I have got a slope for finding glass transition of polymer. Does anyone have suggestions of finding exact temperature for the glass transition. If so could you please how to find that in excel...if you can direct me to any link then also its fine.....your help is highly appreciated
First of all thank you for all the inputs that you are giving...yes H2o2 is fresh and piranha is from new batch made just 10 mins before cleaning...
@IRstuff- That might be the case...I am dispensing it manually using a 5 ml pipette..how to avoid this air during dispense...while dispensing I am...
I am keeping my wafer in piranha for 45 mins. .then I rinse the wafer three times in different beaker of DI water...Then dry it with N2....my H2SO4:H2O2 ratio is 3:1.....Th streaks become thinner as it hoes away from the center.. ...
AT first I am using syringe to filter out the solutions...and...
I am using same PEDOT:PSS which you mentioned..I am using it as it is. the viscosity is same as of water....I dint try dynamic dispensing as it never worked for me.....I have tried 5000 rpm for 1 min...and it dint work either...Thanks for you suggestions though...
No I cant see the particulates. I an seeing just streaks from center. I dont know what to call this defects. The chances of comet tail defects are very rare as I am filtering the solution before spin coating.
Manufacturer has suggestion of playing with speed and time. I played with it. Its not...
I have got a Si wafer 4" in diameter. I am cleaning it using Piranha solution. I am spin coating water soluble PEDOT:PSS on top of it with static dispensing ( I am dispensing the material around 5ml before the spin starts). The material I deposit covers the substarte completely. I am spinning at...
I have got a Si wafer 4" in diameter. I am cleaning it using Piranha solution. I am spin coating water soluble PEDOT:PSS on top of it with static dispensing ( I am dispensing the material around 5ml before the spin starts). The material I deposit covers the substarte completely. I am spinning at...
