Preparation of Highly Luminescent Nanocrystals and Their Application to Light‐Emitting Diodes

Abstract

Core/multishell-structured semiconductor nanocrystals (NCs) are prepared in multigram amounts through a one-pot process without a core-separation step (see figure and cover). The NCs show a maximum quantum efficiency of 85 % at a controlled wavelength and strong photostability against UV-light bleaching. The NCs are applied as phosphors on UV-light-emitting diodes (390 nm source), which emit light at 620 nm with a 48 % power conversion efficiency. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2089/2007/c2642_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.