Title :
Charge Transport and Injection to Phenylamine-Based Hole Transporters for OLEDs Applications
Author :
So, Shu K. ; Tse, Shing C. ; Tong, Ka L.
Author_Institution :
Dept. of Phys., Hong Kong Baptist Univ., Kowloon
fDate :
6/1/2007 12:00:00 AM
Abstract :
We studied the hole injection and transporting properties of four phenylamine-based hole-transporters useful for organic light-emitting diodes. The hole-transporting properties were examined in details by time-of-flight technique whereas their hole-injecting properties by current-voltage measurements and dark-current space-charge-limited-current technique (DI-SCLC). All materials were found to exhibit essentially trap-free hole transports. We discovered that a conducting polymeric anode, PEDOT:PSS, can act effectively as an Ohmic contact for hole injection into the PA compounds for DI-SCLC experiments
Keywords :
conducting polymers; electric current measurement; hole mobility; ohmic contacts; organic light emitting diodes; voltage measurement; OLED applications; PEDOT:PSS; carrier mobility; charge injection; charge transport; conducting polymeric anode; current-voltage measurements; dark-current space-charge-limited-current technique; hole injection; ohmic contact; organic light-emitting diodes; phenylamine-based hole transporters; time-of-flight technique; Amorphous materials; Anodes; Current measurement; Electron mobility; Optical materials; Organic electronics; Organic light emitting diodes; Organic materials; Organic thin film transistors; Thin film transistors; Carrier mobility; charge transport; organic light-emitting diodes (OLEDs); phenylamines;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2007.895342
