Publication Date:
2009
Short description:
Exciton condensation in homoepitaxial chemical vapor deposition diamond / Donato, M.G., Messina, G., VERONA RINATI, G., Almaviva, S., Marinelli, M., Milani, E., Prestopino, G., Santangelo, S., Tripodi, P., Verona, C., Faggio, G.. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - 106:5(2009), pp. 053528-1-053528-5. [10.1063/1.3213334]
abstract:
In this work, the characteristics of the edge emission of a homoepitaxial diamond sample grown by chemical vapor deposition (CVD) are reported. Photoluminescence has been excited at 220 nm by using a tunable optical parametric oscillator laser, giving about 5 ns wide laser pulses. The temperature of the sample has been decreased from room temperature down to 30 K. Free exciton emission and its phonon replicas have been observed at all the temperatures explored. Excitonic lifetime shows a nonmonotonic dependence on the sample temperature. Luminescence at low temperatures from electron-hole drops at approximately 5.18 eV has been observed for the first time in CVD diamond.
Iris type:
1.1 Articolo in rivista
Keywords:
CVD diamond; Edge emission; Raman Spectroscopy; Photoluminescence; Exciton Condensation
List of contributors:
Donato, M. G.; Messina, Giacomo; VERONA RINATI, G.; Almaviva, S.; Marinelli, M.; Milani, E.; Prestopino, G.; Santangelo, S.; Tripodi, P.; Verona, C.; Faggio, Giuliana
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