Tin rich SnS nanoparticles shows higher band gap compare to Stochiometric SnS (Sn:S, 1:1)why?

Tin rich SnS nanoparticles shows higher optical band gap compare to Stochiometric SnS (Sn:S, 1:1) why?

08 September 2016 4,175 1 View

What would be the effect of initial precursor concentration on morphology of nanoparticles?

09 October 2014 2,209 3 View

How do you interpret scanning tunneling spectroscopy of ZnO thin film?

I want to interpret STS graph of ZnO thin film in the image below.

08 September 2014 5,133 1 View

Can we compare band gap obtained from optical spectra and scanning tunneling spectroscopy?

I want to compare band gap values obtained from tauc plot and scanning tunneling spectra.

08 September 2014 5,711 0 View

What is difference between Conductive atomic force microscopy and Scanning tunneling spectroscopy

IN Both Conductive atomic force microscopy and Scanning tunneling spectroscopy technique I-V curve are detected. I want to know what is difference between them?

07 August 2014 9,928 2 View

How do you calculate the surface potential values of thin films from SKPFM (Surface kelvin probe force microscope)?

I want to calculate surface potential of ZnO films grown on Glass substrate from SKPFM. I took a image in SKPFM mode with Pt-ir probe in AFM.

06 July 2014 6,434 2 View

Do you have any advice for preparation of Nano-dots by RF sputtering?

I am planning to synthesize Nano-dots by RF sputtering of zinc oxide on glass substrate.

05 June 2014 1,505 2 View

How can I improve the efficiency of SnS based solar cells?

As efficiency of SnS solar cell is still low; theoretical efficiency is about 24%.

03 April 2014 5,567 1 View

Does deconvolution of the UV Vis spectra of SnS nanoparticles help to interpret the graph?

I have done deconvolution of the UV Vis spectra of SnS nanoparticles dispersed in water. The UV Vis spectra contains a continuous decreased graph from lower wavelength to higher wavelength. So...

03 April 2014 4,823 3 View

Why i am getting a continuous decreasing graph from lower wavelength (300nm) to higher wavelength (1000nm) in UV-VIS spectra?

I am getting continuous decreasing spectra in the UV Visible region.

03 April 2014 8,345 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

How the Ground Plane implantation is performed without damaging (and w/o varying the undoped nature) the top Si (8-10 nm) in FDSOI technology ?

It is a general practice to introduce Ground Plane in FDSOI devices under the BoX. The Ground Planes are introduced by Ion Implantation through Top Si layer and Buried Oxide. I wanted to know that...

24 February 2021 5,974 4 View

Can a semi-conductor material have different absorption coefficient?

Does the absorption coefficient of the semiconductor changes with the change in the structure of the semiconductor? If you have a thin film and nanowire of the same semiconductor, will the...

23 February 2021 9,799 4 View

How can we determine the band gap of a composite material that is made up of a composition of direct and indirect band gap semiconductor materials?

I have a direct band gap material and an indirect band gap material. If I made a composite of both through physical mixing. Then how can I determine the band gap of such a material as the Tauc...

17 February 2021 8,104 4 View

Any resist stripper which can remove thick metal based polymer residue and which is compatible with doped silicon ?

I am looking some resist strippers which can easily remove metal based polymer residue after post dry etch process. I have some candidates below but not sure if they are compatible with doped...

21 January 2021 3,008 3 View

What is the best way to calculate electrical conductivity of semiconductors and the same system with a layer of oxide using Quantum Espresso?

I have tried BoltzTrap, and EPW but I'm not sure whether Boltzmann Transport Equation is a right approach for a complex system (semi cond. + an Oxide layer or even the semiconductor itself). Also...

11 January 2021 4,597 4 View

How to calculate the band potential of a semiconductor material using energy band gap?

I am looking for methods to calculate the band potential of ZnFe2O4 and Fe2O3.

05 January 2021 6,416 2 View

Application for Ph.D. in Inorganic Chemistry?

I hope to have the opportunity to continue toI hope to have the opportunity to continue to do more in-depth research, do more in-depth research. My main field is to use semiconductor metal oxides...

04 January 2021 1,148 2 View

What is the physical significance of series resistance of a Schottky diode?

Is series resistance a parasitic parameter of the resistance of the semiconductor in a metal-semiconductor contact? Device physics

04 January 2021 5,544 3 View

Websites for virtual lab in semiconductors?

Hello everyone, Because of Covid, now all classes are online. Is there good website that also are easy to use to teach student virtual experiments about PN junctions and semiconductors? Thank...

24 December 2020 6,637 2 View