Lei Yan, Qi Ruijuan, Chen Miaoying, Chen Hong, Xing Chengcheng, Sui Fengrui, Gu Longyan, He Weiwei, Zhang Yange, Baba Takahiro, Baba Tetsuya, Lin Hong, Mori Takao, Koumoto Kunihito, Lin Yuan, Zheng Zhi
Key Laboratory for Micro-Nano Energy Storage and Conversion Materials of Henan Province, College of Advanced Materials and Energy, Institute of Surface Micro and Nano Materials, Xuchang University, No. 88 Bayi Road, Xuchang City, Henan, 461000, P. R. China.
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, North First Street 2, Zhongguancun, Beijing, 100190, P. R. China.
Adv Mater. 2022 Feb;34(7):e2104786. doi: 10.1002/adma.202104786. Epub 2022 Jan 2.
Aiming to overcome both the structural and commercial limitations of flexible thermoelectric power generators, an efficient room-temperature aqueous selenization reaction that can be completed in air within less than 1 min, to directly fabricate thin β-Ag Se films consisting of perfectly crystalline and large columnar grains with both in-plane randomness and out-of-plane [201] preferred orientation, is designed. A high power factor (PF) of 2590 ± 414 µW m K and a figure-of-merit (zT) of 1.2 ± 0.42 are obtained from a sample with a thickness of ≈1 µm. The maximum output power density of the best 4-leg thermoelectric generator sample reach 27.6 ± 1.95 and 124 ± 8.78 W m at room temperature with 30 and 60 K temperature differences, respectively, which may be useful in future flexible thermoelectric devices.
为了克服柔性热电发电机的结构和商业限制，设计了一种高效的室温水相硒化反应，该反应可在空气中不到1分钟内完成，以直接制备由完美结晶且具有面内无序和面外[201]择优取向的大柱状晶粒组成的β-Ag₂Se薄膜。从厚度约为1μm的样品中获得了2590±414µW m⁻¹ K⁻²的高功率因子（PF）和1.2±0.42的优值（zT）。最佳的四腿热电发电机样品在室温下，当温差分别为30K和60K时，最大输出功率密度分别达到27.6±1.95和124±8.78W m⁻²，这可能对未来的柔性热电装置有用。
