TY - GEN
T1 - Auger-type hole trapping process at green emission centers of ZnO nanowires
AU - Sum, Tze Chien
AU - Li, Mingjie
AU - Xing, Guichuan
AU - Wu, Tom
PY - 2013
Y1 - 2013
N2 - The origins of the green emission (GE) from ZnO nanostructures remain highly controversial despite extensive studies. Herein, transient absorption spectroscopy (TAS) revealed a small Stokes shift of ~180 meV between the GE-centers (located at ~0.7 eV above the valence band) and the GE peak - yielding the first experimental evidence of the GE originating from charge transitions of the ZnO di-vacancies proposed recently in density functional calculations. TAS also uncovered an ultrafast Auger-type holetrapping process to ZnO V that occurs in a sub-ps timescale.
AB - The origins of the green emission (GE) from ZnO nanostructures remain highly controversial despite extensive studies. Herein, transient absorption spectroscopy (TAS) revealed a small Stokes shift of ~180 meV between the GE-centers (located at ~0.7 eV above the valence band) and the GE peak - yielding the first experimental evidence of the GE originating from charge transitions of the ZnO di-vacancies proposed recently in density functional calculations. TAS also uncovered an ultrafast Auger-type holetrapping process to ZnO V that occurs in a sub-ps timescale.
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M3 - Conference contribution
AN - SCOPUS:84887809674
SN - 9781557529725
T3 - CLEO: QELS_Fundamental Science, CLEO:QELS FS 2013
SP - QM3D.3
BT - CLEO
T2 - CLEO: QELS_Fundamental Science, CLEO:QELS FS 2013
Y2 - 9 June 2013 through 14 June 2013
ER -