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QLEDs for displays and solid-state lighting

Author(s)
Supran, Geoffrey James Sasaji; Shirasaki, Yasuhiro; Song, Katherine Wei; Caruge, Jean-Michel; Kazlas, Peter T.; Coe-Sullivan, Seth; Andrew, Trisha Lionel; Bawendi, Moungi G.; Bulovic, Vladimir; ... Show more Show less
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Abstract
The mainstream commercialization of colloidal quantum dots (QDs) for light-emitting applications has begun: Sony televisions emitting QD-enhanced colors are now on sale. The bright and uniquely size-tunable colors of solution-processable semiconducting QDs highlight the potential of electroluminescent QD light-emitting devices (QLEDs) for use in energy-efficient, high-color-quality thin-film display and solid-state lighting applications. Indeed, this year’s report of record-efficiency electrically driven QLEDs rivaling the most efficient molecular organic LEDs, together with the emergence of full-color QLED displays, foreshadow QD technologies that will transcend the optically excited QD-enhanced products already available. In this article, we discuss the key advantages of using QDs as luminophores in LEDs and outline the 19-year evolution of four types of QLEDs that have seen efficiencies rise from less than 0.01% to 18%. With an emphasis on the latest advances, we identify the key scientific and technological challenges facing the commercialization of QLEDs. A quantitative analysis, based on published small-scale synthetic procedures, allows us to estimate the material costs of QDs typical in light-emitting applications when produced in large quantities and to assess their commercial viability.
Date issued
2013-09
URI
http://hdl.handle.net/1721.1/81887
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Microsystems Technology Laboratories
Journal
MRS Bulletin
Publisher
Cambridge University Press (Materials Research Society)
Citation
Supran, Geoffrey J., Yasuhiro Shirasaki, Katherine W. Song, Jean-Michel Caruge, Peter T. Kazlas, Seth Coe-Sullivan, Trisha L. Andrew, Moungi G. Bawendi, and Vladimir Bulović. “QLEDs for displays and solid-state lighting.” MRS Bulletin 38, no. 09 (September 12, 2013): 703-711. © 2013 Materials Research Society.
Version: Final published version
ISSN
0883-7694
1938-1425

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