Journal
SMALL
Volume 6, Issue 15, Pages 1577-1588Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201000144
Keywords
light-emitting diodes; nanocrystals; quantum dots; solid-state lighting; white light
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Funding
- U.S. Department of Energy, Energy Efficiency and Renewable Energy, Industrial Technology Program Office
- Oak Ridge National Laboratory
- US Department of Energy [DE-AC05-00OR22725]
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In response to the demands for energy and the concerns of global warming and climate change, energy efficient and environmentally friendly solid-state lighting, such as white light-emitting diodes (WLEDs), is considered to be the most promising and suitable light source. Because of their small size, high efficiency, and long lifetime, WLEDs based on colloidal semiconductor nanocrystals (or quantum dots) are emerging as a completely new technology platform for the development of flat-panel displays and solid-state lighting, exhibiting the potential to replace the conventionally used incandescent and fluorescent lamps. This replacement can cut the ever-increasing level of energy consumption, solve the problem of rapidly depleting fossil fuel reserves, and improve the quality of the global environment. In this review, the recent progress in semiconductor-nanocrystals-based WLEDs is highlighted, the different approaches for generating while light are compared, and the benefits and challenges of the solid-state lighting technology are discussed.
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