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Enhancement of optical absorption and photocurrent of by laser surface nanostructuring
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10.1063/1.2786863
/content/aip/journal/apl/91/12/10.1063/1.2786863
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/12/10.1063/1.2786863
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

SEM images of nanoscale structures in the laser scanning tracks on the surface of following irradiation at a fluence of with scanning speeds of (a) 2000, (b) 600, (c) 400, and (d) , respectively.

Image of FIG. 2.
FIG. 2.

(Color online) Corresponding relationship between the scanning speed and the number of pulses applied on unit area and their corresponding dominated structures. Inset: overview of surface morphology of laser-structured captured by a digital camera. The fluences are 3.6 and for the upper left and the lower right structured areas, respectively.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Absorption spectra before and after laser nanostructuring under increased fluence. Inset: dependence of enhanced absorption on laser fluence. (b) Spectral reflectivity before and after laser nanostructuring under increased fluence. The reflectivity of as-grown sample is 18.4%. (c) Comparison of photocurrent between unstructured and structured areas under the same illumination conditions.

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/content/aip/journal/apl/91/12/10.1063/1.2786863
2007-09-18
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhancement of optical absorption and photocurrent of 6H-SiC by laser surface nanostructuring
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/12/10.1063/1.2786863
10.1063/1.2786863
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