The proposed research topic:
Automated complex certification solar cells based on LED simulator with improved spectral characteristics and functionalities.
Scientists who are going to participate in the project:
Khrypunov Gennady S., Professor, Doctor of Technical Sciences, Head of the Materials for electronics and solar cells department (MESC), National Technical University «Kharkiv Polytechnic Institute» (NTU «KhPI»);
Meriuts Andrey V., Ph.D, Associate Professor of the Materials for electronics and solar cells department (MESC), National Technical University «Kharkiv Polytechnic Institute» (NTU «KhPI»);
Zaitsev Roman V., Ph.D., Associate Professor of the Materials for electronics and solar cells department (MESC), National Technical University «Kharkiv Polytechnic Institute» (NTU «KhPI»);
Kirichenko Mikhail V., Ph.D., Researcher of the Materials for electronics and solar cells department (MESC), National Technical University «Kharkiv Polytechnic Institute» (NTU «KhPI»);
Kudiy Dmitriy A., Ph.D., Senior Lecturer of the Materials for electronics and solar cells department (MESC), National Technical University «Kharkiv Polytechnic Institute» (NTU «KhPI»).
Keywords:
Simulator, light emitting diode, microcontroller, algorithm, complex.
Abstract:
Relevance of the project due to the fact that the presented at the moment in the open market samples solar simulators and measurement systems based on them is very expensive and difficult in use. Scientific novelty of the project is to develop cost-effective automated measuring complex, consisting of solar simulators with the modular concept of the radiating element at which the high-brightness LEDs are included in the light-emitting cells symmetrically placed on the surface of the radiating element, which allows easy addition of additional cells to increase as the radiation power and area which implements the standard irradiation modes AM1,5G and AM0, microcontroller control system and software for an express certification of solar cells in their current-voltage characteristics. The project will use methods of mathematical modeling of light and dark current-voltage characteristics of solar cells, in particular, based on the use of the Nildera — Mead algorithm and the least squares method, calculation methods of management systems and the creation of algorithms for their work. These theoretical methods will be adapted for the evaluation of solar cells by measuring methods of the light and dark current-voltage characteristics and for the open-circuit voltage decrease after the cutoff of luminous flux. According to the results of the Project an automated complex experimental sample of certification of solar cells based on LED simulator with improved spectral characteristics, and functionality and software will be created. Will be made outline project documentation set, including drawings of solar radiation simulator frame structures, electrical schemes of simulator power supply and control, the electrical schemes of the device for the automated measurement of current-voltage characteristics of solar cells, block — diagrams of software algorithms which control the automated complex and carries out current-voltage characteristics automated processing, the code listings. Target consumers of the results — Kazakhstan’s research institutes leading SC development and manufacturing enterprises engaged in the assembly of solar modules prefabricated elements.
Project Idea
The development of cost-effective automated measuring complex, consisting of solar simulator based on light-emitting diodes, microcontroller control system, associated software, which allows certification of solar cells express on their current-voltage characteristics — is relevant. The Project will use modular design of the radiating element simulator whereby powerful super bright LEDs are included in the light-emitting cells, which are symmetrically arranged on the surface of the radiating element, which allows easy addition of additional cells to increase as the radiation power and the area in which implements the required irradiation modes. The device is supposed to perform as a prefix to the personal computer (PC). The device will provide conversion coming from the computer control of a digital signal to analog form and its subsequent submission to the actuators to create the desired physical measurement conditions. Device will be implemented at the hardware level optimal principles for physical parameters measuring of the test sample — current and voltage, and their subsequent conversion into digital form for transmission to a PC. Exchange of digital information with installed on your computer program control and data management, is expected to produce a standard interface for USB. The project is assumed to develop a computer program to determine the parameters of the equivalent circuit of diode structures, as well as the output characteristics of solar cells The basic idea, which is supposed to lay in the program, based on the approximation of the experimental light and dark current-voltage characteristics of solar cells using a known theoretical expressions for these current-voltage characteristics (CVC). As an optimization function is used functional obtained for the least squares method on the basis of the theoretical expressions for the CVC and the experimental data on the measurement of current-voltage characteristic.
A list of organizations that are ready to join the project (if any)
N. Zhukovsky National Aerospace University «Kharkiv Aviation Institute»; Ukraine and National Taras Shevchenko University, Kyiv, Ukraine are already involved.
