Any company that will fabricate Organic solar cells to ones own specifications?

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...

03 April 2019 4,652 3 View

How to model intensity dependent complex refractive index of optical absorbers? Any literature related to solar cells?

08 September 2017 9,973 5 View

Anybody working with comsol semiconductor module?

I have noticed that solution to my comsol model can depend on, mesh, initial guess and also on which solver is being used. I don't know if this can be generalized, but I have noticed this in...

07 August 2015 2,878 3 View

What is the reason for a solar cell's short circuit current not tallying up with generation term when recombination is set to zero?

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...

03 April 2015 5,296 8 View

Is it possible to extract mobility related information from dark J-V characteristics of a solar cell?

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...

03 April 2015 3,277 4 View

How can I set up memory allocation for COMSOL in your computer?

I'm running COMSOL simulations in a 64GB RAM workstation. So far I have been using the default settings. However recently I have noticed that when I have a much finer mesh, computation time is...

03 April 2015 7,248 10 View

What is the significance of Debye length in drift diffusion modelling?

.This is regarding the numerical solving of the drift diffusion equations. In an online lecture (Dragica Vasileska (2006), "Drift-Diffusion Model, Part A: Introduction,"...

03 April 2015 177 3 View

Why do I observe reduction in open circuit voltage of organic solar cells with annealing?

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...

02 March 2015 4,151 8 View

What parameters I should change if the solution to a COMSOL model depends on the initial conditions?

I'm using comsol semiconductor module to model the charge transport in a chunk of semiconductor I vary the thickness of the semiconductor and solve the model as a parametric sweep. When I solve...

02 March 2015 511 5 View

What is the minority carrier lifetime when recombination is zero?

01 February 2015 3,885 6 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Does any one know how i can prepare liver tissue with transmission electron microscope with good fixation?

i have problem in preparation of liver tissue with bad cell organelles and how i can adjust osmolarity

03 March 2021 8,890 1 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

SEM or Multiple Regression for an analysis without Latent Variables?

Hello, I have three hypothesis to test, all with the same IV. I am testing if the effect of the IV on the first DV is mediated by awe. I am then measuring whether the effect of the IV on a...

26 February 2021 8,399 5 View