A novel self-powering ultrathin TEG device based on micro/nano emitter for radiative cooling

作者：Mu, Erzhen; Wu, Zhenhua; Wu, Zhimao; Chen, Xiang; Liu, Yang; Fu, Xuecheng; Hu, Zhiyu^*

来源：Nano Energy, 2019, 55: 494-500.

DOI：10.1016/j.nanoen.2018.10.057

• MEMS
• Self-power
• Thermoelectric device
• Emissivity
• Atmospheric window

This paper demonstrated a novel energy utilization that thermoelectric generation (TEG) device can achieve self-powering by radiative cooling (RC) continuously. An ultrathin TEG with a multilayer thermal emitter was fabricated to convert the heat from the environment into electricity directly by using radiative cooling. The TEG device was consisted of more than 46,000 P-N modules in series, and each two TE modules were connected by air bridge. Thermal emitter had 80.8% emissivity in the atmospheric window (8-13 mu m). Besides, maximum temperature drop of 4 K was achieved. The output voltage of the TEG-RC reached up to 0.5 mV, and the TEG-RC exhibited a continuous average 0.18 mV output for 24 h. Extreme temperature gradients were surprisingly formed in cross section of 1.5 mu m thick for micro/nano film materials.

• 出版日期2019-1
• 单位上海交通大学