How should i interpret this J-V characterisics in oled devices(attach pictures)?

i know that the current density characteristics in oled device are as follows. 1) ohmic current region 2) charge trapping region 3) space charge limited region and in 2) charge trapping region,...

01 February 2019 2,454 6 View

In QD-OLED, anybody here who know why the surface of metal oxide(HIL) is treated by o3-plasma or uv-ozone?

when i research papers about inorganic HIL in QLED, i found some paper that use CuO, NiO.. transition metal oxide. they have structure of ITO/TMO/PVK/QD/ZnO/Al and after TMO is coated in ITO, TMO...

11 December 2018 7,523 0 View

When the work function chage by ozone treatment on metal oxide surface, is it only on the surface?

when i deposit metal oxide on ITO substrate by spin coat if the surface of metal oxide is treated by ozone treatment like UV-ozone or O3-plasma, is work function chage only limited to the...

11 December 2018 3,917 5 View

Anybody here who konw how to and when to add stabilizer in NiO nanoparticles powder?

hi, im studying inorganic material NiO nanoparticle as hole injection layer in OLED. i sysnthesis NiO nanoparticles by solvothermal. after solvothermal process, i cetrifugate and wash the...

10 November 2018 5,631 5 View

Why non-rectifying junctions occur in ITO/metal oxide/Al structure?

hi im studying inorganic material as HIL in OLED. i sysnthesis NiO nanoparticles by was of solvothermal as HIL material. and i fabricated OLED devices that have the structure of...

10 November 2018 3,844 5 View

What is the role of acetic acid as stabilizer in NiO nanoparticle solution?

i'm studying inorganic material in QD-OLED and have sysnthesised NiO nanoparticles. at first , i didn't use stabilizer acetic acid. but afterward i realized that i had to use acetic acid as...

09 October 2018 5,559 5 View

What is the role of acetic acid as stabilizer in nickel oxide nanoparticles?

i'm studying inorganic material in QD-OLED and have sysnthesised NiO nanoparticles. at first , i didn't use stabilizer acetic acid. but afterward i realized that i had to use acetic acid as...

09 October 2018 8,579 0 View

When the ZnO synthesis, how to dry the precipitate that is in tube?

i have synthesize ZnO nanoparticle. in last process, after the tube containing the solution was centrifuged , the white precipitate remains in the tube bottom. then i add ethanol to obtain ZnO...

05 June 2018 2,775 9 View

About current density - voltage graph in ITO/PEDOT:PSS ?

i fabricate OLED device. the structure is ITO/PEDOT:PSS/PVK/QD/ZnO/Al. To see the hole injection , i fabricated ITO/PEDOT:PSS/Al. then i checked the cureent density - voltage. most of the graphs...

05 June 2018 9,350 4 View

When i use thermall evaporation, can i use duplicate source materials?

thermal evaporation of our labortory is being used as an Al(aluminum) deposition. but i want to deposit WO3(tungsten oxide) with this thermal evaporation instrument. is not the vacuum chamber...

04 May 2018 6,643 4 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

Adherance of Polyaniline coating over stainless steel?

Is the electropolymerisation of polyaniline coating over stainless steel (SS) via Cyclic voltammetry technique is really adherant? Else how to improve the adhesion of the coating, whether any...

01 March 2021 8,220 2 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

Is there a method of determining feed digestibility without the need to re-pellet the feed?

I am aiming to determine the ADC values of a commercial fish feed, but I do not have a steam pelleter or extruder available to me. Ideally, the pellets could be coated with some inert marker....

28 February 2021 7,967 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 to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

How to immerse bricks in wax ( for coating ) ?

Do we immerse the bricks horizontally or vertically ? #bricks#waterproofingsurface#civil#engeenering#chemicalengineering#wax#parafinwax

28 February 2021 6,685 2 View