NON-CONTACT OPTICAL THERMAL SENSORS BASED ON (GA54.59IN44.66ER0.75)2S300 SINGLE CRYSTALS
Journal Title: Сенсорна електроніка і мікросистемні технології - Year 2018, Vol 15, Issue 1
Abstract
The (Ga54.59In44.66Er0.75)2S300. single crystal was grown in a vertical two-zone furnace by a solution-melt method. In the optical absorption spectrum of the obtained single crystal (Ga54.59In44.66Er0.75)2S300. the maxima corresponding to transitions in the 4f shell of Erbium ions were identified. The spectra of photoluminescence were investigated at temperatures of 150, 200, 250, 300 K and at laser excitation with a wavelength of 980 nm. The radiation maxima (805, 1540 nm) do not change their position and form when temperature changes. On the basis of the diagram of energy levels of the Er3+ ions, the mechanism of radiation is established, and the growth of the integral intensity of the photoluminescence according to increasing temperature is explained. The sensitivity of the radiation maxima of the (Ga54.59In44.66Er0.75)2S300. single crystal from temperature is calculated.
Authors and Affiliations
V. V. Halyan, I. A. Ivashchenko, A. H. Kevshyn, I. D. Olekseyuk, A. P. Tretyak, P. V. Tishchenko
Keywords
Related Articles
- EP ID EP399907
- DOI 10.18524/1815-7459.2018.1.126352
- Views 36
- Downloads 0
DIRECTMEASURING PHASE METHOD OF SMALL DISTANCES MEASUREMENT BY THE OPTOELECTRONIC SENSOR IN DYNAMIC CONDITIONS
Statement of a task The work is devoted to development and researches of a method the small distances precision contactless measurement for creation of the optoelectronic sensor working in dynamic conditions. Technique...
HUMIDITY SENSORS BASED ON SNO2 -CO3 O4 -NB2 O5 -CR2 O3 SEMICONDUCTOR VARISTOR CERAMICS
The varistor effect in SnO2 -Co3 O4 -Nb2 O5 -Cr2 O3 ceramics with different additions is accompanied by a strong humidity-sensitivity effect in the low-field electrical conductivity. The low-field electrical conductivity...
COMPUTER SYNTHESIS AND ANALYSIS OF WIDE-WIDE OPTICAL LOCAL RECEIVER
The analysis of problems in the specific area of optoelectronic instrumentation is conducted. Describes the developed optical device, which provides the radiation pattern of the optical locator (OL), using it, three time...
MODULATION LASER SPECTROSCOPY METHOD FOR IR-RADIATION LOSES MEASUREMENTS IN GASES
This paper provides analysis related to modulation laser spectroscopy method (MLS) with utilization of direct Fourier transform for determination of either loss coefficient or gas concentration in the mixture. Applicabil...
PIEZOPHOTOCONDUCTIVITY SPECTRA OF SEMICONDUCTOR LAYERED CRYSTAL
The results of investigations of piezophotoconductivity of layered crystals In4Se3, conductivity component which is proportional to the product of the intensity of light and the mechanical stress, are presented. We analy...