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A100nm of Chromium is used as a sacrificial layer which is to be removed in order to have a microcantilever suspended. However, after wet etching of Chromium, immersing in DI water, and drying by...
20 January 2020 2,369 4 View
As we know, upon illumination, electron-hole pairs generate in the semiconductor and separate due to built-in-potential at the junction. Now, my question is if the light (635 nm) illuminates on a...
20 January 2020 8,447 2 View
Can an electron and a hole have one common coordinate y_0 of the center of the quantum orbit in a two-dimensional semiconductor in a magnetic field? (if they have the same or opposite directions...
17 January 2020 5,278 8 View
What is the average density of excitons on a two-dimensional semiconductor in an external magnetic (and without magnetic) field? What is the dependence of this density on the magnetic field B?
13 January 2020 443 2 View
Why the energy band diagram of n- type material in silicon semiconductors are lower than the energy band diagram of p- type material?
31 December 2019 3,026 13 View
I did some doping in a semiconductor and I have observed a shift from indirect band gap to direct. Prestine material has indirect band gap while doped material has Direct Band gap. My Question is,...
25 December 2019 6,716 7 View
I have prepared binary semiconductor (AB, where A and B are two different semiconductor) material in an one pot combustion method. Can any one suggest, how to calculate the percentage of...
18 December 2019 2,917 2 View
I know reduction reaction of Silica with carbon, also principle of Zone refining or single-crystal generation process. I also heard of silicon chloride purification process,But I know not ore...
20 November 2019 1,018 4 View
I have performed UPS analysis of a semiconductor, and obtained the following spectrum. According to literature, I calculated the work function to be -2 eV (taking EF=2.5 eV, hv=11 eV, and cutoff...
11 November 2019 5,658 4 View
I hve prepared a Doped Zno with diff conc. For photodegradation of a phenolic pollutant I got absorbance value higher. Is it mean that it can't be used for it or I should try something else
11 November 2019 8,637 4 View
Hello I want to know, how to chose appropriate semiconductor material for QD synthesis? it is base on bandgap? or something else? how scientists know that the I-III-VI elements (for example) are...
08 November 2019 805 2 View
I want different new ways for this subject.
07 November 2019 8,102 2 View
I want to select a photo-catalyst which is most suitable for Hydrogen production from water splitting. like TiO2, ZnO, CdS, N-ZnO-gC3N4 or any other composites which give us best results for...
07 November 2019 1,139 7 View
05 November 2019 3,675 4 View
I have a nanocomposite with three phases, i.e. Al2O3, TiO2, and Al2TiO5. I want to determine the band gap of this mixture. Is it true to report different band gap values for each phase or should I...
29 October 2019 5,954 2 View
how can i to calculate the alignement as function mobility of a ternary semiconductor InGaN as afunction of Induim molar fraction x?
23 October 2019 4,088 3 View
There could be a possibility to create chanels for elections and holes in metals upon excitation with light.
10 October 2019 8,395 2 View
10 October 2019 7,004 5 View
I am trying to etch Si with DRIE tool. I should etch it only for less than 700nm. I also need to have have rough surface. Any recommendations to increase the surface roughness?
10 October 2019 3,045 3 View
I have a three-electrode cell setup for photocatalytic hydrogen production by water splitting. FTO coated with organic photocatalyst as WE, Pt wire as CE and Ag/AgCl as RE. In my...
19 September 2019 7,711 4 View
For metal-oxide dielectric-semiconductor Schottky diode and metal-semiconductor Schottky dioode, I found that the turn-on voltage of the former was much larger than that of the latter. Is it due...
09 September 2019 8,475 4 View
How can improve the sensitivity of semiconductor metal oxides with suitable dopants for CO2 sensing? Does metal dopants like Au, Ag, Pt and Pd able to improve response and recovery time for CO2...
09 September 2019 8,755 4 View
We are having a very difficult time trying to obtain uniform deposition of Au by electroplating in selective areas. We use TSG-250 solution. Looking for some positive inputs from experienced...
09 September 2019 8,978 4 View
I have examined two compounds band gap having same pyrochlore type structure but one contained carbonate group in the vacant place of pyrochlore structure having negative band gap (-0.22 eV) but...
09 September 2019 4,480 3 View