D. Patel et al., IDENTIFICATION OF THE L-BAND IN INXGA1-XP IN0.5AL0.5P MULTIPLE-QUANTUM WELLS FROM HIGH-PRESSURE MEASUREMENT/, Physica status solidi. b, Basic research, 198(1), 1996, pp. 337-341
High pressure photoluminescence measurements used to study the band st
ructure of the InxGa1-xP/In0.5Al0.5P (x less than or equal to 0.48) mu
ltiple quantum wells revealed that in narrow-lattice-matched and highl
y tensile strain structures the L(1c) band is the lowest conduction ba
ndstate. The L(1c) minimum was identified as it shifted with pressure
at a rate of (60 +/- 5) meV/GPa, considerably smaller than that of the
direct gap Gamma(1c) states.