Staggered-lineup heterojunctions as sources of tunable below-gap radiation: Experimental verification
- 15 November 1984
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 45 (10) , 1123-1125
- https://doi.org/10.1063/1.95040
Abstract
We report experimental verification of the prediction of widely bias‐tunable below‐gap luminescence, from lattice‐matched (p) (Al,In)As/ (n) InP heterojunctions, a system that has been predicted to have staggered lineup. The diodes, grown by molecular beam epitaxy, exhibit strong luminescence at 1.4 K, with a peak energy that shifts from 0.97 to 1.04 eV as the (pulsed) current density is increased from 4.5 to 40 A/cm2. Nonshifting injection luminescence at 1.4 eV, due to hole injection into the n‐InP substrate, was also present, but appreciably weaker (<25%) than the interface luminescence. The spectra indicate that the band lineup in the (Al,In)As/InP system is indeed staggered, with a residual gap at the interface close to 0.96 eV. The corresponding conduction and valence‐band offsets are 0.52 and 0.40 eV.Keywords
This publication has 8 references indexed in Scilit:
- Barrier control and measurements: Abrupt semiconductor heterojunctionsJournal of Vacuum Science & Technology B, 1984
- Direct energy gap of Al1−xInxAs lattice matched to InPApplied Physics Letters, 1984
- Staggered-lineup heterojunctions as sources of tunable below-gap radiation: Operating principle and semiconductor selectionIEEE Electron Device Letters, 1983
- Tunable electroluminescence from GaAs doping superlatticesApplied Physics Letters, 1982
- Molecular-beam epitaxial growth of uniform Ga0.47In0.53As with a rotating sample holderApplied Physics Letters, 1981
- GaInAs-AlInAs structures grown by molecular beam epitaxyJournal of Applied Physics, 1981
- Growth of extremely uniform layers by rotating substrate holder with molecular beam epitaxy for applications to electro-optic and microwave devicesApplied Physics Letters, 1981
- Elementary theory of heterojunctionsJournal of Vacuum Science and Technology, 1977