Byoung Hoon Lee, In Hwan Jung, Han Young Woo, Hong-Ku Shim, Geunjin Kim and Kwanghee Lee Multi-Charged Conjugated Polyelectrolytes as a Versatile Work Function Modifier for Organic Electronic Devices Advanced Functional Materials 24
An electron injection mechanism for conjugated polyelectrolyte (CPE) electron transport layers in organic electronic devices is demonstrated by introducing a new series of CPEs with various numbers of ionic functionalities. Energy level tuning at the CPE/metal interface can be determined directly by adjusting ion density in the CPEs. Thickness-dependent electron injection characteristics indicate that two different mechanisms must be invoked according to the CPE thickness.
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