Open AccessA NEW TECHNIQUE FOR OBTAINING THE “MOBILITIES SPECTRUM” TRANSIENT THERMOELECTRIC EFFECT
Author(s) -
Gao Wen-Xiu,
Huang Mei-Chun,
Chuanhong Chen,
Yang Zu-Shen
Publication year - 1997
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.46.2223
Subject(s) - transient (computer programming) , relaxation (psychology) , thermal conduction , materials science , thermoelectric effect , diffusion , condensed matter physics , charge carrier , diffusion process , conduction band , mobilities , optoelectronics , physics , computer science , thermodynamics , electron , quantum mechanics , psychology , social psychology , social science , sociology , composite material , operating system , knowledge management , innovation diffusion
We introduced a new technique called “Transient Thermoelectric Effect (TTE)”, which was based on carrier-diffusion as irradiated by a pulsed laser. The observed TTE voltages decayed exponentially with time, showing a multi-relaxation process with characteristic relaxation times τi(i=1,2,3,…) for thermal diffusions of photo-induced conduction carriers, analyses of these results could give valuable information about carrier mobilities, effective masses and Fermi surfaces. The principle and the main analysis method were also described in detail.