20.2: Ultra-Bright, Highly Efficient, Low Roll-Off Inverted Quantum-Dot Light Emitting Devices (QLEDs)

20.2: Ultra-Bright, Highly Efficient, Low Roll-Off Inverted Quantum-Dot Light Emitting Devices (QLEDs)

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/m2 has...

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Veröffentlicht in:SID International Symposium Digest of technical papers 2015-06, Vol.46 (1), p.270-273
Hauptverfasser: Dong, Yajie, Caruge, Jean-Michel, Zhou, Zhaoqun, Hamilton, Charles, Popovic, Zoran, Ho, John, Stevenson, Matthew, Liu, Guo, Bulovic, Vladimir, Bawendi, Moungi, Kazlas, Peter T., Steckel, Jonathan, Coe-Sullivan, Seth
Format: Artikel
Sprache:eng
Schlagworte:
Blocking
Carbonates
Cs2CO3
Devices
Electric potential
inverted device structure
Light emitting
Light-emitting diodes
low efficiency roll off
Luminance
Nanoparticles
Quantum dot
Quantum dots
Qunatum dots
Record brightness
Voltage
zinc oxide nanoparticles
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Zusammenfassung: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/m2 has been obtained at a current density of 1000 mA/cm2 with a low driving voltage of 5.8 V for deep red device with CIE coordinates of (0.69, 0.31).
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.10462