Enhancement of Electroluminescent Properties in Ethanol Dispersible Nanocrystalline Silicon Particles

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Abstract:

We have fabricated two kinds of electroluminescent (EL) devices of which the luminous layer differs in order to improve an amount of injected carriers into the nanocrystalline silicon (nc-Si) particles. These EL devices showed red luminescence by the injection of carriers into the nc-Si particles after applying the direct current voltage. A large amount of carriers could be injected in the EL device prepared by the adhesion of ethanol dispersible nc-Si particles onto the dimples of Si substrate. The increase in the amount of injected carriers led to the enhancement of luminescent intensity. These results were achieved by the reduction of oxide layer surrounding nc-Si particles and the use of nc-Si particles without the nonradiative recombination centers (Pb centers).

Keywords: ELECTRICAL PROPERTY; ELECTROLUMINESCENCE; NANOCRYSTALLINE SILICON PARTICLES; OPTICAL DEVICE; SPUTTERING

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2008.009

Publication date: January 1, 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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