banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Exciton localization in AlGaN alloys
Rent this article for
View: Figures


Image of FIG. 1.
FIG. 1.

PL spectra of alloy measured from .

Image of FIG. 2.
FIG. 2.

The temperature dependence of the excitonic emission peak energy between 10 and for different . The solid lines are the least-squares fit of the data with the Varshni equation, Eq. (1). Deviations from Eq. (1) at the lowest measurement temperatures are the measures of the exciton localization energies, .

Image of FIG. 3.
FIG. 3.

Variations of the (a) exciton localization energy , (b) thermal activation energy , and (c) full width at half maximum of the PL emission line with Al content in alloys. , , and all increase with for , decrease with for , and have a maximum at . [The solid curve in (c) is a calculation result of Eq. (3)].

Image of FIG. 4.
FIG. 4.

(a) Exciton localization energy as a function of the thermal activation energy of the localized exciton in AlGaN alloys. Solid line is a linear fit with a slope of 1. (b) Measured full width at half maximum of the localized exciton emission line as a function of in AlGaN alloys. Solid line is a linear fit with a slope of 0.4.


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Exciton localization in AlGaN alloys