Vestnik of Ryazan State
Radio Engineering University

UDC 535.215

QUANTUM EFFICIENCY MEASUREMENT IN A HIT SOLAR CELL

A. V. Ermachikhin, Ph.D. (Phys. and Math.), associate professor, senior researcher, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.
Yu. V. Vorobyov, Ph.D. (Phys. and Math.), associate professor, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.
V. O. Sazonov, master student, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.

The description of a technique to measure quantum efficiency is presented. The central formulae describing measurement process are given. The main parts of the measurement facility are shown. Measurement results for a HIT solar cell are presented. The aim of the work is the experimental measurement of quantum efficiency for HIT solar cells and determination of peculiarities of its spectral dispersion. In order to solve this task, the experimental facility was constructed implementing one-channel measurement scheme.

Key words: solar cells, HIT, quantum efficiency, measurement facility

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UDC 621.382.2

INVESTIGATION OF BLUE-LIGHT DIODES EFFICIENCY IN WHITE LIGHT SOURCES CONTAINING PHOTOLUMINOPHOR

A. E. Chizhikov, Dr. Sc. (Tech.), full professor, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.;
M. I. Galitsyn, master student, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it..

The aim of the work is to obtain from the experimental data of blue chip in white light source containing photoluminophor the main parameters of theoretical current-voltage characteristic (CVC) transition and analyze the effect of heating the structure of flowing current on the deviation of experimental CVC from the theoretical one to determine the conditions of the highest relative efficiency of the chip. The results of analytical and experimental studies of chip efficiency – a blue diode on GaN with quantum wells in white light sources TDS-P003L4U10 and BL-L522UWC are given. It is established that the efficiency of the chips depends on transition resistance ratio and structure consecutive resistance, determined by the chip temperature dependent on the current. The effect of chip temperature on the CVC in the range of 20 °С – 180 °С was studied. The most efficient use of supplied current is ensured when the transition resistance in this mode is substantially greater than the consecutive resistance of the structure. It was found that in powerful TDSP003L4U10 the deviation of CVC is caused by the resistance of contact wires connecting the crystal to highcurrent output, and in low-power BL-L522UWC - to the resistance of GaN layers as well as substrate.

Key words: blue led, chip, white led, GaN, relative efficiency, perfect CVC led, heterostructure

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UDC 620.179.1:621.385.64

IONIZATION GAGE FOR ULTRAHIGH VACUUM

V. K. Bazylev, Ph.D. (Tech.), associate professor, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.
A. M. Zhidkov, engineer, department of electronic devices, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.
V. A. Korotchenko, Dr. Sc. (Tech.), full professor, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.
V. E. Skvortsov, CEO, MELP, Zaprudnya, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.

An ionization gage for gas pressure measure for range with moderate to ultrahigh vacuum was developed. The operating principle of the gage is based on the ionization of gas molecules by electrons in a longitudinal magnetic field at the magnetic field above the critical that oscillate between cathode and anode after collision with molecules in the potential well formed by accelerating electrodes. The possibility of removing background current of ions collector conditioned to soft X-rays by significant decrease (to 5 volt) of voltage between cathode and anode was shown. It was experimentally proved that ion current dependence on nitrogen pressure in case on pulsed supply for accelerating electrodes in the range between 0,5 – 100 uTorr is linear in case of high-sensitivity of manometer.

Key words: ultrahigh vacuum, ionization gage, longitudinal magnetic field, potential well for electrons, soft X-rays, sensitivity of manometer.

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 Contents and abstracts

RADIO ENGINEERING, RADAR AND COMMUNICATION SYSTEMS

ESTIMATION IMMUNITY IN COMMUNICATION SYSTEMS USING ORTHOGONAL FREQUENCY HOPPING

Autors: E. L. Kreidik

Key words: orthogonal nets, frequency-hopping spread spectrum, radio communication line noise immunity, repeater jamming, jamming station, noise immunity rating, selection of arrival signal sorting.

