Thickness optical transmittance

Fig. 5.3 Optical transmittance (a) and near-normal specular reflectance (b) of CD PbS films of different thicknesses. The thickness increases from A to F over an estimated range of ca. 50 nm to <200 nm. (Adapted from Ref. 46 with permission from lOP Publishing Ltd.).

Fig. 7 shows the optical transmittance spectrum of the entire ZnO-TFT in the wavelength range between 200 nm and 2500 nm (including the glass substrate with 1.1 mm thickness). The average optical transmission in the visible part of the spectrum is 80% while at 550 nm (maximum sensitivity for the human eye) it is 85%, which indicates that transmission losses due to the ZnO-TFTs in comparison with the uncoated glass substrate are negligible... 

The samples have been prepared by e-beam evaporation of a dielectric layer followed by thermal evaporation of the silver fraction, which builds the island film, while the sandwich is completed by a further dielectric film. In every sample, intentionally the same amount of silver (corresponding to an average thickness of 4 nm, as recorded by quartz monitoring) has been embedded in a 6 nm thick dielectric film, formed from either Mgp2, LaFs, Si02, or AI2O3. The optical transmittance T and reflectance R of all films have been measured by a Perkin Elmer Lambda 19 spectrophotometer. To correlate the optical properties with the sample morphology, transmission electron microscopy (TEM) has been applied. 

Figure 1. Optical transmittance curves of Dy-SiAlON sintered at different Temperature for varied soaking time, 0.5 mm in thickness, in the range of 2.5-5.5pm.

Figure 2. Inline optical transmittance of Nd Lu20, transparent ceramic (thickness 1.4mm).

Figure 6.8 Electrical conductivity and surface resistivity comparison. Upper panel electrical conductivity results of P3HT/SWNT composite films depending on (left) different amounts of pre-separated ( ) and separated metallic (O) nanotube samples, and (right) their corresponding effective metallic SWNT contents in the films (dashed line the best fit in terms of the percolation theory equation). Lower panel Surface resistivity results of PEDOT PSS/SWNT films on glass substrate with the same 10 wt% nano tube content (O pre-separated purified sample and T separated metallic SWNTs and for comparison, blank PEDOT PSS without nano tubes) but different film thickness and optical transmittance at 550 nm. Shown in the inset are representative films photographed with tiger paw print as background.

F. 3.24 In-line optical transmittance spectra of the Zr02-doped Ho Y203 ceramics (2.14 mm thick) from the powders with different slurry concentrations. Reproduced with permission from [101]. Copyright 2015, Elsevier... 

Fig. 7.6 a Optical transmittance spectra of the 0.3 wt% Si02-doped Nd YAG transparent ceramics with different pore volume densities (C ) after sintering at vacuum (samples thickness was 2.5 mm), b Photographs of the Nd YAG ceramics corresponding to the samples in (a). Reproduced with permission from [1]. Copyright 2013, John Wiley Sons... 

Figure 8.1 Cyclic voltammetry and optical transmittance of a WO3 electrode in a LiC104-PC solution. Light source He-Ne laser (6328A). Scan rate 20mVs . Sample thickness 6OOA.

Poly(ethylene terephthalate) is used to produce fibers or is processed as a thermoplastic material by injectionmolding or blow-molding. Sorption of pyrrole in films of this polymer followed by immersion of the film in an aqueous FeCls solution produced blends of polypyrrole and poly(ethylene tere late). The 30 /zm thick film obtained presented high optical transmittance at 633 nm and a conductivity in the range of 0.03-0.1 S cm [65]. Authors suggest that polypyrrole is distributed uniformly in the free volume of the poly(ethylene tereftalate) host, forming a conducting network at low concentrations (5%). 

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