TY - JOUR
T1 - Microcavity light-emitting devices based on colloidal semiconductor nanocrystal quantum dots
AU - Xu, Jian
AU - Cui, Dehu
AU - Lewis, Bradley A.
AU - Wang, Andrew Y.
AU - Xu, Shengyong
AU - Gerhold, Michael
N1 - Funding Information:
Manuscript received May 2, 2005; revised July 5, 2005. The work of B. A. Lewis was supported in part by a National Science Foundation Grant (DMR-0 213 623). J. Xu and D. Cui are with the Department of Engineering Science and Mechanics, Pennsylvania State University, State College, PA 16802 USA (e-mail: [email protected]). B. A. Lewis is with the Department of Chemistry, Pennsylvania State University, State College, PA 16802 USA. A. Y. Wang is with NN-Labs, Fayetteville, AR 72702-2168 USA. S. Xu is with the Department of Physics, Pennsylvania State University, State College, PA 16802 USA. M. Gerhold is with the Department of Electrical Engineering, North Carolina State University, Raleigh, NC 27695 USA. Digital Object Identifier 10.1109/LPT.2005.856398 Fig. 1. (a) Room-temperature absorption, PL, and EL of CdSe–CdS core-shell NQDs, the spectra are normalized in the plot for comparison; (b) schematic illustration of the trilayer-NQD LED structure. Inset: high resolution transmission electron microscopic image of a CdSe–CdS NQD.
PY - 2005/10
Y1 - 2005/10
N2 - This letter describes the design, fabrication, and characterization of a microcavity-electroluminescence (EL) device based on colloidal semiconductor nanocrystal quantum dots (NQDs). The device was fabricated by sandwiching a solution-cast film of light-emitting CdSe-CdS core-shell NQDs between two metal mirrors to form a resonant microcavity structure. We have observed a significant reduction in EL emission bandwidth from the fabricated device. Further improvement of the emission efficiency of the NQD-microcavity-EL devices can be achieved upon the minimization of the losses that are pertinent to metal mirrors.
AB - This letter describes the design, fabrication, and characterization of a microcavity-electroluminescence (EL) device based on colloidal semiconductor nanocrystal quantum dots (NQDs). The device was fabricated by sandwiching a solution-cast film of light-emitting CdSe-CdS core-shell NQDs between two metal mirrors to form a resonant microcavity structure. We have observed a significant reduction in EL emission bandwidth from the fabricated device. Further improvement of the emission efficiency of the NQD-microcavity-EL devices can be achieved upon the minimization of the losses that are pertinent to metal mirrors.
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U2 - 10.1109/LPT.2005.856398
DO - 10.1109/LPT.2005.856398
M3 - Article
AN - SCOPUS:26844492124
SN - 1041-1135
VL - 17
SP - 2008
EP - 2010
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 10
ER -