Electrical properties of ultra thin film?

More Alireza Kashir's questions See All

How to detect the frequency of Soft-Mode?

Hello, What is your suggestion for detecting the frequency of soft mode in thin film? (less than 20 nm) I need to see the change of frequency as the temperature decreases. Thanks

07 August 2018 4,189 2 View

Which metals are grown well using PLD?

Hello, I want to grow a metal as the top electrode right after growing the dielectric material. Actually, it also works as a capping layer to protect the dielectric from the atmosphere effect. So...

05 June 2018 7,461 3 View

How to calculate the dielectric constant of thin film?

Hello I have fabricated interdigitated electrodes on thin films and measured in plane capacitance. Now I want to calculate the dielectric constant of thin film. How can I do that?

31 December 2017 7,689 7 View

Electric Field Penetration into Dielectric Media with COMSOL?

Hello, I wanted to solve the penetration of electric field lines into a hetero-structure thin film in COMSOL and see that how much of field can penetrate into substrate (image is attached) . I am...

11 December 2017 2,284 4 View

Which solution is the best for Ti etching?

Hello, Please let me know how to etch a 5-nm Ti thin Film deposited on NiO thin Film (20 nm). Thanks in advance

11 December 2017 4,667 7 View

How to detect Neel Temperature?

Hello, I have deposited a less than 20-nm NiO thin film on SrTiO3 substrate. How can I detect the Neel Temperature of thin film? Thank you so much

09 October 2017 3,992 3 View

Magnetic Structure of LaMnO3 ?

Hello, Anyone knows the Magnetic ordering feature in LaMnO3? Is there a superexchange through Oxygens (like in the case of simple MnO) ? By the way, As we know the crystal structure is...

06 July 2017 7,848 3 View

In-Plane lattice constant by XRD?

Dear all, Is it possible to measure in-plane lattice constant of an epitaxial grown thin film by XRD? How can I do that? Thanks

04 May 2016 6,056 4 View

How to calculate the lattice constant?

04 May 2016 9,498 2 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 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

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

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

24 February 2021 2,362 5 View

How to delaminate copper in water-based anodes?

Hello everyone, I'm looking for a way to delaminate copper current collector of water-based anodes in Li-ion batteries without damaging the graphite film. I tried different materials such as HNO3...

24 February 2021 3,785 3 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

What is the optimum time and temperature of blanching and pre-frying potato for frozen fries?

I am helping a local home industry for developing frozen fries from their local farm. I want to know what is the optimum blanching and pre-frying temperature and time for processing. Please also...

23 February 2021 1,616 5 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

Is there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 View

Ioannis Samaras

dear Alireza,

AC or DC measurements ?

Murat Sertkol

Lets assume DC, Dr. Samaras. What would be your suggestion? In addition to this, how can this be possible to measure resistivity lets say in such high resistance?

Thanks in advance.

Alireza Kashir

Thank you do much for consideration. I want to measure dielectric properties vs Temperature.

Shahid Aslam

If you made a Metal -Oxide-Semiconductor structure you could derive a lot of information from both the I vs V and C vs V characteristics.

deposit dielectric onto n-type or p-type Si wafer and then make a metal contact on top (Al or Au). Take (capacitance vs voltage) and (current vs voltage) measurements as a function of temperature using a heated chuck on your wafer prober (if you have one). You will establish lots of parameters.

Thank you so much

for dielectric properties vs Temperature e.g. AC measurements then :

form 2 electrical contacts on the bottom (metallic) electrode (the substrate) and at least 2 electrical contacts "on the insulating 10-nm-thin film". Use at least 2 "on thin film" for your actual measurement, but I propose to form some more (furthermore) electrical contacts in order to choose one pair (of correct 2 electrical contacts). NOTE: A correct contact should have no pin holes to bottom (the substrate). Eis measurements will give possibility to have either eq. electr. models or more simple the common I vs V and C vs V characteristics.

Dear Ioannis, Thank you for your help. I will try...

dear Murat Sertkol,

as the note in AC measurements, plus 1 or (better) 2 more correct electrical contacts "on the insulating film" in order to verify the (pseudo-) DC measurement to be "the same". In AC measurements you have a theoretical help from the eq. electr. models to verify the (trend to f=>0, i.e. real) DC measurement, since:

the time constant TC (>>10 s) of some highly insulating films may be too high for common DC measurements, as well as the electrical properties may be

erroneously correlated with imperfections of the instruments and cables.

Dear Ioannis,

I think I should do AC measurement.

Thanks,

Ramesh Mohan Thamankar

It is common to measure the electrical properties of insulator film ( d ~ 10nm) by making the M-I-M stacks of M-I-S stacks. If you can deposit thinner films, lets say 5nm, then you could use STM( room temperature) to get some idea about the I-V characteristics and can get lot many information about the breakdown characteristics, Random telegraphic noise etc.

thanks dear Ramesh...