National Repository of Grey Literature 14 records found  1 - 10next  jump to record: Search took 0.00 seconds. 
Silicon solar cells: methods for experimental study and evaluation of material parameters in advanced structures
Holovský, Jakub ; Vaněček, Milan (advisor) ; Sládek, Petr (referee) ; Hlídek, Pavel (referee)
This work concerns with today's challenges of photoelectrical characterization methods in the research and development of thin film silicon solar cells. Relevant results are obtained only when photocurrent spectroscopy and measurement of current-voltage characteristics, are applied on the real structures that can however be multi-layered, multi-junction devices with nanostructured interfaces. Analytical and numerical optical models comprising light scattering are used for analysis of light absorption and for evaluation of optical absorption coefficient of silicon layers in sub-gap region. The slope of absorption edge and residual absorption in mid-gap indicate material disorder and defect density. Based on the investigation of electrical interaction between sub-cells in the dual-junction solar cell we developed new methods of evaluation of photocurrent spectra and current-voltage characteristics individually for each sub-cell with no need to contact them directly. Usability of Fourier Transform Photocurrent Spectroscopy as a robust method for photocurrent spectroscopy of amorphous silicon is thoroughly analyzed here. The issues of frequency dependence are addressed in detail and comparison with photothermal deflection spectroscopy is made.
Entrepreneurial Intention of Business development
Vaněček, Milan ; Vévoda, Zdeněk (referee) ; Solař, Jan (advisor)
This Master’s thesis deals with the analysis of the existing, general and departmental environment and internal status of the company STROJÍRNA OSLAVANY, spol. s r. o. On the basis of the finding informations the work includes the processed suggestion of the corporate strategy, which should be helpful to establish the company position on the market and assure her additional development.
Silicon solar cells: methods for experimental study and evaluation of material parameters in advanced structures
Holovský, Jakub ; Vaněček, Milan (advisor) ; Sládek, Petr (referee) ; Hlídek, Pavel (referee)
This work concerns with today's challenges of photoelectrical characterization methods in the research and development of thin film silicon solar cells. Relevant results are obtained only when photocurrent spectroscopy and measurement of current-voltage characteristics, are applied on the real structures that can however be multi-layered, multi-junction devices with nanostructured interfaces. Analytical and numerical optical models comprising light scattering are used for analysis of light absorption and for evaluation of optical absorption coefficient of silicon layers in sub-gap region. The slope of absorption edge and residual absorption in mid-gap indicate material disorder and defect density. Based on the investigation of electrical interaction between sub-cells in the dual-junction solar cell we developed new methods of evaluation of photocurrent spectra and current-voltage characteristics individually for each sub-cell with no need to contact them directly. Usability of Fourier Transform Photocurrent Spectroscopy as a robust method for photocurrent spectroscopy of amorphous silicon is thoroughly analyzed here. The issues of frequency dependence are addressed in detail and comparison with photothermal deflection spectroscopy is made.
Proposal of the Improvement of the Motivation System in the Company
Horáková, Pavla ; Vaněček, Milan (referee) ; Novák, Petr (advisor)
This bachelor´s thesis deals with the motivation of the chosen company STROJÍRNA OSLAVANY, spol. s r.o. It focus on rewards of employees and on employees' benefits. By using of questionnaire of research were found out problems and shortages in motivation of employees. Then you can find out suggestions of sollutions, which should encourage to improving of informations and of productivity in the company.
The steel structure of a sports hall
Vaněček, Milan ; Pilgr,, Milan (referee) ; Štrba, Michal (advisor)
Master thesis is focused on design of steel roofing structure of sports hall. Construction is located in town of Jihlava. Proportions and disposition are in accordance of assignment of master thesis. The proportions are 40m x 60m, the height of structure is approximately 15m. Two versions of roof structure were designed – truss beam with shape of lentil and double reverse truss girders (girland truss). These versions were tentatively analyzed and designed for the main bearing members. Afterwards both of the versions were appraised and one of the versions was chosen for detailed treatment. It means there was attention focused on design of important details, creating of drawing documentation and technical report, all in the range of thesis supervisor. The valid Eurocodes were used.
Company Performance Measurement
Holý, Radek ; Vaněček, Milan (referee) ; Bartoš, Vojtěch (advisor)
This master´s thesis deals his issue of company performance measurement. In the first part there is given theoretical framework of this topic. The practical part contains analysis of the current situation of the company with two competitors. Based on the analysis there are proposing measures, which will contribute to improving business performance.
Characterization of amorphous and microcrystalline Si layers and ZnO layers on glass
Vaněček, Milan ; Holovský, Jakub ; Poruba, Aleš ; Remeš, Zdeněk ; Purkrt, Adam
Optical and photoelectrical properties of materials from TEL Solar were characterized in the Institute of Physics, AS CR in a broad spectral region and a high dynamic range. Conclusions on material properties with respect to thin film silicon solar cells were drawn.
Potential for nanotechnology approaches in the production of crystalline and thin film silicon solar cells
Poruba, Aleš ; Vaněček, Milan ; Bařinka, R. ; Čech, P. ; Wostrý, P.
Increasing the solar cell conversion efficiency together with reducing their production cost are the trends of the last years which are necessary for the near future grid parity of "the energy from the sun". This paper deals mainly with the first part of trends, i.e., with enhanced cell efficiency while keeping the production cost nearly the same or even lower taking into account the potential for the implementation of nanotechnologies in both monocrystalline and thin film silicon devices.
Výzkum a pilotní projekt využití fotovoltaických modulů pro přímou integraci do budov
Fyzikální ústav Akademie věd České republiky, Praha ; SOLARTEC s.r.o., Rožnov pod Radhoštěm ; Vaněček, Milan ; Bařinka, Radim
Cílem projektu je nabídnout architektům, stavebním inženýrům a investorům atraktivní možnost jak zvýšit užitnou hodnotu realizovaných, případně renovovaných budov. Výsledkem výzkumu a vývoje solárních modulů pro přímou integraci do budov budou zcela funkční fasádní fotovoltaické prvky pro různé účely použití. V rámci řešení projektu se podařilo zahájit první experimentální práce na funkčních vzorcích laminovaných skel, která mají velký aplikační potenciál, pokračovaly testy zalévacích hmot a byly konzultovány problémy integrace fotovoltaiky do budov.
Výzkum a pilotní projekt využití fotovoltaických modulů pro přímou integraci do budov
Fyzikální ústav Akademie věd České republiky, Praha ; SOLARTEC s.r.o., Rožnov pod Radhoštěm ; Vaněček, Milan ; Bařinka, Radim
Cílem projektu je nabídnout architektům, stavebním inženýrům a investorům atraktivní možnost jak zvýšit užitnou hodnotu realizovaných, případně renovovaných budov. Výsledkem výzkumu a vývoje solárních modulů pro přímou integraci do budov budou zcela funkční fasádní fotovoltaické prvky pro různé účely použití. V rámci první fáze projektu probíhalo mapování a popis aplikačních možností integrace fotovoltaicky do budov.

National Repository of Grey Literature : 14 records found   1 - 10next  jump to record:
See also: similar author names
3 VANĚČEK, Marcel
9 VANĚČEK, Michal
2 VANĚČEK, Miloslav
1 VANĚČEK, Miloš
2 Vaněček, Martin
4 Vaněček, Matěj
9 Vaněček, Michal
Interested in being notified about new results for this query?
Subscribe to the RSS feed.