Why i am not able to see photoluminescence signal using transfered MoS2 on to the FTO substrate?

i transfered mos2 on to the FTO substrate .when i check XRD and Raman i got cleared peaks where as in photoluminescence i did not get any peaks may i know what is main reason ?

08 September 2019 7,244 2 View

Can any one suggest why Mo(molybdenum) metal work better for oxygen evolution?

I saw some publication where Mo with different alloys are good for HER or OER ..? in my case with bare Mo substrate we are getting a better result ? is there any reason special reason like it...

02 March 2019 2,665 5 View

What are different ways to make Titanium nitride thinfilm into nanoparticles ?

Can any one suggest me is it possible to make 10 nm Titanium nitride thinfilm into nano particles or nano islands using annealing process at lower temperature or please suggest me any route to do...

01 February 2019 6,705 4 View

Is it possible to transfer a 50nm metal oxide loaded on graphene to nickel foil ?

Can any one suggest me .how to transfer 50nm deposited metal oxide( example wo3 ) on graphene from foil to another foil without damaging metal oxide

11 December 2018 3,089 3 View

Can any one suggest me electron flow from sticked solar cell electrode to FTO substrate ?

recently i am trying to do solar cell based water splitting experiment .i am using p-type based substrate .Due to limited size of solar cell . i need to stick solar cell to FTO substate .solar...

10 November 2018 5,889 0 View

Can any one suggest best ohmic contact for P-Ge?

I am working on III-V junction solar cell based water splitting .in my case i don't want to use noble metals as a back electrode(ohmic contact ) .can any one suggest me best earth abundant...

09 October 2018 8,838 4 View

How to find perfect thickness of a semiconductor for maximum absorption in photoelectrochemical cells ?

I want to deposit Al203 on SI and FTO substrates .is there any way to find perfect thickness of the Al203 for maximum absorption on SI and FTO in case of photoelectrochemical cells

05 June 2018 1,639 5 View

Why in photoelectrochemical cells P type silicon is thicker and N-type material is in nanometer is it because of diffusion ?

I read many papers recently related to photoelectrochemical cell papers on P-type silicon substrtate they had grown on n-type SrTio3 or Al203 below 10 nanometers.the Papers are suggesting to...

03 April 2018 6,561 3 View

What is main difference between deep donor,deep traps and shallow donor ?

genearlly in metal oxides there will be formation of oxygen vacancies which act as deep donor.some publication suggest to add shallow donor to overcome this issue .? may i know what is the main...

31 December 2017 3,608 2 View

Why seed layers are used for gas sensors ?

I saw in some publications .they will grow a seed layer on the top of si/sio2 .example si /sio2 / zno seed layer /sno2 nano wires for No2 application . As per my knowledge zno is good for No2...

10 November 2017 1,189 2 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 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

What thickness need for ITO to use as conductive layer?

I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...

01 March 2021 395 3 View

How to remove the residual PDMS on the silicon mold?

Incompletely cross-linked pdms are difficult to remove.

01 March 2021 798 3 View

What condition required for coating of Fe3O4@SiO2 by using APTES?

I tried coating Fe3O4@ SiO2 by using APTES in 5% water-ethanol but it is not coated. Kindly suggest a solution for it. Thanks

24 February 2021 5,992 4 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

Can't recognize exact phase and PDF card no of Silicon carbide in XRD?

We have deposited silicon carbide on carbon substrate using one PVD technique. Due to amorphous behavior of SiC at low deposition temperature, we performed heat treatment of those films at...

22 February 2021 2,072 3 View

Amorphous silica XRD peak at around 10 degree?

21 February 2021 3,417 5 View

What is the detection limit of ED-XRF technique for transition metals in silicon ?

Hi everybody, please, can someone tell us if the transition metals (W, Fe, Ni, etc ...) in silicon destined for solar cell manufacturing can be detected by ED-XRF technique. Note that the...

18 February 2021 6,231 4 View