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48‐3: Invited Paper : Quantum Dot Electroluminescence: Towards Achieving the REC 2020 Colour Co‐ordinates
Author(s) -
Kathirgamanathan Poopathy,
Kumaraverl Muttulingam,
Bushby Lisa M.,
Ravichandran Seenivasagam,
Bramananthan Nicola,
Surendrakumar Sivagnasundram
Publication year - 2016
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.10762
Subject(s) - electroluminescence , quantum dot , optoelectronics , quantum efficiency , quantum , materials science , set (abstract data type) , physics , computer science , nanotechnology , layer (electronics) , quantum mechanics , programming language
Colloidal quantum dots have the potential to offer saturated colours satisfying the new more demanding REC 2020 (ITU‐R‐BT 2020) standard. We report here red quantum dot based electroluminescent devices (QLEDs) that exceed the colour co‐ordinates requirement set by REC2020. We achieved colour co‐ordinates of (0.712, 0.288) that exceeds the requirement. By using appropriate device architecture and quantum dot size, we achieved a very high efficiency of 4 cd/A for CIE (x,y) of (0.708, 0.292) meeting the REC 2020 specification. A world record efficiency of 10 cd/A and 5.8 lm/W for CIE (x,y) of (0.695, 0.305) has been achieved by employing a novel hole transporter.