標題: Cs0.33WO3 compound nanomaterial-incorporated thin film enhances output of thermoelectric conversion in ambient temperature environment
作者: Cheng, Chih-Yi
Chen, Guan-Lin
Hu, Po-Sheng
光電系統研究所
照明與能源光電研究所
Institute of Photonic System
Institute of Lighting and Energy Photonics
關鍵字: Cesium tungsten bronze;NIR absorption;Thermoelectric conversion;Ambient environment;Renewable energy
公開日期: 1-Jun-2018
摘要: Cs0.33WO3 nanomaterial absorbs a range of near-infrared (NIR) wavelength spanning 900-2400 nm, of which the main contributor of heat energy may be utilized for electrical generation. In this research, the capability of Cs0.33WO3 nanomaterial in enhancing the output of a thermoelectric (TE) device by trapping the absorbed heat at the hot-side surface of the device is investigated. The material is synthesized through a combination of the processes of co-precipitation and wet nano-grinding, and the characterization of its structural and optical properties was carried out using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and visible-near-infrared absorption spectroscopy. Likewise, the photothermal property of Cs0.33WO3 nanomaterial, in the form of solution or solid film, is assessed to gain better insight into its effects on the electrical output of the TE device, utilizing a laser with wavelength of 808 nm, a solar simulator, and sunlight in ambient environment. Moreover, the photoelectric property of the Cs0.33WO3 nanomaterial-incorporated TE device was evaluated in four different types of weather condition, sunny, sunny with partly cloudy, cloudy, and rainy; and our results indicate that Cs0.33WO3 nanomaterial is capable of enhancing the output of thermoelectric conversion in an ambient environment. In a complete sunny day, when compared with a bare thermoelectric device, the coating of Cs0.33WO3 nanomaterial with concentration of 0.66 wt% demonstrated a rise of 13.1% in the maximal attainable temperature and a corresponding increase of 291% in maximal output voltage.
URI: http://dx.doi.org/10.1007/s13204-018-0718-8
http://hdl.handle.net/11536/148050
ISSN: 2190-5509
DOI: 10.1007/s13204-018-0718-8
期刊: APPLIED NANOSCIENCE
Volume: 8
起始頁: 955
結束頁: 964
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