Optical transmission spectra

Fig. 17.12 Top Outline of experimental setup for fiber taper coupling to liquid embedded microdroplet resonators. Bottom Measured optical transmission spectra form a fiber taper coupled 600 pm diameter liquid embedded microdroplet resonator. Reprinted from Ref. 35 with permission. 2008 Optical Society of America...

FIGURE 1.4 Optical transmission spectra of (a) PEDOT-PSS and (b) PANI-CSA. 

Fig. 6.1 Optical transmission spectra of various Cu S films, (a) CU2S (b) Cui.gS (c) Cui 4S (d) CuS. (Adapted from Ref. 43, with permission from Elsevier Science (USA)).

Optical transmission spectra gave an estimated bandgap of 3.3 eV. From the spectra, the films showed some scattering, with the most transparent films having an approximate integrated transmission over the visible region of 70%, obtained from a solution containing 0.05 M/1 dimethylamine borane. This correlated with... 

From the optical transmission spectra, a bandgap of 1.50 eV was found for the most stoichiometric (in terms of Cu In 1 the S content was always found to be low) films. This value dropped slightly for nonstoichiometric films [39]. Resistivities varied with composition, from ca. 50 O-cm for In-rich films down to ca. 0.1 D-cm for very Cu-rich ones [36]. 

Fig. 10.2 Optical transmission spectra of CdSe films deposited at 10°C (top) and 80°C (bottom) with varying NTA Cd molar ratios (shown in the figures). The bandgaps estimated from the spectra are indicated by the thin vertical lines. (Adapted from Ref. 8.)...

In Ref. 26, optical transmission spectra of films deposited nsing Cdli in a NH3/NH4/thiourea bath were substantially blue-shifted (to 2.63 eV) from the normal CdS absorption. While no crystal size was given, from the XRD spectrum given in the paper it appears that the crystal size was considerably larger than 10 nm, and therefore the canse of the bine shift is not clear. No snch shift was seen for fdms deposited under similar conditions but using CdCli instead of the iodide. 

Fig. 20. Optical transmission spectra of 2-nm thick films of Ga rMntAs with Jt = 0.043 and low-temperature grown GaAs at 10 K (Kuroiwa et al. 1998).

Figure 16-14. a) Optical transmission spectra of NiAl204 (single crystals) at various high temperatures. b) Relaxation of the extinction after a sudden temperature change in NiAl204. T0 = 700 °C, r, = 600°C, A = 640 nm [K.D. Becker, F. Rau (1987)]. 

Figure 7. Optical transmission spectra for the entire ZnO-TFT structure mcluding the glass substrate, were it is possible to observe that the ZnO-TFT is fully transparent to visible tight. For comparison the optical transmission spectra for the glass substrate (1.1 mm thickness), the ITO, and the ITO/ATO frhns are also shown. The baseline and reference were measured in air to quantify the total amount of transmitted light. The lower part shows a photograph of a glass substrate (2.5 x 2.5 cm ) with ZnO based TFTs.

Figure 3 Optical transmission spectra of silica and nonoxide glasses. ZBLAN glass composition is given in Figure 12...

Fig. 9.9 Optical transmission spectra of CdSe films deposited at different temperatures in the presence and absence of illumination solid curves, 6, 24 and 55 C, dark dashed curves, 6 and 55 °C, illuminated dotted curve, 24 °C, illuminated. (After ref. [35])...

Fig. 22 Optical transmission spectra of 100-nm-thick MDMO-PPV PCBM (1 4 by wt.) films spin cast onto glass substrates from either toluene (dashed line) or chlorobenzene (solid line) solutions (a). Incident photon to collected electron (IPCE) spectra (b) and current-voltage characteristics (c) for photovoltaic devices using these films as the active layer. (Reprinted with permission from [34], 2001, American Institute of Physics)...

Fig. 10.19. The optical transmission spectra of undopcd silica and iliioridc glass...

Optical transmission spectra of the films irradiated with H+ ions are shown in Figure 9.13a. A maximum transmittance of about 75% is observed for the as-deposited film whereas the transmittance is decreased for the ion-implanted samples. From the transmittance data, the refractive index and extinction co-efficient are evaluated. The index of refraction value of n=2 and the extinction co-efficient value of nearly k=0 in the visible region is obtained and these values are typical of most of the spinel transparent conducting oxide (TCO) materials. 