Scientific novelty:
The principal difference of the project ideas from the analogues is the use of previously proven authors modularity radiating element simulation, according to which the powerful (not less than 15 W power consumption) over bright LEDs included in the light-emitting cells, which are symmetrically arranged on the surface of the radiating element allowing easy addition of additional cells to increase as the radiation power and the area on which implement the required irradiation regimes. Each cell contains a light emitting from 4 to 6 LEDs with wide 450 ≤ λ ≤ 1000 nm emission spectrum and is equipped with active cooling of the LED. To control the operation of the simulator and implementation of the automated measurement of current-voltage characteristics of solar cells will be used microcontrollers with ARM architecture. This will allow, using the programming language C+, implement an automatic power control and the LEDs mode in the composition of the simulator (from permanent to pulse). Program will also be implemented at the hardware level current and voltage measurements on the investigated SC. Combined with innovative software for treatment of the solar cells current-voltage characteristics based on the application of the Nildera – Mead algorithm and the method of least squares this complex will automatically determine the output parameters, efficiency, light diode characteristics of solar cells, as well as the minority carrier lifetime charge in their base crystals.
Use in the complex a relatively small number of powerful super-bright LEDs (200 pieces), microcontrollers with ARM architecture, as well as other standard parts and components in combination with energy-saving over bright LEDs allow several times to reduce the cost of automated complex and the cost of its operation. Impact of the received results on the development of science and technology will be expressed in circuit solutions receiving of the automated complex and work algorithms of control software and also work program algorithms for analytical processing of light-current-voltage characteristics of solar cells that can be used in the development of design and technological solutions to contemporary optoelectronics devices.
List of the most significant publications in the international journals included in the Scopus database (if any):
1. Klochko, N.P., Khrypunov, G.S., Kopach, V.R., Tyukhov, I.I., Klepikova, K.S., Kirichenko, M.V., Lyubov, V.M. Ultrasound assisted nickel plating and silicide contact formation for vertical multi-junction solar cells (2013) Solar Energy 98 (PC) PP. 384 – 391.
- Gurevich Yu.G., Meriuts A.V. Dember effect: Problems and solutions (2013) Physics Letters A 377 PP. 2673–2675 (included in the database SCOPUS.).
- Zaitsev, R.V., Kopach, V.R., Kirichenko, M.V., Doroshenko, A.N., Khrypunov, G.S. Dependence of minority charge carriers lifetime on point defects type and their concentration in single-crystal silicon (2011) Functional Materials 18 (4) PP. 497 – 503 (included in the database SCOPUS).
- Khrypunov, G.S., Kopach, V.R., Meriuts, A.V., Zaitsev, R.V., Kirichenko, M.V., Deyneko, N.V. The influence of prolonged storage and forward-polarity voltage on the efficiency of CdS/CdTe-based film solar cells (2011) Semiconductors 45 (11) PP. 1505 – 1511 (included in the database SCOPUS).
- Hajimammadov, R., Fathi, N., Bayramov, A., Khrypunov, G., Klochko, N., Li, T. Effect of «CdCl2 treatment» on properties of CdTe-based solar cells prepared by physical vapor deposition and close-spaced sublimation methods (2011) Japanese Journal of Applied Physics 50 (5 PART 3) (included in the database SCOPUS).
- Kirichenko M.V., Zaitsev R.V., Kopach V.R. Advanced methods of increasing and monitoring the lifetime of nonequilibrium minority charge carriers in master dies for high-performance silicon solar cells (2010) Telecommunications and radio engineering 69(5) PP. 441 – 450 (included in the database SCOPUS).
- Meriuts A.V., Khrypunov G. S., Shelest T. N., and Deyneko N. V. Features of the Light Current–Voltage Characteristics of Bifacial Solar Cells Based on Thin CdTe Layers (2010) Semiconductors 44(6) PP. 801–804 (included in the database SCOPUS).
Expected results:
An automated complex experimental sample of certification of solar cells based on LED simulator with improved spectral characteristics, and functionality and software will be created. Will be made outline project documentation set, including drawings of solar radiation simulator frame structures, electrical schemes of simulator power supply and control, the electrical schemes of the device for the automated measurement of current-voltage characteristics of solar cells, block — diagrams of software algorithms which control the automated complex and carries out current-voltage characteristics automated processing, the code listings.
Contacts:
Kudiy Dmitriy, Senior Lecturer, Ph.D., Materials for electronics and solar cells department (MESC), National Technical University «Kharkiv Polytechnic Institute» (NTU «KhPI»), 21, Frunze str., 61002 Kharkiv, Ukraine.
Correspondent Address: 61098, Cherednichenkovsky lane, 7, Apt. 453, Kharkiv, Ukraine.
Email: kudiy@ukr.net.
Phone: +380955809561.