KJ
K. Jarolímek
14 records found
1
Authored
The optical and electrical properties of Si rich SiC (SRSC) solar cell absorber layers will strongly depend on interfacial layers between the Si and the SiC matrix and in this work, we analyze hitherto undiscovered interfacial layers. The SRSC thin films were deposited using a pl
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We propose a method, with minimal bias caused by user input, to quickly detect and measure the nanocrystal size distribution from transmission electron microscopy (TEM) images using a combination of Laplacian of Gaussian filters and non-maximum suppression. We demonstrate the pro
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We present a theoretical study of hydrogenated amorphous silicon (a-Si:H) with a device quality hydrogen concentration of 11 at%. We used a first principle, parameters-free method. The interaction between the atoms was treated quantum mechanically within the density functional th
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We present a theoretical study of hydrogenated amorphous silicon (a-Si:H) with a device quality hydrogen concentration of 11 at%. We used a first principle, parameters-free method. The interaction between the atoms was treated quantum mechanically within the density functional th
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We present a theoretical study of hydrogenated amorphous silicon nitride (a-SiNx:H), with equal concentrations of Si and N atoms (x=1), for two considerably different densities (2.0 and 3.0¿g/cm3). Densities and hydrogen concentration were chosen according to experimental data. U
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Abstract: We use a molecular-dynamics simulation within density-functional theory to prepare realistic structures of hydrogenated amorphous silicon. The procedure consists of heating a crystalline structure of Si64H8 to 2370 K, creating a liquid and subsequently cooling it down t
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Atomistic models of amorphous solids enable us to study properties that are difficult to address with experimental methods. We present a study of two amorphous semiconductors with a great technological importance, namely a- Si:H and a-SiN:H. We use first-principles density functi
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