Infra‐Red Transmission of Thin Films of Various Organic Materials

1940 ◽  
Vol 11 (2) ◽  
pp. 137-140 ◽  
Author(s):  
A. J. Wells
Keyword(s):  
Thin Films ◽  
Organic Materials ◽  
Infra Red

Local Structure and Er3+ Emission from Pseudo-Amorphous GaN:Er Thin Films

1998 ◽  
Vol 536 ◽  
Author(s):  
S. B. Aldabergenova ◽  
M. Albrecht ◽  
A. A. Andreev ◽  
C. Inglefield ◽  
J. Viner ◽  
...  
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Amorphous Matrix ◽  
Broad Band ◽  
Resonant Absorption ◽  
Absorption Bands ◽  
Host Matrix ◽  
Transmission Electron ◽  
Infra Red ◽  
Band Edge Luminescence

AbstractWe report on strong Er3+ luminescence in the visible and infra-red regions at room temperature in amorphous GaN:Er thin films prepared by DC magnetron co-sputtering. The intensity of the Er3+ luminescence at 1.535 μm corresponding to 4I13/2 → 4I15/2 transitions is greatly enhanced after annealing at 750°C. In this material GaN crystallites have formed and embedded in the continuous amorphous matrix. The crystallites are 4 to 7 nm in diameter as analyzed by high resolution transmission electron microscopy. The absorption edge, extending three orders of magnitude in absorption coefficient in the spectral range from 0.5 to 3.5 eV, is superimposed on resonant absorption bands of Er3+ ions.The total photoluminescence spectrum consists of welldefined Er3+ luminescence peaks imposed on a broad band edge luminescence from the amorphous GaN host matrix.

Engineering Properties of Organic Materials for Near Infra-Red Applications

2006 ◽  
Author(s):  
Jian Li ◽  
Evan L.. Williams ◽  
Kirsi Haavisto ◽  
Ghassan E.. Jabbour
Keyword(s):  
Organic Materials ◽  
Engineering Properties ◽  
Infra Red

SYNERGISTIC INFLUENCE OF GRAPHITE ON BIOPOLYMER COMPOSITES PROPERTIES

2015 ◽  
Vol 77 (32) ◽  
Author(s):  
Nur Munirah Abdullah ◽  
Anika Zafiah M. Rus ◽  
M.F.L Abdullah
Keyword(s):  
Thin Films ◽  
Slip Casting ◽  
Interface Morphology ◽  
X Ray ◽  
Methylene Diphenyl Diisocyanate ◽  
Current Voltage ◽  
Infra Red ◽  
Cross Linker ◽  
Biopolymer Composites ◽  
Scanning Electron

Biopolymer and its cross-linker (Methylene Diphenyl Diisocyanate, MDI) were blended by weight 2:1. This is mixed with different percentages of pretreated graphite. The mixture was prepared by slip casting as thin films, at thickness of ~0.1 mm. The interface-morphology-structure relations of graphite/ biopolymer composites was diagnosed by X-Ray Diffractometer (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Fourier transform infra-red spectroscopy (FTIR) and Ultraviolet-visible (UV-vis) spectrophotometer. The homogeneously dispersed and strong interface between the graphite with/ within the biopolymer matric influenced the current-voltage (I-V) characteristics of the thin films where the percolation threshold occurs at higher graphite loading (20 wt.%, 25 wt.% and 30 wt.%) gives conductivity of 103 - 104 S/m. Remarkably, graphite/ biopolymer composites makes it possible to prepare better mechanical behavior with stiff, strong yet tough properties compared with those of its neat counterpart.

scholarly journals Ultra-thin films for plasmonics: a technology overview

2015 ◽  
Vol 4 (3) ◽  
Author(s):  
Radu Malureanu ◽  
Andrei Lavrinenko
Keyword(s):  
Thin Films ◽  
Surface Roughness ◽  
Support Surface ◽  
New Materials ◽  
Infra Red ◽  
Plasmon Polaritons ◽  
Plasmon Propagation ◽  
Made In

AbstractUltra-thin films with low surface roughness that support surface plasmon-polaritons in the infra-red and visible ranges are needed in order to improve the performance of devices based on the manipulation of plasmon propagation. Increasing amount of efforts is made in order not only to improve the quality of the deposited layers but also to diminish their thickness and to find new materials that could be used in this field. In this review, we consider various thin films used in the field of plasmonics and metamaterials in the visible and IR range. We focus our presentation on technological issues of their deposition and reported characterization of film plasmonic performance.

The infra-red spectrum of thin films of sodium borohydride

1960 ◽  
Vol 16 (9) ◽  
pp. 1054-1059 ◽  
Author(s):  
Casper J.H. Schutte
Keyword(s):  
Thin Films ◽  
Sodium Borohydride ◽  
Infra Red
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