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1
100%
Optica Applicata
2010 Vol. 40, nr 4 1007--1012
EN The photoinduced changes of absorption within the spectral range 200-800 nm and optical second harmonic generation caused by illumination by the cw second harmonic generation of the Nd:YAG laser (? = 532 nm) and power about 400 mW were investigated. We have established that increasing the time of i[...]
2
80%
Opto - Electronics Review
EN Dye-sensitized solar cells (DSSCs) were prepared using various food dyes. Food dyes are economically superior to organometallic dyes since they are nontoxic and inexpensive. The spectrophotometric evaluation of chosen food dyes in solution and on a TiO2 substrate show that the dyes form J[...]
3
80%
Optica Applicata
EN The direct current conduction and electrical relaxation currents in nickel-doped porous silica glasses were investigated by using the thermally stimulated polarisation and depolarisation current techniques in a wide temperature range. Optical absorption measurements and transmission electron microsc[...]
4
80%
Optica Applicata
EN The spectra of optical absorption, luminescence excitation and photoluminescence in the range of 200-750 nm in the Cu-Cd-photochromic glasses were measured. As a matrix of photochromic glass the sodium-borosilicate glass was used. The absorption within the UV wavelength range (200-300 nm) is connect[...]
5
70%
Optica Applicata
2010 Vol. 40, nr 2 397--401
EN The optical characteristics of silver nanoparticles embedded in a surface layer of commercial soda lime silica glass have been analysed. Additional results were obtained by the transmission electron microscopy observations and the selective area electron diffraction patterns. In this report, we have[...]
6
70%
Materials Science Poland
2008 Vol. 26, No. 3 527--545
EN PbO–MoO3–B2O3 glasses containing various proportions of NiO (ranging from 0 to 1.0 mol %) have been prepared. A number of methods viz., differential thermal analysis, spectroscopic (IR and UV-Vis optical absorption, and ESR spectra) and dielectric properties (ĺ', tanä, a.c. conductivity óac over a r[...]
7
70%
Materials Science Poland
2016 Vol. 34, No. 2 368--373
EN This work presents a study on the surface morphology, structure and optical behavior of stable phase cadmium sulphide (CdS) nanoparticles synthesized via co-precipitation technique. Scanning electron microscopy (SEM) analysis has been employed to study a cluster formation in the aggregated nanoparti[...]
8
70%
Materials Science Poland
2015 Vol. 33, No. 3 501--507
EN The results of multi-angle ellipsometrical measurements of thermally evaporated Inx(AsSe3)1-x (x = 0, 0.01, 0.05) films are presented. Optical parameters n and Eg of thin Inx(AsSe3)1-x films show that indium at[...]
9
70%
Mineralogia
EN The green colour of prasiolite, defined as naturally occurring transparent macrocrystalline α-quartz with primary colouration, results from the optical absorption centred at ∼13,660 cm-1 and attributed to the FeVI2+→FeVI3+ intervalence charge transfer (Platonov et al. 1992). However, optical absorpt[...]
10
61%
Optica Applicata
2010 Vol. 40, nr 2 427--438
EN Optical absorption, luminescence excitation, and emission spectra as well as luminescence kinetics of the Sm- and Yb-doped glasses with lithium tetraborate (Li2B4O7) composition were investigated and analysed. The Sm- and Yb-doped lithium tetraborate glasses of high optical quality were obtained in [...]
11
61%
Optica Applicata
2010 Vol. 40, nr 2 413--426
EN A series of Eu- and Pr-doped glasses with SrO–2B2O3 (or SrB4O7) composition were obtained and their spectroscopic properties were investigated. The SrB4O7 polycrystalline compounds were synthesised at T = 1300 K using high purity strontium carbonate (SrCO3) and boric acid (H3BO3). The Eu and Pr impu[...]
12
61%
Optica Applicata
EN Optical absorption and luminescence spectra as well as luminescence kinetics of the Nd3+ centres in glasses with Ca3Ga2Ge3O12:Nd composition, containing 0.2 and 1.0 wt% of the Nd2O3 were presented and analysed. The oscillator strengths and phenomenological intensity parameters omega t (omega 2, omeg[...]
13
61%
Archives of Materials Science and Engineering
EN Purpose: The aim of this work was to fabricate the doped with transition or rare earth metals the single crystals such as Bi12GeO20 (BGO) and Bi12SiO20 (BSO), showing the photochromic effect and to study this effect. Findings: To the study results we can count the development of the mentioned singl[...]
14
61%
Optica Applicata
EN The UV and visible optical spectra (absorption, emission and luminescence excitation) of the Ho-doped CaO–Ga2O3–GeO2 glasses at room and liquid nitrogen temperatures have been investigated for the first time. The Ho-doped (CHo = 0.7 wt%) glass samples with garnet Ca3Ga2Ge3O12 (or 3CaO–Ga2O3[...]
15
61%
Nukleonika
EN Two different types of window glasses have been investigated as possible routine dosimeters in the range of 1-50 kGy. Glass samples were irradiated with 3.4 MeV and 8.4 MeV electron beams and the results compared with those obtained by 60Co gamma irradiation. Due to the strong optical absorption at [...]
16
61%
Materials Science Poland
EN We report here for the first time the synthesis of LEEH caped very small size (2 nm) ZnTe quantum dots at low temperature (less than 100 °C) using a simple chemical route. The effects of aging and stirring time on the absorption spectra of the quantum dots were investigated. The synthesized nanocrys[...]
17
51%
Optica Applicata
EN A series of the Tb- and Dy-doped glasses with Li2O-2B2O3 (or Li2B4O7:Tb and Li2B4O7:Dy) composition were synthesised and their spectroscopic properties were investigated. The Li2B4O7:Tb and Li2B4O7:Dy glasses of high chemical purity and optical quality were obtained from corresponding polycrystallin[...]
18
51%
Nukleonika
PL Czteroboran litu (Li2B4O7) używany jest w dozymetrii jako materiał termoluminescencyjny. Praca jest przeglądem badań optycznych domieszkowanego tulem Tm3+ czterobaru litu (Li2B4O7) w stanie szklistym. Wykres poziomów energetycznych Tm3+ w Li2B4O7 określono z widm fluorescencyjnych. Pomiary absorpcj[...]
EN Lithium tetraborate (Li2B4O7) is mainly used in dosimetry as thermoluminescent material. This study is an overview of optical studies made with Tm doped Li2B4O7 in glassy state. An energy level diagram of Tm3+ in Li2B4O7 was obtained from the fluorescent spectra. Optical absorption measurements, bet[...]
19
51%
Elektronika : konstrukcje, technologie, zastosowania
PL W niniejszej pracy przedstawiamy właściwości optyczne otrzymanej poliazometiny 25Th-cardo i jej mieszaniny z estrem [6,6]-fenylo-metylowym-C61 kwasu masłowego (PCBM). Dla polimeru obserwujemy znaczącą absorpcję dla długości fal krótszych niż 480 nm (2,6 eV). Zewnętrzna wydajność kwantowa ogniw słone[...]
EN We report optical properties of a recently synthesized 25Th-cardo polyazomethine (PAZ) and of its mixture with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). The polymer film had significant absorption for wavelengths shorter than 480 nm (2.6 eV). The external quantum efficiency of 25Thcardo: PC[...]
20
51%
Materials Science Poland
2017 Vol. 35, No. 2 390--397
EN During recent decades, magnetic and semiconductor nanoparticles have attracted significant attention of scientists in various fields of engineering, physics, chemistry, biology and medicine. Fe3+ doped PVA capped CdTe nanoparticles were prepared by co-precipitation method and characterize[...]
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