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20.2: Ultra‐Bright, Highly Efficient, Low Roll‐Off Inverted Quantum‐Dot Light Emitting Devices (QLEDs)
Author(s) -
Dong Yajie,
Caruge JeanMichel,
Zhou Zhaoqun,
Hamilton Charles,
Popovic Zoran,
Ho John,
Stevenson Matthew,
Liu Guo,
Bulovic Vladimir,
Bawendi Moungi,
Kazlas Peter T.,
Steckel Jonathan,
CoeSullivan Seth
Publication year - 2015
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.10462
Subject(s) - quantum dot , luminance , optoelectronics , materials science , light emitting diode , optics , physics
We report an ultra‐bright, highly efficient, low roll‐off, inverted quantum dot‐based red light emitting device (QLED) using solution‐processed zinc oxide nanoparticles and cesium carbonate films as the electron injection and hole blocking layers, respectively. Record luminance of 165,000 Cd/m 2 has been obtained at a current density of 1000 mA/cm 2 with a low driving voltage of 5.8 V for deep red device with CIE coordinates of (0.69, 0.31).