The optical transmission spectra of polycrystalline films are shown in Fig. 1. The spectrum clearly arises primarily from an np ns transition. The peak positions correlate well with the corresponding dissociation transitions in the gas phase. The anisotropy in the solid leads to a small orientation dependence of the peak position in the singlecrystal reflectance spectrum of Na (C222)Na . Recent unpublished work in our laboratory showed that the effect is much larger in Li (C21 l)Cs , which forms extended chains of ceside anions.This orientation dependence is a natural consequence of the removal of excited p-state degeneracy in the anisotropic solid. 

The optical absorption spectra of intercalated 2H-M0S2 did not show appreciable changes on alkah metal intercalation up to concentrations of 30%, where a transition into a metallic phase at room temperature and a further transition into a superconductor at about 3-7 K was reported [139, 140]. Because the concentration of the intercalating metal atoms in the IF nanoparticles did not exceed 10%, no changes in the optical transmission spectra were anticipated nor were they found to occur. Also, the intercalation of alkah atoms in the IF particles induces n-type conductivity of the host. 

Fig. 12.12 Calculated optical transmission spectra of the planar cholesteric texture as functions of the electric voltage applied (unpolarized light). Principal refraction indices used are ri = 1.550, = 1.474, for other parameters see Pig. 12.11...

FIGURE 33 Optical transmission spectra of the wavelength channel selector when only one SOA gate switch is activated successively. 

Fig. 10 shows the optical transmission spectra of films obtained in two ways. Transparency of films was about 90%. At long wavelengths there is a reduction of the transmission coefficient for the film SnO obtained by magnetron sputtering. The absence of a similar reduction for the films prepared by sol-gel technique indicates a lack of tin particles in films and, consequently, a better stoichiometry of the films of tin dioxide. 

Fig. 10. Optical transmission spectra of SnOx films 1 - glass, 2 - film, deposited by the sol-gel technique, 3 - film deposited by magnetron sputtering.

Fig. 20. Optical transmission spectra of glass substrate and thin SnOx films, deposited by magnetron sputtering (pressure 1 Pa of Ar-02 mixture) and treated by H-plasma and annealing 1 is a spectrum of substrate (glass), 2 - after deposition of SnOx film on glass, 3 - deposition + H-plasma 4 - deposition + H-plasma + annealing at 550°C (1 h) ...

Fig. 21. Optical transmission spectra the glass substrate (1) thin SnOx films on a glass substrate after deposition by magnetron sputtering (2) and treatment by oxygen (3) and hydrogen (4) plasma.

Fig. 22. Optical transmission spectra of Sn02 films after isothermal annealing at 400°C 1 - glass substrate, 2 - the film after deposition and annealing for 15 minutes,...

Figure 14-12. Optical transmission spectra oflTO-coated glass substrates coated with PhSi03/2 thick films heat-treated at various temperatures (a) for as-prepared film (b)-(e) for the films heat-treated at 100° C, 200° C, 300° C and 400° C, respectively (f) for the ITO-coated glass substrate without the film (Hasegawa, 2000).

Figure 30-14. Optical transmission spectra in a near infrared region, (a) is for a silica substrate, (b) for the substrate coated with not patterned ZK>2 film, and (c) for the substrate coated with a two-dimensionally patterned ZrOz film of island type (Tohgie, 2003).

Figure 3 X-ray PA spectra normalized with optical transmission spectra (PAS log/o//t), where /q and l denote the incident and transmitted intensity, respectively, at the K-edge region for different copper compounds. (A) Pure Cu, (B) CU2O and (C) CulnSe2. Reproduced with permission of IGP AS, Trondheim, Norway from Toyoda T, Masujima T, Shiwaku H and Ando M (1995) Proceedings of the 15th International Congress on Acoustics, Vol 1,443.

Fig. 4 Optical transmission spectra of Ti ZnO annealed under ammonia.

Figure 5.30 Optical transmission spectra for Zn0.95V0.05O film. Typical absorption peaks of V ions are indicated with arrows. (After Ref [9].)...

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