Control over emissivity of zero-static-power thermal emitters based on phase-changing material GST
作者机构：State Key Laboratory of Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China College of Information Science&Electronic EngineeringZhejiang UniversityHangzhou 310027China
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2016年第5卷第1期
页 面：313-319页
核心收录：
学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程]
基 金：supported by the National Natural Science Foundation of China(grant nos 61425023 61575177 61275030 and 61235007)
主 题：absorptivity emissivity mid-infrared switchable thermal emitters
摘 要：Controlling the emissivity of a thermal emitter has attracted growing interest,with a view toward a new generation of thermal emission *** date,all demonstrations have involved using sustained external electric or thermal consumption to maintain a desired *** the present study,we demonstrated control over the emissivity of a thermal emitter consisting of a film of phase-changing material Ge2Sb2Te5(GST)on top of a metal *** thermal emitter achieves broad wavelength-selective spectral emissivity in the *** peak emissivity approaches the ideal blackbody maximum,and a maximum extinction ratio of 410 dB is attainable by switching the GST between the crystalline and amorphous *** controlling the intermediate phases,the emissivity can be continuously *** switchable,tunable,wavelength-selective and thermally stable thermal emitter will pave the way toward the ultimate control of thermal emissivity in the field of fundamental science as well as for energy harvesting and thermal control applications,including thermophotovoltaics,light sources,infrared imaging and radiative coolers.
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