The only drawback to the Sopra data is that, for most of the materials, there is no indication of the origin of the sample which was measured.
Sopra refractive index database software#
All the data files, except Sopras special alloy format, were converted to the TFCalc format by Software Spectra. The phase velocity is the speed at which the crests or the phase of the wave moves, which may be different from the group velocity, the speed at which the pulse of light or the envelope of the wave moves. company in France made its optical database available. While typical multijunction photovoltaic devices have a very complicated optical structure, it is benecial to compare the designs using a simpler. The refractive index n of an optical medium is defined as the ratio of the speed of light in vacuum, c 299 792 458 m/s, and the phase velocity v of light in the medium. loadk (Lambda Lambda) return (Wav, ((4 np. Returns: Tuple of (Wavelength, alpha) ''' Wav, k self. Tandem colloidal quantum dot solar cells employing a graded recombination layer. data will be interpolated into this range before output. Available online: (accessed on 15 February 2016). Optional argument Lambda allows user to specify a custom wavelength range. All of the optical constants used for these models were obtained from the Sopra optical database 4, 5, 17, 18. Load refractive index (n) data of the requested material. Using the transfer matrix method and a finite element method implementation to rigorously solve Maxwell’s equations, we discuss anti-reflection and scattering properties of the different front interface designs in view of the angular distribution of incident light. it has a high refractive index that is representative of many IIIV materials used in 3-J and 4-J architectures. The compared geometries comprise multilayer coatings, gratings with step and continuous profiles as well as combinations thereof. In this contribution we present a comparative simulation study of several 1D, 2D and 3D nano-optical designs for the substrate / illumination side interface to the several micrometer thick back contacted LPC silicon absorber material. The lateral grain size of these polycrystalline cells is in the millimeter range at an absorber thickness of up to 10 m. The structure is located on a half innite glass substrate with a constant refractive index n 1.51. Rech, B.Ī new generation of polycrystalline silicon thin film solar cells is currently being developed in laboratories, employing a combination of novel laser or electron beam based liquid phase crystallization (LPC) techniques and single side contacting systems. A comparison of scattering and non-scattering anti-reflection designs for back contacted polycrystalline thin film silicon solar cells in superstrate configuration A comparison of scattering and non-scattering anti-reflection designs for back contacted.