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145 results on '"Coe-Sullivan, Seth"'

3. Far-UVC to Red Nitride Nano-LEDs

Author

Stevenson, Matthew, primary, Laleyan, David, additional, Mi, Zetian, additional, Coe-Sullivan, Seth, additional, Liu, Xianhe, additional, Wu, Yuanpeng, additional, Malhotra, Yakshita, additional, Sun, Yi, additional, Ra, Yong-Ho, additional, and Wang, Renjie, additional

Published
2021
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14. Inorganic materials efficiently power flat-panel displays

Author

Coe-Sullivan, Seth

Subjects
Flat panel displays, Light-emitting diodes, Flat panel display, Business, Electronics and electrical industries
Abstract

How will the next generation of displays be powered? Quantum dots have a combination of performance attributes that make them the ideal lumophore for incorporation into light-emitting devices (LEDs) for [...]

Published
2007

20. 30‐3: Distinguished Paper:Sub‐Micron Full‐Color LED Pixels for Micro‐Displays and Micro‐LED Main Displays

Author

Ra, Yong-Ho, Wang, Renjie, Stevenson, Matthew, Coe-Sullivan, Seth, and Mi, Zetian

Abstract

We demonstrate a bottom‐up approach to the construction of micro‐LEDs as small as 150nm in lateral dimension. Molecular Beam Epitaxy (MBE) is used to fabricate such nanostructured LEDs from InGaN, from the blue to red regions of the spectrum, providing a single material set useful for an entire RGB display.

Published
2020
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23. 39.1: Invited Paper:Mass Production of Holographic Transparent Components for Wearable Applications

Author

Coe-Sullivan, Seth, Sanchez, Martin, Dimov, Fedor, and Russo, Juan Manuel

Abstract

Diffractive optics such as holographic optical elements (HOEs) can provide transparent and narrow band components with arbitrary incident and diffracted angles for near‐to‐eye commercial electronic products for augmented reality (AR), virtual reality (VR), and smart glass applications. In this paper, we will summarize the operational parameters and general optical geometries relevant for near‐to‐eye displays, the holographic substrates available for these applications, and their performance characteristics and ease of manufacture. We will compare the holographic substrates available in terms of fabrication, manufacturability, and end‐user performance characteristics. Luminit is currently emplacing the manufacturing capacity to serve this market, and this paper will discuss the capabilities and limitations of this unique facility.

Published
2019
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27. 20.2: Ultra-Bright, Highly Efficient, Low Roll-Off Inverted Quantum-Dot Light Emitting Devices (QLEDs)

Author

Dong, Yajie, primary, Caruge, Jean-Michel, additional, Zhou, Zhaoqun, additional, Hamilton, Charles, additional, Popovic, Zoran, additional, Ho, John, additional, Stevenson, Matthew, additional, Liu, Guo, additional, Bulovic, Vladimir, additional, Bawendi, Moungi, additional, Kazlas, Peter T., additional, Steckel, Jonathan, additional, and Coe-Sullivan, Seth, additional

Published
2015
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35. QLEDs for displays and solid-state lighting

Author

Massachusetts Institute of Technology. Department of Materials Science and Engineering, Massachusetts Institute of Technology. Microsystems Technology Laboratories, Supran, Geoffrey James Sasaji, Shirasaki, Yasuhiro, Song, Katherine Wei, Bawendi, Moungi G., Bulovic, Vladimir, Caruge, Jean-Michel, Kazlas, Peter T., Coe-Sullivan, Seth, Andrew, Trisha Lionel, Massachusetts Institute of Technology. Department of Materials Science and Engineering, Massachusetts Institute of Technology. Microsystems Technology Laboratories, Supran, Geoffrey James Sasaji, Shirasaki, Yasuhiro, Song, Katherine Wei, Bawendi, Moungi G., Bulovic, Vladimir, Caruge, Jean-Michel, Kazlas, Peter T., Coe-Sullivan, Seth, and Andrew, Trisha Lionel

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., National Science Foundation (U.S.) (Graduate Research Fellowship), United States. Dept. of Energy (Center for Excitonics, an Energy Frontier Research Center funded by the Office of Basic Energy Sciences, under Award Number DE-SC0001088)

Published
2013

43. Color-Saturated Green-Emitting QD-LEDs

Author

Steckel, Jonathan S., Snee, Preston, Coe-Sullivan, Seth, Zimmer, John R., Halpert, Jonathan Eugene, Anikeeva, Polina, Kim, Lee-Ann, Bulovic, Vladimir, Bawendi, Moungi G., Steckel, Jonathan S., Snee, Preston, Coe-Sullivan, Seth, Zimmer, John R., Halpert, Jonathan Eugene, Anikeeva, Polina, Kim, Lee-Ann, Bulovic, Vladimir, and Bawendi, Moungi G.

Abstract

Green to the core: CdxZn1-xSe alloy core nanocrystals are synthesized and overcoated with CdyZn1-yS to create core-shell nanocrystals with the ideal wavelength of emission for quantum dot light-emitting device (QD-LED) displays. These (CdxZn 1-xSe)CdyZn1-yS core-shell nanocrystals are used to fabricate color-saturated green-emitting QD-LEDs (see picture), which are suitable for display applications. (Figure Presented). © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.

Published
2006

44. Hybrid organic/quantum dot thin film structures and devices

Author

Vladimir Bulović and Terry Orlando., Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science., Coe-Sullivan, Seth (Seth Alexander), Vladimir Bulović and Terry Orlando., Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science., and Coe-Sullivan, Seth (Seth Alexander)

Abstract

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005., Includes bibliographical references (p. 157-169)., Organic light emitting diodes have undergone rapid advancement over the course of the past decade. Similarly, quantum dot synthesis has progressed to the point that room temperature highly efficient photoluminescence can be realized. It is the purpose of this work to utilize the beneficial properties of these two material sets in a robust light emitting device. New deposition techniques are necessary to the realization of this goal, enabling QD organic hybrids to be created in a quick and reliable manner compatible with known device fabrication methods. With these techniques, quantum dot light emitting devices are fabricated, measured, and analyzed. The devices are of high efficiency and color saturation, and provide us with a test bed for understanding the interactions between inorganic QDs and organic thin films., by Seth Coe-Sullivan., Ph.D.

Published
2006

45. Efficient light emitting devices utilizing CdSe(ZnS) quantum dots in organic host matrices

Author

Vladimir Bulovic., Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science., Coe-Sullivan, Seth (Seth Alexander), Vladimir Bulovic., Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science., and Coe-Sullivan, Seth (Seth Alexander)

Abstract

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002., Includes bibliographical references (leaves 29-32)., We demonstrate efficient electroluminescence from thin film structures containing core-shell CdSe(ZnS) quantum dots dispersed in molecular organic host materials. In the most efficient devices, excitons are created on the quantum dot sites via energy transfer from organic host molecules, and direct charge injection into the quantum dots is minimized. For quantum dots with core diameter 38 [Angstroms], the electroluminescence spectra peak at 562nm and have full width at half maximum as narrow as 32nm. Saturated color devices have external quantum efficiencies as high as 0.61% at the current density of 7mA/cm². At 125mA/cm², the device luminance is 1900cd/m², which corresponds to a luminescence efficiency of 1.5 cd/A. The yield over hundreds of devices is greater than 90%, indicating a robust material system., by Seth Alexander Coe., S.M.

Published
2005

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