Is there a mathematical relation between defect density and temperature?

Is there a mathematical relation between defect density and temperature? thanks

03 April 2019 2,552 3 View

Have thermal velocities electron and hole in semiconductors constant?

hi have thermal velocities electron and hole in semiconductors constant? What are they calculated? thanks

01 February 2019 3,177 3 View

What is the condition of plasma formation for titanium dioxide?

hi What is the pressure of plasma for the Titanium Dioxide layer under RF Sputtering?

31 December 2018 8,187 3 View

Do the following things change and how much?

hi, pleased guide me if i change thickness of different layer perovskite solar cells , or Physical conditions of making layers such as Change in pressure,Change in temperature sunstrate,...

10 November 2018 574 4 View

What is stack of HAADF STEM cross section image?

what is stack of HAADF STEM cross section image?

10 November 2018 732 0 View

How should be simulated layers with comsol software?

Hi, I want to use comsol software to simulate provskite solar cells, I dont know what kind of information is needed to simulate different layers and finally extract the best power converting...

10 November 2018 3,587 1 View

Can anyone tell me how to clean ITO coated glass for sputtring magnetron deposition?

Dear colleague Can anyone tell me how to clean ITO coated glass for sputtring magnetron deposition?

09 October 2018 1,765 0 View

Does anyone have this book?

Dear partners Does anyone have this book? quantum theory of the optical and electronic properties of semiconductors 5th edition , hartmut huang and stephan w koch thanks

08 September 2018 9,546 0 View

What is the best conditions for the titanium dioxide present at the temperatures of the RF sputtering?

hi, Please advise. What is the best conditions for the titanium dioxide coating at what temperatures and under what physical conditions (pressure, ...) is the RF sputtering method? sincerely yours

07 August 2018 5,118 1 View

What is the use of Comsol software in Provskite Solar Cells?

Advise you. Has anyone simulated Provskite solar cell with Comsol software? What basic information is better to enter in this software? The thickness of the layer?, the temperature substrate?,...

06 July 2018 9,843 3 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

How can I assign a velocity along one direction to CO2 molecules in a molecular dynamics simulation using GROMACS?

Dear all, I am trying to perform a MD simulation about the interaction between CO2 and a polymer. I create my model, solvate it and perform the NVT and NPT equilibration. Now I am not able to...

26 February 2021 10,014 3 View

CGA 300 Regulator for CO2 cylinder?

Has anyone ever tried to deliver CO2 with a CGA 300 regulator? I know that a CGA 320 regulator is standard for CO2. The issue is that I currently do not have any free CGA 320 regulators. I also...

25 February 2021 3,292 3 View

How to prepare a thin polymer film by post-polymerization/crosslinking?

24 February 2021 2,362 5 View

Is is possible to pole with corona poling pellets of the sample material instead of thin films?

As it is highly probable that pellets will have a higher degree of air gaps and voids than thin films, is it possible to pole the samples with corona poling nevertheless? Or is there the...

24 February 2021 1,349 1 View

How to troubleshoot Electrochromic Films and Electrochromic Devices?

I am trying to characterize an electrochromic system. The system uses ITO electrodes on glass, WO3 as the electrochromic film, and NiO as the ion storage layer. When I deposit NiO and WO3 and...

23 February 2021 9,592 2 View

Have anyone checked before Cyclic voltammograms of intial ITO substrate and E-teck?

As a beginner in electrochemistry, I tried to obtain cyclic voltamograms of commercial anatase powder deposited on an ITO substrate or on Eteck. After several attempts, I noticed that my cyclic...

23 February 2021 3,175 3 View

How to improve the adhesion between germanium and silicon monoxide thin film layers using EBEAM evaporation?

I want to deposit multilayer coating of germanium and silicon monoxide on silicon wafer using ebeam evaporation?

21 February 2021 2,141 3 View

How can I measure the thickness of thin layers deposited on textured glass susbtrates?

I want to measure the thickness of aluminum oxide and titanium oxide layers deposited on textured glass substates. The layer thicknesses are typically below 100nm.

21 February 2021 5,465 4 View

How do I calculate absorption coefficient of my thin film if I dont know the thickness? Or how can I calculate the thickness of my sample?

I have done Uv-vis characterisation of my thin film and have received absorbance and transmittance data. Now I want to calculate the absorption coefficient but I dont know the thickness of my...

21 February 2021 7,148 8 View