Open AccessRegulating Te Vacancies through Dopant Balancing via Excess Ag Enables Rebounding Power Factor and High Thermoelectric Performance in p‐Type PbTe (Adv. Sci. 20/2021)
Author(s) -
Jang Hanhwi,
Park Jong Ho,
Lee Ho Seong,
Ryu Byungki,
Park SuDong,
Ju HyeonAh,
Yang SangHyeok,
Kim YoungMin,
Nam Woo Hyun,
Wang Heng,
Male James,
Snyder Gerald Jeffrey,
Kim Minjoon,
Jung Yeon Sik,
Oh MinWook
Publication year - 2021
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202170130
Subject(s) - dopant , vacancy defect , doping , materials science , thermoelectric effect , scavenger , power factor , chemical engineering , power (physics) , nanotechnology , chemistry , optoelectronics , crystallography , thermodynamics , physics , organic chemistry , engineering , radical
Defect Engineering In article number 2100895, Yeon Sik Jung, Min‐Wook Oh, and co‐workers demonstrate the underlying defect chemistry on the rebounding power factor of an Na and Ag co‐doped PbTe. Excess Ag doping is proven to be effective to be the Te vacancy scavenger by forming interstitial Ag clusters, which is confirmed by advanced STEM and in situ characterizations.