Exciton hopping probed by picosecond time-resolved cathodoluminescence
نویسندگان
چکیده
Mehran Shahmohammadi, Gw! enol! e Jacopin, Xuewen Fu, Jean-Daniel Ganière, Dapeng Yu, and Benôıt Deveaud Laboratoire d’Opto! electronique Quantique, ! Ecole Polytechnique F! ed! erale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland State Key Laboratory for Mesoscopic Physics, and Electron Microscopy Laboratory, Department of Physics, 209 Chengfu Road, Peking University, Beijing 100871, China
منابع مشابه
Exciton dynamics at a single dislocation in GaN probed by picosecond time-resolved cathodoluminescence
Articles you may be interested in Exciton recombination dynamics in a-plane (Al,Ga)N/GaN quantum wells probed by picosecond photo and cathodoluminescence J. Low-temperature time-resolved cathodoluminescence study of exciton dynamics involving basal stacking faults in a-plane GaN Appl. Time-resolved cathodoluminescence and photocurrent study of the yellow band in Si-doped GaN Carrier relaxation ...
متن کاملInfluence of metal deposition on exciton-surface plasmon polariton coupling in GaAs/AlAs/GaAs core-shell nanowires studied with time-resolved cathodoluminescence.
The coupling of excitons to surface plasmon polaritons (SPPs) in Au- and Al-coated GaAs/AlAs/GaAs core-shell nanowires, possessing diameters of ~100 nm, was probed using time-resolved cathodoluminescence (CL). Excitons were generated in the metal coated nanowires by injecting a pulsed high-energy electron beam through the thin metal films. The Purcell enhancement factor (FP) was obtained by dir...
متن کاملHigh-pressure study of picosecond exciton dynamics in solid C60.
We have studied the singlet exciton decay by picosecond photoinduced absorption in films of C60, under pressures up to 62 kbar. The picosecond decay of excitons excited in the absorption tail continues to be dominated by broad distributions of lifetimes at high pressure. These results suggest that the distributions of lifetimes do not arise from variations in tunneling or hopping rates between ...
متن کاملTemperature dependence of exciton-surface plasmon polariton coupling in Ag, Au, and Al films on InxGa12xN/GaN quantum wells studied with time-resolved cathodoluminescence
in Ag, Au, and Al films on InxGa12xN/GaN quantum wells studied with time-resolved cathodoluminescence Y. Estrin, D. H. Rich, S. Keller, and S. P. DenBaars Department of Physics and The Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, P.O.B 653, Beer-Sheva 84105, Israel Electrical and Computer Engineering and Materials Departments, University of Calif...
متن کاملCathodoluminescence and photoluminescence decay behaviors of CdSe dots embedded in ZnSe
We have investigated cathodoluminescence (CL) and decay dynamics of photoexcited states in CdSe/ZnSe singlefractional monolayer structures grown by molecular beam epitaxy on a GaAs(0 0 1) substrate. CL spectra measured at 10 K by scanning the focused electron beam with a diameter of 200 nm show sharp peak structures superimposed on a broad spectrum. The observed spectra are ascribed to exciton ...
متن کامل