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Charge Transport and Injection to Phenylamine-Based Hole Transporters for OLEDs Applications

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3 Author(s)
Shu K. So ; Dept. of Phys., Hong Kong Baptist Univ., Kowloon ; Shing C. Tse ; Ka L. Tong

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

Published in:

Journal of Display Technology  (Volume:3 ,  Issue: 2 )