Mechanically alloyed beta-Ag2Te in thermoelectric Bi2Se0.01Te2.99

作者：Chayasombat Bralee; Henpraserttae Suparoek; Boothroyd Chris; Thanachayanont Chanchana^*

来源：Materials Letters, 2014, 116: 243-246.

DOI：10.1016/j.matlet.2013.11.048

• beta-Ag2Te
• BiSeTe
• Thermoelectric
• Microstructure
• Crystal structure

We show that the thermoelectric compound Ag0.5Bi1.5Se0.15Te2.85 can be prepared by mechanical alloying from elemental Ag, Bi, Se and Ag powers. By using complementary microstructural characterization techniques, i.e. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, scanning transmission electron microscopy and energy dispersive X-ray spectroscopy, it was possible to find the exact composition of each phase formed in the compound. The phases formed were Bi2Se0.01Te2.99 and polymorphs of AgTe including an unusual beta-Ag2Te phase.

• 出版日期2014-2-1