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An automated steady state photocarrier grating experiment
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10.1063/1.4803006
/content/aip/journal/rsi/84/5/10.1063/1.4803006
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/5/10.1063/1.4803006

Figures

Image of FIG. 1.
FIG. 1.

Sketch of the illumination of a semiconductor by two laser beams B and B in the SSPG experiment.

Image of FIG. 2.
FIG. 2.

Sketch of the “classical” SSPG experimental setup. For details see text.

Image of FIG. 3.
FIG. 3.

Sketch and picture of an automated SSPG experiment. For details see text.

Image of FIG. 4.
FIG. 4.

Pictures of the front of the substrate holder (left) and of the rear of it (right).

Image of FIG. 5.
FIG. 5.

Prototype of a SSPG apparatus. The 20 cm long ruler in the top left corner gives an order of magnitude of the scale of the system.

Image of FIG. 6.
FIG. 6.

Measurements of the ambipolar diffusion length on (a) hydrogenated amorphous silicon, (b) polymorphous silicon, (c) poly-crystalline silicon, and (d) SbS. Symbols are the measured values and the full lines are the fits using Eq. (3) . The diffusion length values are displayed in the figure.

Image of FIG. 7.
FIG. 7.

Sketch of the beam paths for different return mirrors (1, 4, 7, and 9). The distance between each vertical dotted line is 5 cm. The numbers in m correspond to the grating period that would be obtained with such a configuration. For more details see text.

Image of FIG. 8.
FIG. 8.

Sketch of the light paths from the beam splitter (BS) to the sample for different beams. Beam 1 is reflected once, goes through the EOM, and hits the sample perpendicularly to its surface. Beam 2 is reflected twice before reaching the moving mirror that sends it to a return mirror and eventually hits the sample with a given angle. Only two paths via return mirrors #1 and #9 are displayed to keep a clear figure.

Tables

Generic image for table
Table I.

Some parameters of the thin films studied with the automated SSPG prototype.

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/content/aip/journal/rsi/84/5/10.1063/1.4803006
2013-05-01
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: An automated steady state photocarrier grating experiment
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/5/10.1063/1.4803006
10.1063/1.4803006
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