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Light‐Emitting Diodes with Semiconductor Nanocrystals
Author(s) -
Rogach Andrey L.,
Gaponik Nikolai,
Lupton John M.,
Bertoni Cristina,
Gallardo Diego E.,
Dunn Steve,
Li Pira Nello,
Paderi Marzia,
Repetto Piermario,
Romanov Sergei G.,
O'Dwyer Colm,
Sotomayor Torres Clivia M.,
Eychmüller Alexander
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200705109
Subject(s) - light emitting diode , nanocrystal , electroluminescence , optoelectronics , materials science , semiconductor , diode , quantum dot , nanotechnology , quantum efficiency , figure of merit , light emission , layer (electronics)
Colloidal semiconductor nanocrystals are promising luminophores for creating a new generation of electroluminescence devices. Research on semiconductor nanocrystal based light‐emitting diodes (LEDs) has made remarkable advances in just one decade: the external quantum efficiency has improved by over two orders of magnitude and highly saturated color emission is now the norm. Although the device efficiencies are still more than an order of magnitude lower than those of the purely organic LEDs there are potential advantages associated with nanocrystal‐based devices, such as a spectrally pure emission color, which will certainly merit future research. Further developments of nanocrystal‐based LEDs will be improving material stability, understanding and controlling chemical and physical phenomena at the interfaces, and optimizing charge injection and charge transport.