Phosphine Oxide Based Electron Transporting and Hole Blocking Materials for Blue Electrophosphorescent Organic Light Emitting Devices

Journal Article · Tue Oct 26 04:00:00 EDT 2010 · Chemistry of Materials, 22(20):5678-5686

DOI:https://doi.org/10.1021/cm1013653· OSTI ID:1000134

Von Ruden, Amber L; Cosimbescu, Lelia; Polikarpov, Evgueni; Koech, Phillip K; Swensen, James S; Wang, Liang; Darsell, Jens T; Padmaperuma, Asanga B

We report the design, synthesis, thermal, and photophysical properties of two phosphine oxide based electron transport/hole blocking materials, 2,6-bis(4-(diphenylphosphoryl)phenyl)pyridine (BM-A11) and 2,4-bis(4-(diphenyl-phosphoryl)phenyl)pyridine (BM-A10) for blue electrophosphorescent organic light emitting devices (OLEDs). The use of these materials in blue OLED with iridium (III) bis[(4,6-difluorophenyl)-pyridinato-N,C2’]picolinate (Firpic) as the phosphor was demonstrated. Using the dual host device architecture with BM-A10 as the ETM yields a maximum EQE of 8.9% with a power efficiency of 21.5 lm/W (4.0V and 35 cd/m2). When BM-A11 is used as the ETM, the maximum EQE and power efficiency improves to 14.9% and 48.4 lm/W, respectively (3.0V and 40 cd/m2).

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1000134
• Report Number(s): PNNL-SA-72786; 35598; 830403000
• Journal Information: Chemistry of Materials, 22(20):5678-5686, Journal Name: Chemistry of Materials, 22(20):5678-5686 Journal Issue: 20 Vol. 22; ISSN CMATEX; ISSN 0897-4756
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ARCHITECTURE
DESIGN
EFFICIENCY
ELECTRONS
Environmental Molecular Sciences Laboratory
IRIDIUM
PHOSPHINE OXIDES
PHOSPHORS
SYNTHESIS