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Light-emitting diodes with semiconductor nanocrystals |
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| Authors: | 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 |
| Institution: | 1. Photonics & Optoelectronics Group, Physics Department and Center for NanoScience (CeNS), Ludwig‐Maximilians‐Universit?t München, Amalienstrasse 54, 80799 Munich (Germany);2. Physical Chemistry, TU Dresden, Bergstrasse 66b, 01062 Dresden (Germany), Fax: (+49)?351‐463‐37164;3. Physics Department, University of Utah, Salt Lake City, Utah 84112 (USA);4. Nanotechnology Group, SIMS, Cranfield University, Beds, MK43 0AL (UK);5. Nanomanufacturing—Technologies Division, Centro Ricerche Fiat, Strada Torino 50, 10043 Orbassano (TO) (Italy);6. Tyndall National Institute, University College Cork, Lee Maltings, Cork (Ireland) |
| Abstract: | 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. |
| Keywords: | light‐emitting diodes nanocrytals nanoelectronics quantum dots semiconductors |
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