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White Light‐Emitting Diodes with Excellent Color Rendering Based on Organically Capped CdSe Quantum Dots and Sr 3 SiO 5 :Ce 3+ ,Li + Phosphors
Author(s) -
Jang Ho Seong,
Yang Heesun,
Kim Sung Wook,
Han Ji Yeon,
Lee SangGeun,
Jeon Duk Young
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200702846
Subject(s) - phosphor , light emitting diode , color rendering index , materials science , quantum dot , diode , superlattice , optoelectronics , white light , rendering (computer graphics) , luminescence , high color , photoluminescence , computer graphics (images) , computer science , image (mathematics) , artificial intelligence , color image , image processing
White LEDs are fabricated through a combination of blue LEDs with Sr 3 SiO 5 :Ce 3+ ,Li + phosphors and organically capped CdSe quantum dots (QDs), which exhibit a 2D superlattice. The combination of blue emission from the LEDs, greenish‐yellow emission from the phosphors, and red emission from the QDs generates white light. As‐synthesized white LEDs show excellent color rendering properties and stable color coordinates against increasing forward bias currents (see figure).