Journal
Scientific and Technical Journal of Information Technologies, Mechanics and Optics
UDK539.216.2
Issue:6 (152)
Download PDF0 Kbyte
Investigation of polyvinyl butyral coatings with carbon quantum dots on the characteristics of silicon solar cells
Annotation
Silicon solar cells with functional coatings based on polyvinyl butyral with carbon quantum dots. The change in the parameters of solar cells, when these coatings are used on the front surface of solar cells, is studied. A know-how method has been developed, which consists in the formation of a thin film of polyvinyl butyral with carbon quantum dots on the surface of solar cells. The coating is formed when the solution (isopropyl alcohol with polyvinyl butyral and carbon quantum dots) is pumped out of the cuvette in such a way that the contact boundary of the solution with the surface of the solar cell moves from top to bottom, while the process is carried out without and with ultrasound. Using an SFL MDR-41 monochromator, the luminescence spectra of carbon quantum dots were obtained showing their strong fluorescence in the short-wavelength visible light region (350–450 nm). The coating thickness was measured by ellipsometry on a SE 800 instrument. Also, on the SolarLab 20-UST sunlight simulator, the main parameters of solar cells were measured before and after applying functional coatings. When applying functional coatings, the following pattern is observed: without exposure to ultrasound, an increase in efficiency is observed only at a concentration of carbon quantum dots in a solution equal to 119 ppm, and when exposed to ultrasound, a smooth increase in the efficiency of solar cells up to 2.34 % occurs at a maximum concentration of quantum dots of 463 ppm. In the short-wavelength region of light (365–470 nm), an increase in efficiency is observed for all concentrations of carbon quantum dots, which varies from 4.5 to 38 %. It is shown that functional coatings based on polyvinyl butyral with carbon quantum dots are promising and unparalleled coatings for solar cells, which also perform the additional function of a protective coating against ultraviolet radiation. This coating can also be used for other optoelectronic devices.
Keywords
Постоянный URL
Articles in current issue
- Modeling the illumination of the Earth’s surface to select the operating modes of the radiation source
- Luminescent dynamics of oxygen oxidation of Viburnum opulus L. in chitosan solutions with gold nanoparticles
- Dynamic surface control for omnidirectional mobile robot with full state constrains and input saturation
- Dual-wavelength digital holographic interferometry for technical applications
- Structural analysis of ZrO2 and TiO2 nanoparticles
- Numerical algorithm for finding the optimal composition of the reacting mixture on the basis of the reaction kinetic model
- Raman spectroscopy of nanocomposites ZnO/ZnS and ZnO/ZnSe obtained by solvothermal-microwave synthesis method
- Emotion analysis of social network data using cluster based probabilistic neural network with data parallelism
- Assessing the possibility of using the method of image decomposition based on topological features to reduce entropy during image compression
- Implementation of neural networks in the method of multilevel component circuits
- Fuzzy logic controller algorithm for placing files in a data storage system
- Personalization of convolutional neural networks within the stress detection task using heart rate variability data
- Using topological data analysis for building Bayesan neural networks
- Method of modeling viscoelastic properties of oriented polymer materials using multi-barrier theory
- Design of microstrip patch antenna using Fennec Fox optimization with SSRR metamaterial for terahertz applications
- Algorithm for promptly maintaining the temperature regime of power amplification units of the radar transmitting complex based on a thermal model
- Convective heat transfer and hydrodynamics of flow at the endwall around a turbine blade under the influence of a magnetic field
- Methods of contactless registration of information signals for the audit of information security of power supply systems and networks
- Parameter estimation of permanent magnet synchronous motor
- Internal memory data protecting problems of the Renesas microcontrollers