How to perform depth resolved cathodoluminescence for ZnO nanowires?

More Avishek Das's questions See All

Silicon native oxide thickness value?

Hi, Can anyone help by referring few articles or suggestions about the p-Si native thickness value. The conditions are the p-Si is cleaned in HF solution for 5 min and rinsed in water for few...

07 August 2016 10,082 0 View

Huge cut-in voltage from 1/C2- V plot for p-n diode?

Hi . I have performed a Capacitance-voltage experiment for my p-n diode sample. I plotted the (1/C)^2 - V and found that the Cut-in voltage is very high (more than 10V). It should come like...

07 August 2016 7,374 2 View

What is the difference in the X-Ray diffraction of Si (100) and Si (111) substrate?

Dear All, Can you tell me what will be the difference in the XRD pattern of bare Si (100) and Si (111) substrate. I am getting a huge peak at ~69.9 degree (2 theta) for both the substrate, Which...

31 December 2015 6,152 3 View

Do you feel that worldwide research collaboration is important?

Hello Researchers, Do you feel that worldwide research collaboration is important? Share your ideas with me and others. I think collaboration enhances the quality of research and friendship within...

11 December 2015 3,508 1 View

How to choose your Ph.D. Supervisor?

Hello World, Ph.D. supervisor should be the most influential people in your academic life. Guys, I would appreciate hearing your thoughts and experiences on this issue of choosing a Ph.D....

01 January 1970 6,203 7 View

Can you brief your project goal?

What kind of synthesis you are going to perform? Any novel technique regarding its seedless growth?

01 January 1970 881 1 View

Binder for ZnO nanoparticles in graphite paste electrode?

I have been using paraffin, but the deposited ZnO still detach from electrode. What is the best binder to modify graphite paste electrode with ZnO nanoparticles?

03 August 2024 4,624 3 View

I have synthesized a composite of ZnO and In2O3 with variations in ZnO content. In Raman , what is the peak observed at 130 cm-1?

Dear all, I have noticed, as the ZnO content increases, the Raman intensity at 100cm-1 also increases. However, there is a peak nearby at 130 cm-1, which I could not find in any paper related to...

28 July 2024 5,410 1 View

Waht is the effect of isoelectric point on MB dye photodegradation by ZnO nanoparticles?

Recently I have submitted an article regarding MB dye degradation by ZnO nanoparticle. I received a suggestion to include the discussion on the effect of pH. I want to know what is the impact of...

19 July 2024 4,868 1 View

Can other standards be used to generate IRF file instead of LaB6,Si etc.,,, for Rietveld Refinement?

Hi, my research involves in ZnO synthesis. I have performed rietveld refinement of my samples and obtain a good fit using Fullprof suite software. However to obtain the crystallite size, the IRF...

07 July 2024 3,526 3 View

What can a shift in Zn2p edge of ZnO/CuO nanocomposites mean in XPS?

I synthesized pure ZnO with a hydrothermal microwave method and decorated them with CuO with the incipient wetness impregnation method. The Zn2p edges of pure ZnO are at 1044.7 and 1021.6 eV...

18 June 2024 9,405 2 View

Which deposition technique is better (Spin Coating/Dip Coating) for making Ni doped ZnO thin film for better photocatalytic activity?

If I want to improve the photocatalytic activity of Ni doped ZnO thin film then which would be the better deposition process for thin film Spin Coating or Dip Coating?

18 June 2024 7,678 2 View

Can i deduce the presence of surface states based on my XPS data?

In my XPS spectral, i detected oxygen group bonded to carbon and in my zinc spectral (note : my sample is ZnO) ...there are two valent zinc species available, (which is unsual as my previous...

17 June 2024 3,888 2 View

What are the possible parameters needed to be tuned for better photocatalytic activity of thin film?

If I want to enhance the photocatalytic activity of Ni doped ZnO thin film. For this what are the parameters I need to tune and how? Related this all scientific answers/explanations are highly...

16 June 2024 4,533 1 View

Can zinc oxide (ZnO) effectively purify water, and what are the key mechanisms that make it suitable for water treatment?

I am interested in understanding the effectiveness of zinc oxide (ZnO) for water purification or treatment. I would like to know about its specific mechanisms and applications in addressing water...

14 June 2024 5,389 1 View

Luciferase assay lysis?

Hi! I'm doing a renilla luciferase assay with coelenterazine and HEK293T cells transfected with AP-1 renilla luciferase. I'm wondering if the cells need to be lysed prior to adding coelenterazine...

13 June 2024 9,936 5 View

Nirmal Kumar Bera

depth is directly proportional with the bias voltage and its emission spectra's pick (s) give you penetration depth...

Vladimir Mikhailovskii

Good day. About electron penetration depth - i suppose the easier way to estimate it is to use any modeling software like casino 2/3. (http://www.gel.usherbrooke.ca/casino/). For example, for 10 kV accelerating voltage casino 2.4 gives about 300 nm penetration depth into ZnO.

Thomas Walther

MC simulations will tell you the depth profile of the electrons in SEM but not so easily where the light signal comes from because what you detect depends on the (energy dependent) cross-section and the self-absorption in the sample and possible light guiding/ reflection effects at the free surface.

Avishek Das

Hi,

Thank you all of you for your responses..