How to calculate the absorption coefficient of a semiconductor numerically?

If I know the band gap if a certain semiconductor, and I would like to calculate the value of the absorption coefficient numerically using the following equation: how to determine the values of...

01 February 2017 3,297 1 View

Can anyone suggest a solar cell Modeling software for beginners?

10 November 2016 2,278 43 View

What is the best method to fabricate Gold counter electrode for QDSSCs?

02 March 2016 2,724 2 View

How to prevent the re-stacking of Graphene Oxide after reduction?

02 March 2016 5,973 5 View

How to differentiate between allowed and forbidden transitions in direct band gap semiconductors?

01 February 2016 356 7 View

How do I solve the problem of continuous corrosion of metal sulfides counter electrode in the presence of polysulfide electrolyte?

09 October 2015 340 3 View

Did any one know the full spectrum of Ultra-high-performance lamp?

04 May 2015 8,451 5 View

How to measure Solar cell J-V curve by Potentiostat?

I need to measure the J-V curve for solar cell using Princeton Versastat 4 potentiostat. How can I connect the terminals of the potentiostat?

03 April 2015 5,591 11 View

Why is in Raman is laser of wavelength 785 nm not compatible with graphene?

the most Raman spectrometers use LASER wavelengths of 533 and 633 during characterizing Graphene. When a LASER of wavelength 785 nm is used the D & G peaks in the spectrum are greatly shifted...

03 April 2015 2,470 9 View

What is the most appropriate lamp type for handmade solar simulator?

03 April 2015 3,153 14 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

Why does blocking with my immunogenic peptide cause nuclear fluorescence in ICC?

Hi all, I am validating a polyclonal antibody raised against human ANT4, through WB and ICC. In most of my controls, the antibody shows very little off-target binding, but when I pre-incubate the...

03 March 2021 5,999 3 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 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

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 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