關鍵字查詢 | 類別:期刊論文 | | 關鍵字:Low thermal conductivity and enhanced thermoelectric performance of nanostructured Al-doped ZnTe

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1 104/1 物理系 張經霖 教授 期刊論文 發佈 Low thermal conductivity and enhanced thermoelectric performance of nanostructured Al-doped ZnTe , [104-1] :Low thermal conductivity and enhanced thermoelectric performance of nanostructured Al-doped ZnTe期刊論文Low thermal conductivity and enhanced thermoelectric performance of nanostructured Al-doped ZnTeAnkam Bhaskar; Yi-Hsuan Pai; Wei-Ming Wu; Ching-Lin Chang; Chia-Jyi LiuA. Sintering;B. Electron microscopy;C. Electrical conductivity;C. Thermal conductivity;C. Thermal propertiesCeramics International 42(1B), p.1070–1076Nanostructured Zn1−xAlxTe (0≤x≤0.15) samples have been fabricated using hydrothermal synthesis and evacuating-and-encapsulating sintering. Thermoelectric properties are measured at 300–600 K. The thermopower of all the samples is positive, indicating that the predominant carriers are holes over the entire temperature range. The hole concentration increases with increasing Al3+ content. Based on the charge neutrality, the hole concentration is expected to decrease upon Al doping. However, the x-ray absorption spectroscopy indicates the electrons transfer from Zn 4s to Te 5d sta
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