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Nature 437, 327-328 (15 September 2005) | doi:10.1038/437327a; Published online 14 September 2005

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Device physics: Enlightening solutions

Klaus Meerholz1

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White-light-emitting diodes are becoming increasingly important, but what is the best way to build compact devices possessing high efficiency? Bright prospects are offered by multi-layer organic devices grown from solution.

Sources of white light are found almost everywhere — in lighting and signage generally, but increasingly as backlights in all sorts of displays, for example in laptop computers or smart phones. The development of organic light-emitting diodes (OLEDs) promises further innovation in the field: such diodes are lightweight, provide high brightness at low power, and can be fabricated on flexible substrates to form thin devices at potentially low production cost1.

  1. Klaus Meerholz is at the Institute of Physical Chemistry, University of Cologne, Luxemburgerstrasse 116, 50939 Cologne, Germany.
    Email: klaus.meerholz@uni-koeln.de

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