18 Questions 40 Answers 0 Followers
Questions related from Waranatha L Abeygunasekara
I need to find a company/research lab that will fabricate and ship organic solar cells to a given set of specifications, (the size, active layer blend, thickness of the layers, the end contacts...
23 April 2019 5,265 2 View
I'm looking at characterizing the light intensity dependent performance of the solar cells. As a part of this work need to know if the effect of intensity dependent refractive index/ dielectric...
21 September 2017 8,035 4 View
In the single diode model of solar cell described by I = I0( exp(q(V-I*Rs)/n*KB*T)-1) +(V-IRs)/Rsh - Iph n is described as the diode ideality factor. For Si solar cells n is a number between 1...
15 July 2015 2,790 14 View
How do you identify if a device is in the 'space charge limited current' region or not? It is said that for organic semiconductors SCLC technique is very good for determining the carrier...
01 June 2015 1,692 41 View
Is it only the work function and relevant HOMO LUMO energy level alignment that makes a pedot:pss layer act as a hole extracting layer? In that case, with different energy level alignment can it...
29 April 2015 1,559 9 View
I have J-V characteristics (both dark and light) for some solar cells. These devices are fabricated under different conditions and I would like to compare the mobility at each instance. Is it...
22 April 2015 423 3 View
.This is regarding the numerical solving of the drift diffusion equations. In an online lecture (Dragica Vasileska (2006), "Drift-Diffusion Model, Part A: Introduction,"...
09 April 2015 4,414 2 View
this is regarding simulating solar cells using comsol semiconducting module. I have a slab of semiconductor sandwiched between two schotkky contacts. I define the generation profile as an...
04 April 2015 5,174 7 View
This is regarding P3HT:PCBM bulk heterojunction organic solar cells. I have noticed that open circuit voltage is a little less for the annealed devices when compared to un-annealed devices. (of...
26 March 2015 3,604 7 View
When using drift diffusion model to investigate the charge extraction from a slab of semiconductor, if you do not include a recombination term into your calculations, does this set the charge...
13 February 2015 6,174 5 View
For a given semiconductor material, can we consider charge carrier lifetime as a material property? Or does it vary much with processing conditions, doping etc?
10 February 2015 8,957 6 View
I have noticed that my model converge to different solutions when I'm running it directly in comsol and saving it as .m file and running it through matlab. Have anybody else had this problem? Any...
29 January 2015 2,428 8 View
What is the typical charge carrier lifetime(s) in organic semiconductors? I'm interested in material used in organic solar cells. How do these values compare with the values for inorganic...
13 January 2015 5,452 7 View
What is the most significant recombination happening in organic solar cells. In bulk heterojunction configuration, how about the recombinations taking place at the donor-acceptor interface Vs the...
09 January 2015 6,864 4 View
I'm using a comsol model with two studies. In the first, I'm doing a parametric sweep and the input to the second study depend on the parametric sweep of the first study. I need to basically sum...
19 December 2014 9,361 4 View
When running comsol on a workstation (64GB ram) are there any settings that need to be configured manually? I have installed the comsol going through installation setup as you would install any...
26 November 2014 10,163 7 View
Is there a better method specific for implicit equations? I'm working on extracting lumped parameter equivalent values of a solar cell for single diode model, using experimental JV data. The...
14 November 2014 6,152 7 View
I'm working on modelling organic solar cells and need to find the complex refractive index data of common active layer polymers and charge extraction layer material.
24 October 2014 6,729 17 View
