Electroluminescence from Nanoscale Materials via Field-Driven Ionization
Nano Letters2011Vol. 11(7), pp. 2927–2932
Citations Over TimeTop 10% of 2011 papers
Vanessa Wood, Matthew J. Panzer, Deniz Bozyigit, Yasuhiro Shirasaki, Ian Rousseau, Scott M. Geyer, Moungi G. Bawendi, Vladimir Bulović
Abstract
The high degree of morphological and energetic disorder inherent to many nanosized materials places limitations on charge injection into and transport rates through thin films of these materials. We demonstrate electroluminescence achieved by local generation of charge that eliminates the need for injection of charge carriers from the device electrodes. We show electroluminescence from thin films of nanoscale materials that do not support direct current excitation and suggest a mechanism for the charge generation and electroluminescence that is consistent with our time-averaged and time-resolved observations.
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