Tunable dual-band thermal emitter consisting of single-sized phase-changing GST nanodisks
Tunable dual-band thermal emitter consisting of single-sized phase-changing GST nanodisks
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DOI：
10.1364/oe.26.004279
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发表时间：
2018-02-19
期刊：
影响因子：
3.8
通讯作者：
Li, Qiang
中科院分区：
文献类型：
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作者：
Qu, Yurui;Cai, Lu;Li, Qiang
热发射控制在基础科学和许多应用（包括红外传感、辐射冷却和热光伏）中越来越受到关注。本文通过实验证明了一种包含相变材料 Ge2Sb2Te5 (GST) 的可调谐双波段热发射体。非晶相时两个发射峰波长分别为7.36μm和5.40μm，当GST调谐到晶相时，可以连续调谐到10.01μm和7.56μm。与其他双波段超材料发射器相比，这种可调谐双波段热发射器仅由单一尺寸的GST纳米盘阵列（在金膜上）组成，可以大大简化设计和制造过程，为动态热发射控制铺平道路。 (c) 2018 年美国光学协会根据 OSA 开放获取出版协议的条款
Thermal emission control has been attracting increased attention in both fundamental science and many applications including infrared sensing, radiative cooling and thermophotovoltaics. In this paper, a tunable dual-band thermal emitter including phasechanging material Ge2Sb2Te5 (GST) is experimentally demonstrated. Two emission peak wavelengths are at 7.36 mu m and 5.40 mu m at amorphous phase, and can be continuously tuned to 10.01 mu m and 7.56 mu m while GST is tuned to crystalline phase. Compared with other dualband metamaterial emitters, this tunable dual-band thermal emitter is only composed of an array of single-sized GST nanodisks (on a gold film), which can greatly simplify the design and manufacturing process, and pave the way towards dynamical thermal emission control. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement