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Group III-Nitride semiconductor quantum heterostructures have revolutionized efficient visible light emitters [1]. Even though efficient nitride light emitting diodes (LEDs) and laser diodes (LDs) are now commercially mature, there as several physical effects in them that are poorly understood. Furthermore, light emitters in the UV [2] and green and longer wavelengths [3, 4] remain challenging. The...
Van der Waals (vdW) bonded heterojunctions composed of diverse two-dimensional (2D) layered materials are emerging as a novel material platform that exhibits intriguing physical phenomena and promises compelling device applications. Here we discuss the development of tunneling devices based on vdW bonded heterojunctions, specially focusing on an Esaki diode with broken gap alignment. Beyond that,...
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