Recombination in tensile-strained In0.3Ga0.7As quantum well on InP

S. Kalem*, Hao-Chung Kuo, A. Curtis, G. Stillman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Photoluminescence (PL) measurements under different excitation powers were carried out at low temperature on tensile-strained In0.3Ga0.7As single wells of 6 nm with InGaAs barriers lattice matched to InP substrate. PL measurements taken at 2 K show a main emission band at 0.762 eV probably originating from a type-II transition. The insertion of an ultrathin InAs layer at In0.3Ga0.7As on In0.53Ga0.47As interface reveals an additional feature at 0.711 eV as well as an excited-state luminescence emission at high pump powers. The InAs insertion improves heterointerface quality, which was confirmed by an increase in PL intensity.

Original languageEnglish
Pages (from-to)153-155
Number of pages3
JournalApplied Physics A: Materials Science and Processing
Issue number2
StatePublished - 1 Aug 2000

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