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Your search keyword '"Xiuwei Fu"' showing total 4 results
Start Over Author "Xiuwei Fu" Publisher american chemical society (acs)
4 results on '"Xiuwei Fu"'

2. Thermoelectric Performance of Cr Doped and Cr–Fe Double-Doped Higher Manganese Silicides with Adjusted Carrier Concentration and Significant Electron–Phonon Interaction

Author

Xiuwei Fu, Quansheng Guo, Takao Mori, Wenhao Zhang, Sylvain Le Tonquesse, David Berthebaud, Zihang Liu, Hyoung-Won Son, Kiyoshi Shimamura, and Naoki Sato

Subjects
010302 applied physics, Materials science, Condensed matter physics, Doping, Electron phonon, chemistry.chemical_element, Cr doped, 02 engineering and technology, Manganese, 021001 nanoscience & nanotechnology, Thermoelectric materials, 01 natural sciences, chemistry, 0103 physical sciences, Thermoelectric effect, General Materials Science, Crystallite, Electron phonon scattering, 0210 nano-technology
Abstract

Polycrystalline higher manganese silicides Mn1–xCrxSi1.74 (x = 0, 0.10, 0.20) with Cr single doping and Mn1–2yCryFeySi1.74 (y = 0.10, 0.20) with Cr–Fe double doping have been prepared by arc meltin...

Published
2021
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3. Designing Large-Area Single-Crystal Perovskite Solar Cells

Author

Xiuwei Fu, Xiaomei Jiang, Zhaolai Chen, Dianxing Ju, Shuang Yang, and Xutang Tao

Subjects
Materials science, Renewable Energy, Sustainability and the Environment, business.industry, Energy Engineering and Power Technology, Halide, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Fuel Technology, Chemistry (miscellaneous), Materials Chemistry, Optoelectronics, Crystallite, 0210 nano-technology, business, Single crystal, Perovskite (structure)
Abstract

Organic-inorganic halide single-crystal perovskite solar cells (PSCs) are promising for higher efficiency and better stability, while their development lags far behind polycrystalline counterpart. ...

Published
2020
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4. Influence of Oxygen Partial Pressure during Growth on Optical and Electrical Properties of Ca3TaAl3Si2O14 Single Crystals

Author

Yuuki Kitanaka, Masaru Miyayama, Yoshitaka Matsushita, Kiyoshi Shimamura, Xiuwei Fu, Naoki Ohashi, Yuji Noguchi, and Encarnación G. Víllora

Subjects
010302 applied physics, Work (thermodynamics), Materials science, Orders of magnitude (temperature), Piezoelectric sensor, Analytical chemistry, Mineralogy, chemistry.chemical_element, 02 engineering and technology, General Chemistry, Dielectric, Partial pressure, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Piezoelectricity, Oxygen, chemistry, Electrical resistivity and conductivity, 0103 physical sciences, General Materials Science, 0210 nano-technology
Abstract

Among the langasite family, Ca3TaAl3Si2O14 (CTAS) is particularly promising for high temperature sensor applications due to its relatively high resistivity. In this work, CTAS single crystals have been grown by the Czochralski technique under various oxygen partial pressures using Ir and Pt crucibles. Colorless CTAS crystals were grown for the first time; however, the elimination of related defects did not influence the electrical properties. Furthermore, dielectric and piezoelectric properties were independent of growth conditions. Instead, the electrical resistivity was found to be remarkably higher the lower the oxygen partial pressure, reaching a value of ∼7 × 1010 Ω cm at 400 °C, which is 3 orders of magnitude higher than that of disordered LTGA. Therefore, grown CTAS crystals are promising for high temperature piezoelectric sensor applications.

Published
2016
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