Shantanu Saha

11 Questions 3 Answers 0 Followers

Questions related from Shantanu Saha

How to detect the polymorphism of a material with monolayer thickness?

We have grown boron nitride with a monolayer thickness. XRD usually is used to understand the polymorphism of any material. However, due to the minimum thickness of the sample, it won't work for...

16 April 2024 5,392 1 View

How to calculate in-plane lattice strain for 2D material?

I am working with h-BN and need to find out the strain due to in-plane lattice constant. The famous Williamson-Hall method may not be applicable here as it analyzes XRD for calculation of strain...

20 October 2020 7,581 4 View

How would you confirm that emission from photoluminescence (PL) is spin dependent?

Point defects in h-BN could be spin dependent. But is it possible to prove it through PL measurements only? What would be background physics ?

13 June 2020 4,375 0 View

How to identify the point defects in h-BN responsible for single photon emission?

For instance, confocal microscope and AFM can be used to identify the defects present in the sample. But which theory can ensure that out of multiple defects which defects we should focus to get...

19 May 2020 3,109 0 View

What physical process determines the property of photon entanglement in a SPE?

For instance, both nitride NW-QDs and h-BN point defect based SPEs seem to exhibit photon entanglement. Which platform will provide stronger entanglement? I suspect, that purity of the single...

20 January 2020 6,589 2 View

Is highly oriented pyrolytic graphite (HOPG) a good absorber at telecom wavelength (1550 nm)? If yes then what is the remedy for zero absorbtion?

HOPG is a good substrate for growth of h-BN. One major application of h-BN is single photon emission which can be used for telecom wavelength. Can anyone give me any insight about the absorption...

12 September 2019 6,485 1 View

Is anyone working with GaN based Single Photon Emitter by using the defects only?

I have seen people working with GaN based QD or they are exploring the defects of SiC or Diamond etc. So, I was wondering if any researcher out there is available to discuss about the defects of...

02 January 2019 3,345 1 View

Is it possible that phosphorus dopants escape from wafer at high temperature annealing (1000 deg )?

Phosphorus was implanted via plasma immersion in implantation technique.

18 June 2016 1,785 3 View

If SiGe is pseudomorphically grown on Si, how could one determine the in-plane lattice mismatch between Si and SiGe layer?

SiGe (67.93), Si (69.13).

09 March 2015 7,362 1 View

How could I calculate a) out of plane lattice mismatch and b) in-plane lattice mismatch between SiGe (67.93 degree) and Si (69.13 degree) ?

Si and SiGe . Kindly provide your answer with required formulas.

20 February 2015 953 1 View

Is it possible to manipulate the band structure of any material to change the curvature of the band and thus change the effective mass and mobility?

If yes then how?

09 August 2014 1,353 3 View