Extremely Efficient Indium–Tin-Oxid-Free Green Phosphorescent Organic Light-Emitting Diodes

Cai, Min; Ye, Zhuo; Xiao, Teng; Liu, Rui; Chen, Ying; Mayer, Robert W.; Biswas, Rana; Ho, Kai‐Ming; Shinar, Ruth; Shinar, Joseph

doi:10.1002/adma.201202035

Extremely Efficient Indium–Tin-Oxid-Free Green Phosphorescent Organic Light-Emitting Diodes

Journal Article · Thu Jul 12 04:00:00 EDT 2012 · Advanced Materials

DOI:https://doi.org/10.1002/adma.201202035· OSTI ID:1053240

Cai, Min ^[1]; Ye, Zhuo ^[1]; Xiao, Teng ^[1]; Liu, Rui ^[1]; Chen, Ying ^[1]; Mayer, Robert W. ^[2]; Biswas, Rana ^[2]; Ho, Kai‐Ming ^[1]; Shinar, Ruth ^[3]; Shinar, Joseph ^[1]

Ames Laboratory, and Iowa State University, Ames, IA (United States)
rshinar@iastate.edu
Iowa State University, Ames, IA (United States)

Here this paper demonstrates extremely efficient (η_P,max = 118 lm W^-1) ITO-free green phosphorescent OLEDs (PHOLEDs) with multilayered, highly conductive poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) films as the anode. The efficiency is obtained without any outcoupling-enhancing structures and is 44% higher than the 82 lm W^-1 of similar optimized ITO-anode PHOLEDs. Finally, detailed simulations show that this improvement is due largely to the intrinsically enhanced outcoupling that results from a weak microcavity effect.

Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)

DOE Contract Number:: AC02-07CH11358

OSTI ID:: 1053240

Report Number(s):: IS-J--7782

Journal Information:: Advanced Materials, Journal Name: Advanced Materials Journal Issue: 31 Vol. 24; ISSN 0935-9648

Publisher:: Wiley

Country of Publication:: United States

Language:: English

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Extremely Efficient Indium–Tin-Oxid-Free Green Phosphorescent Organic Light-Emitting Diodes

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