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Design of an all-day electrical power generator based on thermoradiative devices

Science China(Technological Sciences) 2021年第10期64卷 2166-2173页

作者： ZHang Xin Yang GuoFeng YAN MengQi ang lay kee ang Yee Sin CHEN JinCan School of Science Jiangnan UniversityWuxi 214122China Science Mathematics and TechnologySingapore University of Technology and DesignSingapore 487372Singapore Department of Physics Xiamen UniversityXiamen 361005China

Energy harvesting from sun and outer space using thermoradiative devices(TRDs),despite being promising renewable energy sources,is limited only to daytime and nighttime period,*** a system with 24-hour continuous electric power generation remains an open question thus ***,a TRD-based power generator that harvests solar energy via concentrated solar irradiation during daytime and via thermal infrared emission towards the outer space at nighttime is proposed,thus achieving the much sought-after 24-hour electrical power ***,a rigorous thermodynamical model is developed to investigate the all-day performance characteristics,parametric optimum design,and the role of various energy loss *** calculated results predict that the daytime TRD-based system yields a peak efficiency of 12.6%under 10 suns,thus sig-nificantly outperforming the state-of-art record-setting solar thermoelectric *** work reveals the potential of TRD towards 24-hour electricity generation and future renewable energy technology.

关键词： sustainable energy HgCdTe solar energy thermoradiative optimum design

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Physics of electron emission and injection in two-dimensional materials: Theory and simulation

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InfoMat 2021年第5期3卷 502-535页

作者： Yee Sin ang Liemao Cao lay kee ang Science Mathematics and Technology(SMT)Singapore University of Technology and Design(SUTD)SingaporeSingapore College of Physics and Electronic Engineering Hengyang Normal UniversityHengyangChina

Electrically contacting two-dimensional(2D)materials is an inevitable process in the fabrication of devices for both the study of fundamental nanoscale charge transport physics and the design of high-performance novel electronic and optoelectronic *** physics of electrical contact formation and interfacial charge injection critically underlies the performance,energyefficiency and the functionality of 2D-material-based devices,thus representing one of the key factors in determining whether 2D materials can be successfully implemented as a new material basis for the development of nextgeneration beyond-silicon solid-state device *** this review,the recent developments in the theory and the computational simulation of electron emission,interfacial charge injection and electrical contact formation in 2D material interfaces,heterostructures,and devices are *** on thermionic charge injection phenomena which are omnipresent in 2Dmaterials-based metal/semiconductor Schottky contacts,we summarize various transport models and scaling laws recently developed for 2D *** progress on the first-principle density functional theory simulation of 2D-material-based electrical contacts are also *** review aims to provide a crystalized summary on the physics of charge injection in the 2D Flatlands for bridging the theoretical and the experimental research communities of 2D material device physics and technology.

关键词： 2D material interfaces charge injection contact engineering heterostructures theory and simulations

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