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20.1: Invited Paper : Red and Green Quantum Dot Based LEDs Demonstrating Excellent Color Coordinates
Author(s) -
Kathirgamanathan Poopathy,
Bushby Lisa,
Kumaraverl Muttulingam,
Ravichandran Seenivasagam,
Surendrakumar Siva
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.10461
Subject(s) - quantum dot , light emitting diode , optoelectronics , diode , materials science , layer (electronics) , electron , red light , physics , nanotechnology , quantum mechanics , botany , biology
We report results of three light emitting diodes using quantum dot emissive layers. Two red devices were fabricated which achieved maximum current efficiencies of 1.7 (with LiQ as the electron injecting layer) and 3.4 cd/A (with ZnO as the electron injecting layer), while a green device achieved 2.4 cd/A. All devices displayed excellent color coordinates: (0.695, 0.302) and (0.697, 0.302) for the red devices and (0.118, 0.665) for the green. Lifetimes of up to 1000 hours have been obtained at 200 cdm ‐2 .