The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We investigate the influence of surface texture on the effectiveness of reflectance by intermediate reflectors in thin-film tandem solar cells. Two distinct angular reflection regimes are identified. For large-angle textures, frustrated total internal reflection or photon tunneling is the dominating mechanism. We show that the parasitic reflection losses of commonly used randomly textured surfaces...
We summarize on two examples of simulation-based analyses of light trapping in prototype thin-film silicon solar cells with plasmonic back contacts. First, based on optical simulations, the plasmon-induced light scattering at Ag back contact with non-ordered nanostructures is explained. Second, optical simulations of solar cells with plasmonic reflection-grating back contacts are presented. The simulated...
We analyze the absorption enhancement in single and tandem solar-cells comprising nanostructures that increase the path of the photons inside the solar cell. For this purpose we exploit different physical phenomena in different material systems.
We analyze experimentally and theoretically light localization at randomly textured ZnO surfaces and light absorption in thin-film amorphous Si deposited conformal on it. Guidance is provided to tailor such surfaces for optimizing the absorption.
This work describes properties of films and solar cells prepared under deposition conditions close to the transition from amorphous silicon (a-Si:H) to microcrystalline silicon (/spl mu/c-Si:H) growth and vice versa. The transition from a-Si:H to /spl mu/c-Si:H shifts to a lower silane concentration when using a-SiC:H p-layers compared to films deposited directly on the glass or on /spl mu/c-Si:H...
In this work we present a detailed study of the electroluminescence properties of Si1-xGex/Si double heterostructure diodes. The diodes were grown selectively by low pressure chemical vapor deposition which enables to grow dislocation-free and fully strained Si1-xGex layers much above the critical thickness. The electroluminescence is shown to be due to the recombination of free excitons at lower...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.