Photon upconversion in degenerately sulfur doped InP nanowires.
Nanoscale
; 7(48): 20503-9, 2015 Dec 28.
Article
in En
| MEDLINE
| ID: mdl-26585229
ABSTRACT
Radiative recombination in degenerately n-doped InP nanowires is studied for excitation above and below the Fermi energy of the electron gas, using photoluminescence. Laser-induced electron heating is observed, which allows absorption below the Fermi energy. We observe photon upconversion where photo-excited holes recombine with high |k| electrons. This can be attributed to hole scattering to high |k|-values, and the temperature dependence of this process is measured. We show that hole relaxation via phonon scattering can be observed in continuous wave excitation luminescence measurements.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Nanoscale
Year:
2015
Document type:
Article
Affiliation country:
Sweden