Abstract
Direct imaging of minority electron transport via the spatially resolved recombination luminescence signature has been used to determine carrier diffusion lengths in GaInP as a function of doping. Minority electron mobility values are determined by performing time resolved photoluminescence measurements of carrier lifetime on the same samples. Values at 300K vary from ∼2000 to 400cm2/Vs and decrease with increasing doping. Anisotropic diffusion lengths and strongly polarized photoluminescence are observed, resulting from lateral composition modulation along the [110] direction. We report anisotropic mobility values associated with carrier transport parallel and perpendicular to the modulation direction.
Original language | American English |
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Article number | Article No. 202116 |
Number of pages | 5 |
Journal | Applied Physics Letters |
Volume | 105 |
Issue number | 20 |
DOIs | |
State | Published - 17 Nov 2014 |
Bibliographical note
Publisher Copyright:© 2014 AIP Publishing LLC.
NREL Publication Number
- NREL/JA-5K00-63095