Abstract
We present electroabsorption spectroscopy to measure the internal electric field in green phosphorescent polymer light-emitting-diodes with crosslinked interlayer between PEDOT:PSS and emissive layer. The phenomenon of trapped electrons screening the bulk semiconductor from the external field can explain the efficiency improvement by adding a 5-30 nm MUPD film near the anode. © 2007 SID.
Original language | English (US) |
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Title of host publication | Digest of Technical Papers - SID International Symposium |
Publisher | Society for Information Display |
DOIs | |
State | Published - Jan 1 2007 |
Externally published | Yes |