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Questions related from Christoph Wolf
Dear all! I am currently looking for code (preferably Matlab) to solve the time-dependent drift-diffusion equations for a mixed ionic-electronic conductor with a single ionic and single electronic...
05 May 2016 7,693 2 View
Dear Colleagues! This question might be a bit outside of the usual scientific questions here but I found it a rather interesting and often overlooked perspective on this "trend research" topic...
03 March 2016 5,104 1 View
Dear Colleagues! I am currently measuring the absorption of "absorbing thin films on non-absorbing substrate" type samples. The semiconductor material has a gap in the visible region and I am...
03 March 2016 7,208 6 View
Dear All! I recently came across the magneto-absorption technique for estimating of effective carrier mass in semiconductor materials (e.g. Hirashawa et al., Physica B 201 (1994) 427-430 [1]),...
01 January 2016 3,281 2 View
Dear Colleagues! I have a question concerning the band-gap calculated from absorption data by Tauc-plot. I obtain absorption data from photo-thermal deflection spectroscopy (PDS) and uv-visible...
10 October 2015 5,295 4 View
Dear colleagues! I am wondering if there is any method to properly treat the transition from absorption by gap states (Urbach tail) to excitonic or band-to-band. When modelling all contributions...
09 September 2015 8,585 1 View
Dear Colleagues, I am currently trying to validate some CV data. Therefore I would like to model the CV characteristics (capacitance at different bias levels) I am new to COMSOL but it is the only...
05 May 2015 7,976 3 View
I need to prepare a polymer-substrate for Kapton foil by spin-coating. After applying the Kapton I need to spin a layer of PMMA on the Kapton and subsequently release the Kapton from the polymer...
01 January 2014 1,331 3 View