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Hydrogen-nitrogen complexes in dilute nitride alloys: Origin of the compressive lattice strain
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) HRXRD curves of a epilayer with before (lower curve) and after (upper curve) irradiation with atomic deuterium (dose of ). The angle values are set to zero at the GaAs diffraction peak. (b) Room temperature photoluminescence spectra of the same samples shown in (a). PL normalization factors are shown in the figure.

Image of FIG. 2.
FIG. 2.

(Color online) Dependence of the relative change in the lattice constant along the growth direction in fully deuterated or hydrogenated samples, , as a function of the same quantity in untreated samples, . Circles refer to Ref. 12, triangle refers to Ref. 10, squares refer to Ref. 11, and diamonds refer to this work. The continuous line is a linear fit to the data (slope equal to ).

Image of FIG. 3.
FIG. 3.

HRXRD curves of the same deuterated epilayer shown in Fig. 1 annealed at for different time intervals . The gray curved arrow indicates the compressive strain peak. Inset: Room temperature photoluminescence spectrum of the sample at the end of the annealing treatment (solid line). The PL spectrum of the as-deuterated sample is also shown (dashed line) for comparison.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Hydrogen-nitrogen complexes in dilute nitride alloys: Origin of the compressive lattice strain