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Enhancement of thermoelectric figure-of-merit by resonant states of aluminium doping in lead selenide

  • Qinyong Zhang
  • , Hui Wang
  • , Weishu Liu
  • , Hengzhi Wang
  • , Bo Yu
  • , Qian Zhang
  • , Zhiting Tian
  • , George Ni
  • , Sangyeop Lee
  • , Keivan Esfarjani
  • , Gang Chen*
  • , Zhifeng Ren
  • *Corresponding author for this work
  • Xihua University
  • Boston College
  • Massachusetts Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

By adding aluminium (Al) into lead selenide (PbSe), we successfully prepared n-type PbSe thermoelectric materials with a figure-of-merit (ZT) of 1.3 at 850 K. Such a high ZT is achieved by a combination of high Seebeck coefficient caused by very possibly the resonant states in the conduction band created by Al dopant and low thermal conductivity from nanosized phonon scattering centers.

Original languageEnglish
Pages (from-to)5246-5251
Number of pages6
JournalEnergy and Environmental Science
Volume5
Issue number1
DOIs
StatePublished - Jan 2012
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

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