DOI: 10.21667/1995-4565-2019-68-2-3-8

DETECTION OF DATA TRANSMITTED VIA UNIVERSAL SERIAL BUS ENSURING ENERGY CONCENTRATION OF RADIATED RADIO BINDING IN NARROW SPECTRUM STRIPS

Autors: A. V. Bukin, D. A. Gulyaikin, V. A. Shalaginov

Key words: USB 2.0 interface, electromagnetic compatibility, classification, radiation, scrambler, distribution function, radio interference, spectrum.

DOI: 10.21667/1995-4565-2019-68-2-9-14

COHERENT MULTI-FRAME ACCUMULATION OF FLUCTUATION BURST PULSES

Autors: V. A. Belokurov.

Key words: likelihood ratio, multi-frame coherent accumulation, Sverling's fluctuation model 1.

DOI: 10.21667/1995-4565-2019-68-2-15-20

MATHEMATICAL SOFTWARE SUPPORT OF COMPUTER SYSTEMS AND NETWORKS

DEVELOPMENT OF SOFTWARE TOOLKIT TO RECONFIGURE PARAMETERS OF DISTRIBUTED DATA CENTERS MULTIPROVIDER NETWORKS

Autors: V. P. Koryachko, D. A. Perepelkin, M. A. Ivanchikova.

Key words: data centers, distributed networks, reconfiguration, software toolkit, software system, service providers.

DOI: 10.21667/1995-4565-2019-68-2-21-27

ARCHITECTURE-INDEPENDENT PROGRAM OF FAST FOURIER TRANSFORM IN SET@L PROGRAMMING LANGUAGE

Autors: I. I. Levin, A. I. Dordopulo, I. V. Pisarenko, A. K. Melnikov.

Key words: architecture-independent programming, Set@l programming language, aspectoriented methodology, fast Fourier transform.

DOI: 10.21667/1995-4565-2019-68-2-37-43

ABOUT THE ALGORITHMS OF TRAVELLING SALESMAN PROBLEM SOLUTION ON THE INTERNET

Autors: V. M. Kureichik, Y. A. Logunova.

Key words: Internet, Traveling Salesman Problem with time Windows, intelligent system, web application, bioinspired algorithms, ant colony algorithm.

DOI: 10.21667/1995-4565-2019-68-2-37-43

INTELLECTUAL INFORMATION SYSTEMS AND TECHNOLOGIES

ON APPLICATION OF DEEP NEURON NETWORKS TO EVALUATE ENTERPRISE CREDIT CAPACITY

Autors:K. G. Shitova, N. I. Tsukanova

Key words: credit capacity evaluation, multilevel neuron network, deep neuron networks, error propagation algorithm, step and batch learning modes, aim function, activation functions, learning error, generalization or testing error.

DOI: 10.21667/1995-4565-2019-68-2-44-54

MANAGEMENT OF EDUCATIONAL ORGANIZATION USING RATING SYSTEM

Autors: S. L. Blyumin, G. S. Borovkova.

Key words: management, planning, rating system, analysis of finite fluctuations, inverse calculation method.

DOI: 10.21667/1995-4565-2019-68-2-55-60

THE CONSTRUCTION OF GLOBAL MATHEMATICAL MODEL ASSESSING STRESS-STRAIN STATE OF THE EARTH'S LITHOSPHERE

Autors: A. O. Faddeev, S. A. Pavlova, T. M. Nevdakh

Key words: mathematical model, geodynamic stability, stress tensor, displacement vector, shear deformations, viscosity, lithosphere.

DOI: 10.21667/1995-4565-2019-68-2-61-67

DETECTOR OF GRADIENT TYPE BORDERS FOR UNDERSTANDING SURFACE IMAGES

Autors: A. I. Novikov, A. V. Pronkin.

Key words:image, partial derivative, gradient, gradient modulus, gradient vector direction, boundary detection, strong lines, weak lines, contour image

DOI: 10.21667/1995-4565-2019-68-2-68-76

SYSTEM ANALYSIS, MANAGEMENT AND INFORMATION PROCESSING

IMPROVING ENERGY EFFICIENCY OF RSREU SPORTS COMPLEX

Autors: A. A. Fefelov, A. I. Ulitenko, D. V. Kuzyanov.

