Exciton Diamagnetic Shifts and Magnetic Field Dependent Linewidths in Ordered and Disordered InGaP Alloys
Conference
·
OSTI ID:942072
We have measured the diamagnetic shifts and photoluminescence linewidths of excitonic transitions in ordered and disordered In0.48Ga0.52P alloys, lattice matched to GaAs, in pulsed magnetic fields at 4 and 76K. The pulsed magnetic field ranged between 0 and 50T. The variations diamagnetic shifts with magnetic field in disordered and weakly ordered samples are considerably smaller than those calculated using a free exciton model. For a given magnetic field, the value of the diamagnetic shifts are found to increase with increasing order parameter. Furthermore, for all samples, the diamagnetic shifts at 76K are larger than at 4K suggesting that the excitons are strongly localized.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC36-99GO10337
- OSTI ID:
- 942072
- Country of Publication:
- United States
- Language:
- English
Similar Records
Exciton magnetoluminescence studies in ordered and disordered In{sub 0.48}Ga{sub 0.52}P semiconductor alloys
Exciton magnetoluminescence studies in ordered and disordered In[sub 0. 48]Ga[sub 0. 52]P semiconductor alloys
Photoluminescence-linewidth-derived exciton mass for InGaAsN alloys
Conference
·
Wed Dec 30 23:00:00 EST 1992
·
OSTI ID:10121387
Exciton magnetoluminescence studies in ordered and disordered In[sub 0. 48]Ga[sub 0. 52]P semiconductor alloys
Conference
·
Tue Dec 31 23:00:00 EST 1991
·
OSTI ID:7187228
Photoluminescence-linewidth-derived exciton mass for InGaAsN alloys
Journal Article
·
Wed Jan 26 23:00:00 EST 2000
· Physical Review B
·
OSTI ID:751209