Walters, Robert J. and Carreras, Josep and Feng, Tao and Bell, L. Douglas and Atwater, Harry A. (2006) Silicon Nanocrystal Field-Effect Light-Emitting Devices. IEEE Journal of Selected Topics in Quantum Electronics, 12 (6, Pt.). pp. 1647-1656. ISSN 1089-7771 http://resolver.caltech.edu/CaltechAUTHORS:WALieeejstqe06
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We describe the operation of a light-emitting device in which silicon nanocrystals are electrically pumped via the field-effect electroluminescence (EL) mechanism. In contrast to the simultaneous bipolar carrier injection used in conventional p-n junction light-emitting diodes, this device employs sequential unipolar programming of both electrons and holes across a tunneling barrier from the same semiconductor channel. Light emission is strongly correlated with the injection of second carriers into nanocrystals that have been previously programmed with charges of the opposite sign. The properties of this device are well described by the model of a charge injection through Coulomb field modified tunneling processes. We additionally consider limiting performance bounds for potential future devices fabricated from nanocrystals with different radiative emission rates.
|Additional Information:||© Copyright 2007 IEEE. Reprinted with permission. Manuscript received December 16, 2005; revised September 21, 2006. [Posted online: 2006-12-11] This work was supported in part by Intel Corporation and in part by the Air Force Office of Scientific Research under MURI Grant FA9550-04-1-0434. The authors acknowledge R. Lindstedt, M. Giorgi, and G. Bourianoff for their assistance in device design and fabrication. Invited paper. Special Issue on Photonics. IEEE Journal on Selected Topics in Quantum Electronics, vol 12, no. 6, part 2, November/December 2006.|
|Subject Keywords:||Electroluminescence, light-emitting device, silicon nanocrystals, silicon quantum dots|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||25 Jan 2007|
|Last Modified:||26 Dec 2012 09:30|
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