Non-Planckian infrared emission from GaAs devices with electrons and lattice out-of-thermal-equilibrium

doi:10.1364/OE.415232

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Non-Planckian infrared emission from GaAs devices with electrons and lattice out-of-thermal-equilibrium
	Y. Zou; H. Pan; S. Huang; P. Chen; H. Yan and Z. An
刊名	Optics Express
	2021
卷号	29 期号:2 页码:1244-1250
ISSN号	10944087
DOI	10.1364/OE.415232
英文摘要	With the downscaled device size, electrons in semiconductor electronics are often electrically driven out-of-thermal-equilibrium with hosting lattices for their functionalities. The thereby electrothermal Joule heating to the lattices can be visualized directly by the noncontact infrared radiation thermometry with the hypothetic Planck distribution at a single characteristic temperature. We report here that the infrared emission spectrum from electrically biased GaAs devices deviates obviously from Planck distribution, due to the additional contribution from non-equilibrium hot electrons whose effective temperature reaches much higher than that of the lattice (Te>Tl). The evanescent infrared emission from these hot electrons is out-coupled by a near-field metamaterial grating and is hence made significant to the total far-field emission spectrum. Resonant emission peak has also been observed when the electron hotspots are managed to overlap spatially with the optical hotspots at the grating resonance. Our work opens a new direction to study nonequilibrium dynamics with (non-Planckian) infrared emission spectroscopy and provides important implications into the microscopic energy dissipation and heat management in nanoelectronics. 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/65461]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Zou,H. Pan,S. Huang,et al. Non-Planckian infrared emission from GaAs devices with electrons and lattice out-of-thermal-equilibrium[J]. Optics Express,2021,29(2):1244-1250.
APA	Y. Zou,H. Pan,S. Huang,P. Chen,&H. Yan and Z. An.(2021).Non-Planckian infrared emission from GaAs devices with electrons and lattice out-of-thermal-equilibrium.Optics Express,29(2),1244-1250.
MLA	Y. Zou,et al."Non-Planckian infrared emission from GaAs devices with electrons and lattice out-of-thermal-equilibrium".Optics Express 29.2(2021):1244-1250.