21 Questions 46 Answers 0 Followers
Questions related from Mikhail Pylnev
Hello everyone, When you deposit Pb- perovskite layer in a glove box, what is the SOP of operating the glove box? 1) What is the pressure before and during deposition(over 1 atm or below?) 2)...
02 July 2023 5,214 1 View
We put titanium dissopropoxide bis (acetylacetonate) in a freezing section for 1 day. Now the chemical is crystallized and segregated with the solvent. It won't go to a mixed state by itself. What...
15 April 2022 5,763 2 View
I need to put 2 pieces of glass together and seal them with epoxy. I make one piece smaller and deposit Uv curable epoxy to the edges of the smaller glass piece. However, no matter how high...
06 January 2022 396 2 View
What does the color of a spiro-ometad film indicate? I got purple, green, red, even black color of the spiro film. Is there anything we can get from the preliminary color analysis(e.g. oxidation...
22 February 2021 2,296 4 View
We prepare TiO2 samples using Titanium Isopropoxide, Ethanol, and Glacial Acid; We increase the amount of ethanol to decrease the thickness of the layer. However, the layers with thicknesses...
31 August 2020 4,383 13 View
why images in scanning electron microscope(sem) got bright stripes? an image is attached. it does not look like a material related contrast(polymers). it does not disappear with current, voltage...
03 January 2020 2,641 4 View
The problem is that in our PFG 600 RF , C-Load and C-tune tuning has no reaction on the reflected current. In the manual the problem is mentioned as "motor unit of C-Tune/Load is blocked". We...
08 March 2018 6,693 3 View
I am planning to anneal my samples that should not be exposed to oxygen in evacuated and encapsulated ampoule. May you share the knowledge about the process? After the vacuum in ampule is created...
22 May 2017 7,083 1 View
I need to measure the optical absorption of a thin film( ~500 nm). Attached are T% and R% spectra. I may use either Beer–Lambert law to calculate A% using R% data or Kubelka-Munk function using...
15 September 2016 7,603 11 View
The deposition rate from the 2 Ti targets in the reactive magnetron sputtering system has dropped significantly(depositing TiO2), from 30 nm/min to ~0.5 nm/min. What can be the reason of that?
19 August 2016 9,325 21 View
I deposited 70 nm of Ti onto SiO2 substrate, then 1000 nm of TiO2 on the Ti layer[at RT]. What temperature and annealing time should I use for the annealing step to achieve complete homogenization...
14 June 2016 9,724 1 View
We use RF-generator PFG600-RF[Trumpf] for depositing thin films in our3-target magnetron sputtering system. It works perfectly fine for conductivetargets and it is very easy to eliminate REFP...
06 April 2016 1,629 25 View
In this paper (DOI: 10.1002/anie.200704788 ), the authors impregnated rutile TiO2 particles with a solution of titanium tetraisopropoxide in 2-propanol (the weight ratio of anatase phase to rutile...
21 February 2015 691 2 View
Is there a standard process for measuring the photocatalytic activity of TiO2? Under standard I mean well-studied.
01 February 2015 1,288 7 View
Solvothermal synthesis is based is a method that utilizes phase reactions in non- aqueous or aqueous (hydrothermal synthesis) media at high temperature and pressure to crystallize materials...
27 January 2015 1,569 8 View
What surface parameters define the reactivity of faces of TiO2?
25 January 2015 9,467 13 View
Could you provide a paper in which the concentration of Ti3+ states that are presumably responsible for the shift to the visible region, is quantified?
26 December 2014 2,977 5 View
What is the most reproducible modification of TiO2 towards activity in the visible region? I mean an approach(doping with specific impurity, growth in a certain shape, decoration techniques, etc.)...
23 December 2014 202 3 View
Could you provide DOIs of papers on only interstitially nitrogen-doped TiO2? I need that the concentration of Ni was given there, as well as the absorbance spectrum.
23 December 2014 6,489 6 View
I encountered with this many times. For example, in "Journal of Hazardous Materials 168 (2009) 253–261" the authors obtained N-doped TiO2 using different precursors. Actually, the preparation...
21 December 2014 7,877 2 View
I got depth profile of TiO2 film with SIMS. Some species: TiO- and O- got straight-line distribution throughout the films, while others: C- and H- got declining distribution from the top of the...
01 January 1970 5,846 3 View
