The PL peak energies of OPS and AOPS samples have shifted in small energy ranges centered at about 1.61 and 1.59 eV, respectively. Each Raman spectrum was fitted with an amorphous and a crystalline component. The crystalline component was used to determine the sizes of nanometer Si particles (...
The n-Si substrates used here were not transparent in the IR region and as such FTIR spectra of the DLC films deposited here could not be recorded in the transmission mode. FTIR spectrum recorded in the reflection mode in the range of 4000 and 400 cm−1 for a representative DLC film...
3.3Absorption spectroscopy at UV–Vis band The absorption spectroscopy at the UV–Vis band is able to be employed for investigating the optical features of the Nd2O3nanostructure. Figure3demonstrates the absorption spectrum of the Nd2O3nanostructure at the UV–Vis band with a wavelength from 200...
An experimental study is presented involving the fabrication and analysis of a relatively new structure n-ZnSe/p-Si/n-Si heterojunction phototransistor having a high photo-current responsivity in the short-wavelength spectrum. Utilising photoluminescence (PL) spectroscopy and cyrosystems to investigate ...
In this framework, poly-Ge on Si thin film solar cell technology has been largely established due to its successful commercialization based on its high absorption coefficient in the infrared region of electromagnetic spectrum [7]. Under these circumstances, nano/polycrystalline germanium on Si appears...
ctance spectrum shows the range of the light response of a material. TheAUgoVo-dvipshiboltoecdatiafflyusstemruesfltemctaaxnimceizesptheecturtuilmizastihoonwofstthheenraatunrgaleliogfhtth, we hliigchhtmreeasnpsotnhasteitomf ausmt aterial. A gooAdghopfoahTvolioedhgtaehpotlUhacrraVoegstt-eoa...
Fig. 2. Theoretical (gray line) IR spectrum of [PW12O40]3− and experimental (dark line) IR spectrum of its K salt. Vanadium substituted Keggin anions show additional bands in the IR spectrum compared to the non-substituted one because of their lower symmetry and vibrational modes involving...
Si nanocrystalsSapphireOptoelectronicsXPSHREELSThe system of the nanoinclusions of Si in the SiO2 and Al2O3 matrix (SiO2:Si, Al2O3:Si) attracts great attention due to its ability of the luminescence in visible and near-IR range of spectrum. The influence of the P ion alloying on the ...
(b) VIS-Raman 520 cm−1 peak signal of the buried c-Si in the stack nc-Si:H(n)/SiOx-Seed/a-Si:H(i)/c-Si used as a metric of the transparency of the stack at 442 nm. The stack thickness is the flat-equivalent thickness measured on glass plus 8.3 nm for the a-Si:H(i)...
HREELSThe system of the nanoinclusions of Si in the SiO 2 and Al 2O 3 matrix (SiO 2:Si, Al 2O 3:Si) attracts great attention due to its ability of the luminescence in visible and near-IR range of spectrum. The influence of the P ion alloying on the electronic structure of ...