1. Nové technologické postupy pro integrovanou organickou elektroniku
Projekt OPVK NANOTEAM
Nové technologické postupy pro integrovanou organickou elektroniku
Ing. Ondřej Chmela
Investice do rozvoje vzdělávání

2. Aim of these work
Pass through all lithography techniques for obtaining base electrode structures and others structures (all available techniques - done)
Get acquainted with all available devices to control surface properties (AFM, profilometry, SEM, contact angle – all done)
Find out right techniques for applying coatings on substrate for one and more layers (almost done)
Start with electrical measurements for obtain characterictics of materials (still in progress)
Find out a technique for encapsulation of the sensor storing properties of organic materials without reducing of sensitivity (the most important thing, but still unsolved)
Find some techniques to modify surface properties for better sensing, thinking about utilizing nanotubes, graphen and other techniques as a thin films, ALD and others. (thinking, studying and looking for collaboration)

3. What happened Surface and material preparing
Plasma cleaning of ITO substrates
PEDOT:PSS filternig by non-definited paper (value of holes???)
PEDOT:PSS coating by spincoating with different RMS => different value of depth
Measurement and evaluation of surface roughness and depth
Find some problems with structure of first layer => non-homogenous surface => possible solution is application of second layer (will be tested)

4. PEDOT:PSS measurement of depth (first layer)
RPM=4000
RPM=3000
RPM=5000

5. PEDOT:PSS surface measurement (layers comparison)
RPM=3000
RPM=3000
RPM=4000
RPM=4000
RPM=5000
RPM=5000

6. Measurement of PEDOT:PSS second layer by 3D DekTak mapping

7. Treatment of PEDOT:PSS
By ultrasonic
Nontratment

8. Ultrasonic treatment of PEDOT:PSS
Microscope
Profilometer

9. Particle size of PEDOT:PSS (big one)

10. Particle size of PEDOT:PSS (smaller one)

11. Contact angles Plasma treat - ITO Non treat - ITO Plasma treat - Glass
Non treat - Glass

12. PEDOT:PSS measurement

13. Measurement of PEDOT:PSS surface by 3D DekTak mapping

14. What happened at last weeks
Passed last exam at last week (studying)
Prepared device and station for spray-spin coating
Surface preparing
Plasma cleaning of ITO substrates for testing
PEDOT:PSS coating by spray-spin coating (first tests)
Tests were based on finding what is optimal amount for one coat
It depends on pressure and settings of spray gun
It is not looks bad but wants more testing
Combination of these both techniques looks good to obtain quality homogenous layer
PEDOT:PSS coating by spray-spin coating (second tests)
Tried diffferent settings for spincoater (RPM = 1000 – 7000)
Evaluate of dependent between spincoater speed and coat depth (profilometry or AFM)
Measurement – C-V and R-X characterization (and repairing of measurement station)

15. R = 760
R = 2,6 K
R = 830
R = 840

17. Investice do rozvoje vzdělávání
Poděkování:
Poděkování:
Budování výzkumných týmů a rozvoj univerzitního vzdělávání výzkumných odborníků pro mikro- a nanotechnologie (NANOTEAM) CZ.1.07/2.3/.00/
Investice do rozvoje vzdělávání