Synthesis and Electronic Transport of n-Type Ag2Te1−xSex (x = 0, 0.01, and 0.02) via Aqueous Solution Method at Room Temperature

Fei Hung Lin, Yi Hsuan Pai, Yu Hsien Chu, Chia Jyi Liu

Research output: Contribution to journalArticle

Abstract

A series of Ag2Te1−xSex/Ag nanocomposites with x = 0, 0.01, and 0.02 is fabricated using aqueous solution method at room temperature followed by sintering in an evacuated-and-encapsulated ampoule. The resulting materials are characterized by power x-ray diffraction, field-emission scanning electron microscopy, high resolution tunneling electron microscopy and thermoelectric property measurements. Slight doping of Se for Te results in higher resistivity and absolute thermopower as compared to nondoped Ag2Te/Ag nanocomposites. As a result, the power factor is significantly enhanced around structural transition temperature as well as in the temperature interval of 550 K and 650 K. A maximum power factor of 13.7 μW/cm-K2 is attained for x = 0.01 at 425 K.

Original languageEnglish
Pages (from-to)3025-3029
Number of pages5
JournalJournal of Electronic Materials
Volume46
Issue number5
DOIs
Publication statusPublished - 2017 May 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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