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Materials 2016, 9(8), 672; doi:10.3390/ma9080672

Engineering of Semiconductor Nanocrystals for Light Emitting Applications

1
Department of Chemical Science and U.R. INSTM, University of Padova, Via Marzolo 1, Padova I-35131, Italy
2
Department of Materials Science and Engineering, Monash Energy Materials and Systems Institute (MEMSI), Monash University, 22 Alliance Lane, Room 109, Clayton 3800, Australia
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Jang-Kun Song
Received: 28 May 2016 / Revised: 18 July 2016 / Accepted: 2 August 2016 / Published: 9 August 2016
(This article belongs to the Special Issue Materials for Display Applications)
View Full-Text   |   Download PDF [12757 KB, uploaded 9 August 2016]   |  

Abstract

Semiconductor nanocrystals are rapidly spreading into the display and lighting markets. Compared with liquid crystal and organic LED displays, nanocrystalline quantum dots (QDs) provide highly saturated colors, wide color gamut, resolution, rapid response time, optical efficiency, durability and low cost. This remarkable progress has been made possible by the rapid advances in the synthesis of colloidal QDs and by the progress in understanding the intriguing new physics exhibited by these nanoparticles. In this review, we provide support to the idea that suitably engineered core/graded-shell QDs exhibit exceptionally favorable optical properties, photoluminescence and optical gain, while keeping the synthesis facile and producing QDs well suited for light emitting applications. Solid-state laser emitters can greatly profit from QDs as efficient gain materials. Progress towards fabricating low threshold, solution processed DFB lasers that are optically pumped using one- and two-photon absorption is reviewed. In the field of display technologies, the exploitation of the exceptional photoluminescence properties of QDs for LCD backlighting has already advanced to commercial levels. The next big challenge is to develop the electroluminescence properties of QD to a similar state. We present an overview of QLED devices and of the great perspectives for next generation display and lighting technologies. View Full-Text
Keywords: quantum dots; display; photoluminescence; laser emission; electroluminescence; LED quantum dots; display; photoluminescence; laser emission; electroluminescence; LED
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Todescato, F.; Fortunati, I.; Minotto, A.; Signorini, R.; Jasieniak, J.J.; Bozio, R. Engineering of Semiconductor Nanocrystals for Light Emitting Applications. Materials 2016, 9, 672.

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