Mechanism of charge generation in p-type doped layer in the connection unit of tandem-type organic light-emitting devices
- 25 August 2008
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 93 (8), 083304
- https://doi.org/10.1063/1.2969293
Abstract
A p -type doped organic layer combined with a hole-blocking layer has been experimentally demonstrated to serve as the charge generation unit in tandem-type organic light-emitting devices. The p -type layer functions as the source of both holes and electrons. Charge separation is explained by the tunneling model that the hole-blocking layer reduces the energy barrier for the electronsgenerated in the p -type layer to tunnel through into one light-emitting unit, while the holes generated in the p -type layer can transport to the other light-emitting unit easily under operation voltage.Keywords
This publication has 13 references indexed in Scilit:
- Controlled doping of molecular organic layers: Physics and device prospectsPublished by Springer Nature ,2007
- Temperature-independent field-induced charge separation at doped organic/organic interfaces: Experimental modeling of electrical propertiesPhysical Review B, 2007
- Highly Efficient Organic Devices Based on Electrically Doped Transport LayersChemical Reviews, 2007
- Electric-field-assisted bipolar charge generation from internal charge separation zone composed of doped organic bilayerApplied Physics Letters, 2007
- Effective organic-based connection unit for stacked organic light-emitting devicesApplied Physics Letters, 2006
- Electric field-assisted bipolar charge spouting in organic thin-film diodesApplied Physics Letters, 2004
- Controlled p doping of the hole-transport molecular material N,N′-diphenyl-N,N′-bis(1-naphthyl)-1,1′-biphenyl-4,4′-diamine with tetrafluorotetracyanoquinodimethaneJournal of Applied Physics, 2003
- In situ photoluminescence investigation of doped AlqApplied Physics Letters, 2002
- Controlled p-doping of zinc phthalocyanine by coevaporation with tetrafluorotetracyanoquinodimethane: A direct and inverse photoemission studyApplied Physics Letters, 2001
- Fabrication and electroluminescence of double-layered organic light-emitting diodes with the Al2O3/Al cathodeApplied Physics Letters, 1997