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Reduced longitudinal optical phonon-exciton interaction in InGaN/GaN nanorod structures
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10.1063/1.4711210
/content/aip/journal/apl/100/18/10.1063/1.4711210
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/18/10.1063/1.4711210

Figures

Image of FIG. 1.
FIG. 1.

Typical cross-sectional SEM image of our InGaN/GaN MQW nanorod array structure.

Image of FIG. 2.
FIG. 2.

PL spectra of all the as-grown InGaN/GaN MQW samples and their corresponding nanorod array structures, measured at 10 K. In all cases, clear phonon replica peaks are observed on the low energy side, and all the nanorod samples show a clear reduction in phonon replica peak, compared to their as-grown equivalent.

Image of FIG. 3.
FIG. 3.

An example of how a multiple Gaussian function is fitted to the PL spectra of one of the InGaN/GaN MQW samples where the indium composition is around 13%.

Image of FIG. 4.
FIG. 4.

Excitation power dependant PL of the as-grown B and its corresponding nanorod B measured under identical conditions at room temperature as an example. The ratio of integrated PL intensity to excitation power is normalised, giving a comparison of quantum efficiency.

Tables

Generic image for table
Table I.

Huang-Rhys factors (S0) for all the as-grown InGaN/GaN MQW samples and their corresponding nanorod structures. FWHM values for the main PL emission peak are also provided for all samples.

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/content/aip/journal/apl/100/18/10.1063/1.4711210
2012-05-03
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Reduced longitudinal optical phonon-exciton interaction in InGaN/GaN nanorod structures
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/18/10.1063/1.4711210
10.1063/1.4711210
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