Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.3257979
Title: Solution-processed conjugated polymer organic p-i-n light-emitting diodes with high built-in potential by solution- and solid-state doping
Authors: Sivaramakrishnan, S. 
Zhou, M. 
Kumar, A.C.
Chen, Z.-L.
Png, R.-Q. 
Chua, L.-L. 
Ho, P.K.H. 
Issue Date: 2009
Citation: Sivaramakrishnan, S., Zhou, M., Kumar, A.C., Chen, Z.-L., Png, R.-Q., Chua, L.-L., Ho, P.K.H. (2009). Solution-processed conjugated polymer organic p-i-n light-emitting diodes with high built-in potential by solution- and solid-state doping. Applied Physics Letters 95 (21) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3257979
Abstract: Polymer p-i-n homojunction light-emitting diodes (LEDs) comprising p -doped poly(dioctylfluorene-alt-benzothiadiazole) (F8BT) hole-injection, intrinsic F8BT emitter, and n -doped F8BT electron-injection layers have been demonstrated. A thin F8BT film was photocrosslinked and bulk p-doped by nitronium oxidation, then overcoated with an F8BT layer which was then surface n-doped by contact printing with naphthalenide on an elastomeric stamp. These LEDs exhibit high built-in potential (Vbi =2.2 V), efficient bipolar injection, and greatly improved external electroluminescence efficiency compared to control devices without the p-i-n structure. A modulated photocurrent technique was used to measure this Vbi, which systematically improves with diode structure. © 2009 American Institute of Physics.
Source Title: Applied Physics Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/94845
ISSN: 00036951
DOI: 10.1063/1.3257979
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