Key words: hot water supply system, optimization, heat pump, low-potential energy, heat recovery.

DOI: 10.21667/1995-4565-2019-68-2-77-82

LQR DESIGN FOR A CMG INVERTED PENDULUM WITH NON-CONSTANT EQUILIBRIUM POSITION

Autors: I. V. Ryadchikov, S. I. Sechenev., N. V. Mikhalkov, A. E. Biryuk, A. A. Svidlov, A. A. Gusev., D. V. Sokolov, E. V. Nikulchev.

Key words: inverted pendulum, CMG, gyroscope, automatic control system, feedback, linear quadratic regulator, error in determining the position of the center of mass, robust control, simulation, MATLAB/Simulink.

DOI: 10.21667/1995-4565-2019-68-2-83-89

SIMULATION OF MUNICIPAL SERVICES COST CALCULATION USING TWO-PART CONSTRUCTION MODES

Autors: M. G. Kostikov.

Key words: municipal services calculation, two-component model of calculation, generalpurpose metering devices, parallelization of computational operations, operations on multidimensional matrices.

DOI: 10.21667/1995-4565-2019-68-2-90-96

PHYSICAL ELECTRONICS AND NANOELECTRONICS

SENSOR STRUCTURE ON THE BASIS OF PHONONIC CRYSTAL PLACED BETWEEN PIEZOELECTRIC TRANSDUСERS

Autors: N. V. Mukhin, М. М. Kutia, E. S. Borodacheva.

Key words: phononic crystal, piezoelectric transducer, sound velocity sensor.

DOI: 10.21667/1995-4565-2019-68-2-97-104

METHOD DEVELOPMENT OF THREE-DIMENSIONAL VISUALIZATION OF SILICON BRICKS MULTICRYSTALLINE STRUCTURE

Autors: S. M. Karabanov, A. E. Serebryakov, O. A. Belyakov, D. V. Suvorov, A. S. Karabanov.

Key words: digital image processing, three-dimensional model, multicrystalline silicon, defects, photoluminescence.

DOI: 10.21667/1995-4565-2019-68-2-105-110

MATHEMATICAL MODELING OF MAGNETIC-HYDRODYNAMIC MIXING SYSTEM FOR SILICON MELT IN THE EXPERIMENTAL SYSTEM OF DIRECTIONAL SOLIDIFICATION

Autors: E. V. Slivkin, S. M. Karabanov, D. V. Suvorov, D. Yu. Tarabrin.

Key words: mathematical modeling, silicon, magnetohydrodynamic mixing, phase shift, current pulse shape.

DOI: 10.21667/1995-4565-2019-68-2-111-119

QUANTUM EFFICIENCY MEASUREMENT IN A HIT SOLAR CELL

Autors: A. V. Ermachikhin, Yu. V. Vorobyov, V. O. Sazonov

Key words: solar cells, HIT, quantum efficiency, measurement facility

DOI: 10.21667/1995-4565-2019-68-2-120-125

IONIZATION GAGE FOR ULTRAHIGH VACUUM

Autors: V. K. Bazylev, A. M. Zhidkov, V. A. Korotchenko, V. E. Skvortsov.

Key words: ultrahigh vacuum, ionization gage, longitudinal magnetic field, potential well for electrons, soft X-rays, sensitivity of manometer

DOI: 10.21667/1995-4565-2019-68-2-126-133

INVESTIGATION OF BLUE-LIGHT DIODES EFFICIENCY IN WHITE LIGHT SOURCES CONTAINING PHOTOLUMINOPHOR

Autors: A. E. Chizhikov, M. I. Galitsyn.

Key words: blue led, chip, white led, GaN, relative efficiency, perfect CVC led, heterostructure.

DOI: 10.21667/1995-4565-2019-68-2-134-141