TY - JOUR
T1 - Highly efficient White organic light-emitting device using a single emitter
AU - Bakken, Nathan
AU - Wang, Zixing
AU - Li, Jian
N1 - Funding Information:
The authors thank the National Science Foundation (CHE-0748867) for partial support of this work. N. B. thanks NSF for the GK12 Fellowship. J. L. thanks Dr. Asanga Padmaperuma and his group at Pacific Northwest National Laboratory for providing the PO15 material.
PY - 2012/1
Y1 - 2012/1
N2 - White organic light-emitting devices (WOLEDs) can be fabricated using a simple, low-cost device structure with a single uniformly doped emissive layer. The Pt-17 emitter used in these devices obtains excellent color rendering (CRI = 80) as well as bright white electrophosphoresence (CIE x = 0.37, y = 0.40) by combining efficient monomer and efficient excimer emission as demonstrated by excellent external quantum efficiency (ηext = 15.9%). The Pt-17 based WOLED is also compatible with state-of-the-art charge injection and blocking materials as well as high out-coupling device structures. Application of these existing technologies is expected to extend luminance efficiencies of Pt-17 devices to world-class values (46 Im/W and 100 Im/W respectively). In addition to avoiding the difficulty and cost of fabricating more complex device structures, the color of a single-doped device also is uniquely independent of voltage, current density, and age. Molecules like fluorine-free Pt-17 are uniquely positioned to utilize excimer emissions in order to reduce manufacturing costs and provide solutions to satisfy many of the requirements for the next generation of organic solid-state lighting.
AB - White organic light-emitting devices (WOLEDs) can be fabricated using a simple, low-cost device structure with a single uniformly doped emissive layer. The Pt-17 emitter used in these devices obtains excellent color rendering (CRI = 80) as well as bright white electrophosphoresence (CIE x = 0.37, y = 0.40) by combining efficient monomer and efficient excimer emission as demonstrated by excellent external quantum efficiency (ηext = 15.9%). The Pt-17 based WOLED is also compatible with state-of-the-art charge injection and blocking materials as well as high out-coupling device structures. Application of these existing technologies is expected to extend luminance efficiencies of Pt-17 devices to world-class values (46 Im/W and 100 Im/W respectively). In addition to avoiding the difficulty and cost of fabricating more complex device structures, the color of a single-doped device also is uniquely independent of voltage, current density, and age. Molecules like fluorine-free Pt-17 are uniquely positioned to utilize excimer emissions in order to reduce manufacturing costs and provide solutions to satisfy many of the requirements for the next generation of organic solid-state lighting.
KW - Excimer
KW - Platinum complex
KW - Solid-state lighting
KW - White organic light-emitting devices
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U2 - 10.1117/1.JPE.2.021203
DO - 10.1117/1.JPE.2.021203
M3 - Article
AN - SCOPUS:84896693995
SN - 1947-7988
VL - 2
JO - Journal of Photonics for Energy
JF - Journal of Photonics for Energy
IS - 1
M1 - 021203
ER -