Re: [Meep-discuss] organic material in meep
Hello, You do not need DL model to describe organic materials, they are described using regular dielectric permittivity (complex if you want to account for dielectric losses). You can determine them from the known refractive indices. For ITO it might be different, because it is conductive and in some spectral bands should be considered as metal. However, for your application, depending on the spectral properties of ITO in required spectral band, you might be able to describe it as a dielectric media as well. I think that in visible range it should be possible. With best regards, Shavkat ___ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
Re: [Meep-discuss] organic material in meep
Dear Gholamhosain, the permittivity has to be established from experimental (or quantum-mechanical) sources, see for instance http://xplqa30.ieee.org/ielx5/5503869/6055237/6004802/html/img/6004802-fig-2-large.gif This graph may be easily converted to numerical data using Engauge or similar program. Then I fit the curve manually by one (or few more) Lorentzian oscillators for the spectral region of interest. I put some interesting spectra on the page http://fzu.cz/~dominecf/misc/eps/, where also the data for the materials may be downloaded. But it will be surely easy to build a Lorentzian model for the photovoltaic materials. F. 2013/6/4, Gholamhosain Haidari moh1...@gmail.com: *Hi all* I am interested in meep for organic solar cell. My problem is that I do not know the Drude-Lorentz parameter for regular organic materilas (PEDOT:PSS and PCBM:P3HT, ITO) Is there any program or code for finding Drude-Lorentz parameters from experimental data (for example e1 and e2( e=e1 + ie2)). All the best *Thank you very much in advance* moh ___ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
