材料科学
光热治疗
热电效应
光电子学
复合数
热电发电机
吸收(声学)
光伏系统
纳米技术
镓
光热效应
太阳能
复合材料
冶金
电气工程
物理
工程类
热力学
作者
Nieves Flores,Franco Centurion,Jiewei Zheng,Mahroo Baharfar,Mohammed Kilani,Mohammad B. Ghasemian,François-Marie Allioux,Jianbo Tang,Junma Tang,Kourosh Kalantar‐zadeh,Md. Arifur Rahim
标识
DOI:10.1002/adma.202308346
摘要
The development of advanced solar energy technologies, which efficiently convert solar energy to heat and then to electricity, remains a significant challenge in the pursuit of clean energy production. Here, this challenge is addressed by designing a photothermal absorber composed of liquid gallium particles and a natural polyphenol-based coordination ink. The design of this composite takes advantage of the tuneable light absorption properties of the polyphenol inks and can also be applied onto flexible substrates. While the ink utilizes two types of coordination complexes to absorb light at different wavelengths, the liquid gallium particles with high thermal and electrical properties provide enhanced thermoelectric effect. As such, the photothermal composite exhibits a broad-spectrum light absorption and highly efficient solar-to-heat conversion. A thermoelectric generator coated with the photothermal composite exhibits an impressive voltage output of ≈185.3 mV when exposed to 1 Sun illumination, without requiring any optical concentration, which sets a new record for a power density at 345.5 µW cm-2 . This work showcases the synergistic combination of natural compound-based light-absorbing coordination complexes with liquid metals to achieve a strong photothermal effect and their integration into thermoelectric devices with powerful light harvesting capabilities.
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