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Discovery in gallium nitride a key enabler of energy efficient electronics | Cornell Chronicle

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Gallium nitride, a semiconductor that revolutionized energy-efficient LED lighting, could also transform electronics and wireless communication, thanks to a discovery made by Cornell researchers. From left, Ph.D. student Samuel J. Bader; Debdeep Jena, professor of electrical and computer engineering and materials science and engineering; Huili Grace Xing, professor of electrical and computer engineering and materials science and engineering; David Muller, professor of applied and engineering physics; Ph.D. student Reet Chaudhuri; and postdoctoral associate Zhen Chen have discovered fast-moving positive charges in gallium nitride that could transform electronics and wireless communication. Their paper, “A Polarization-Induced 2D Hole Gas in Undoped Gallium Nitride Quantum Wells,” was published Sept. 26 in Science. Silicon has long been the king of semiconductors, but it has had a little help. The pure material is often augmented, or “doped,” with impurities like phosphorus or boron to e

Gallium nitride, a semiconductor that revolutionized energy-efficient LED lighting, could also transform electronics and wireless communication, thanks to a discovery made by Cornell researchers. Credit: Jimy Encomendero/Provided From left, Ph.D. student Samuel J. Bader; Debdeep Jena, professor of electrical and computer engineering and materials science and engineering; Huili Grace Xing, professor of electrical and computer engineering and materials science and engineering; David Muller, professor of applied and engineering physics; Ph.D. student Reet Chaudhuri; and postdoctoral associate Zhe

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