|
|
Preparation of white-electroluminescent panel
Guricová, Patrícia ; Novák, Vítězslav (referee) ; Vala, Martin (advisor)
The aim of this work is to prepare white emitting electroluminescent device using printing techniques. Preparation options are discussed in order to minimise reabsorption in the phosphor layer and thus increase the overall radiation intensity. Model devices were prepared, the active layer of phosphor printed in a pattern of stripes and circles. The impact of the applied voltage and frequency was studied on these devices. It has been shown that, in terms of white emission, it is better to use the patterns compared to the phosphor mixture. The ratios of emission intensities of both phosphors are more even, therefor closer to the white light. The output of this work is model designed to determine the necessary frequency area for obtaining the white emission of ACEL device.
|
|
|
Material prinitng of electroluminiscent panel
Guricová, Patrícia ; Dzik, Petr (referee) ; Vala, Martin (advisor)
This works deals with the preparation of luminescent lamp using screen printing method, characterization of individual layers and the study of spectral properties, influenced by changing printing parameters. In theoretical part are described the principles of electroluminescence as well as the method of preparation of the luminiscent lamp. Experimental part involves optimazing of printing parametres, so the homogenneous light emission is achieved. Furthermore, the influence of the change in the number of layers of active material and dielectric on the light output of the panel at the lowest working voltage is studied. The result of this work is a funcional electroluminescence lamp and an optimazed process for its preparation.
|
|
|
Recovery Of Cathode Material From Li-Ion Batteries
Guricová, Patrícia
This article focuses on the possibilities of recycling materials from spent Li-ion batteries,especially on direct recycling. Lithium-ion batteries (LIBs) are gradually replacing other types ofaccumulators from practical applications and further increase in their production is expected in thefuture. With high production, bigger amount of waste will have to be deal with. Recycling processescurrently in use are not efficient enough and they have been developed mainly for one type ofcathode material. Direct recycling is very promising in terms of efficiency, but it needs to be furtherenhanced. Direct recycling technology is discussed in the text as well as the recovery processfor commercial Samsung 18650B-20R aged cell using different kinds of solvents.
|
|
|
Preparation of white-electroluminescent panel
Guricová, Patrícia ; Novák, Vítězslav (referee) ; Vala, Martin (advisor)
The aim of this work is to prepare white emitting electroluminescent device using printing techniques. Preparation options are discussed in order to minimise reabsorption in the phosphor layer and thus increase the overall radiation intensity. Model devices were prepared, the active layer of phosphor printed in a pattern of stripes and circles. The impact of the applied voltage and frequency was studied on these devices. It has been shown that, in terms of white emission, it is better to use the patterns compared to the phosphor mixture. The ratios of emission intensities of both phosphors are more even, therefor closer to the white light. The output of this work is model designed to determine the necessary frequency area for obtaining the white emission of ACEL device.
|
|
|
Material prinitng of electroluminiscent panel
Guricová, Patrícia ; Dzik, Petr (referee) ; Vala, Martin (advisor)
This works deals with the preparation of luminescent lamp using screen printing method, characterization of individual layers and the study of spectral properties, influenced by changing printing parameters. In theoretical part are described the principles of electroluminescence as well as the method of preparation of the luminiscent lamp. Experimental part involves optimazing of printing parametres, so the homogenneous light emission is achieved. Furthermore, the influence of the change in the number of layers of active material and dielectric on the light output of the panel at the lowest working voltage is studied. The result of this work is a funcional electroluminescence lamp and an optimazed process for its preparation.
|
guest ::
