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Questions related to Thin Films and Nanotechnology
I am using TTIP as a precursor to producing TiO2. Organic solvent: IPA and Acid: HCl I am preparing sol in different proportions, but i am ending with gel formation or milky white suspension...
26 November 2020 1,544 10 View
Hi, I am working on fabrication of the tin perovskite solar cells. Tin perovskite solar cells are known for their low stability in ambient conditions due to intensive oxidation of tin. Therefore,...
05 September 2020 4,413 4 View
We know different material has different density and acoustic impedance. A particular value needs to be specified to get the actual deposition thickness of a particular material through thickness...
19 August 2018 1,350 7 View
I have seen most papers reported on the adhesion energy between SiO2 substrate and graphene. However, it is quite hard to find information or data on the adhesion energies for graphene on other...
08 August 2017 475 1 View
When measuring the devices, I have found that the gate is connected however the device is not turning on i.e the Id-Vg curve is flat. Any suggestions as to why this might be?
29 July 2017 7,829 2 View
I am exploring IR reflecting materials grown on a glass substrate. Can graphene be used as IR reflector doped with other material.
27 July 2017 2,838 5 View
What is Elecrochemical etching? Can you please give me some article on it?
26 July 2017 2,570 3 View
If i am depositing the TOP metal contacts of Au/Cr with the thickness 250 nm/3-5 nm. Cr is used as an adhesion layer and very thin (3-5 nm). Cr is first in contact with the film. Than how i can...
26 July 2017 8,928 3 View
I have a device structure of ITO / HTL / Active layer / ETL / Al. I would like to know whether this device has a phonon assisted recombination or not. Can someone suggest me some experiments/...
26 July 2017 1,147 1 View
Which companies do people buy those samples from?
25 July 2017 9,114 1 View
In order to deposit Al2O3 thin film on (100) Si substrate(500um)/Al(~25nm) thin film, I choose rf megnetron sputtering to achieve it. Here's my parameters: based vaccum: 2e-3Pa sputter Argon...
25 July 2017 8,261 9 View
Hello all, Could anyone suggest me how to get a very uniform graphene oxide film? I used dip coating, spray coating and spin coating of GO on glass slide. But none of these methods worked. When I...
24 July 2017 6,572 5 View
Hi everyone: I found a problem when I use Corona method to pole my PVDF thin film sample. I make my sample on PEN substrate which is coated with a layer of Al as bottom electrode, and spin...
24 July 2017 3,115 5 View
How to calculate the dose required for the lithography of the sample (composites or pristine sample)? Is it any theoretical formula based on thickness, materials, exposure time, distance between...
22 July 2017 2,763 1 View
I have samples of ZnO thin films, I will irradiated by O2 plasma cleaning, I would like to take XPS measurement before and after Plasma irradiation, my question which kind of information we...
22 July 2017 4,469 3 View
I have some particles that are about 300 micrometers tall in a PDMS mold. I'd like to collect these particles from the mold. I've tried using tape, and although it works, removing the particles...
18 July 2017 6,759 1 View
Does the epitaxy of Ag grown on Si surface have any effect on the surface enhanced raman scattering (using R6G)?
18 July 2017 1,730 2 View
I have prepared ZnO nanorod powder and I have to do Current density-Voltage (J-V) measurement. Can anyone suggest me how sample preparation is done from ZnO nanorod powder
18 July 2017 3,167 3 View
I've been trying to get good samples from exfoliating graphite onto 300nm SiO2. My samples keep turning out very needle-like and streaky. The larger flakes are a good shape and size, but the...
17 July 2017 1,212 1 View
Dear colleagues, do you have an idea how to clean ZnSe ATR crystal from deposited silver nanoparticles?
17 July 2017 6,760 0 View
Film materials: PDMS, PVA, different polymer
12 July 2017 5,096 3 View
want to contact the person working in the field
09 July 2017 1,462 2 View
I have read articles where photolithography is performed successfully on a paper substrate. One article said they dipped the paper into the SU-8 and then put it onto the spinner. My thoughts are...
07 July 2017 8,618 3 View
how to prepare GO thin film from the GO powder? what is the best base material on which i can coat GO for gas phase sensing application?
07 July 2017 3,615 4 View