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

Volume

3

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

225

Lastpage

232

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;

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2007.895342

Filename

4211202