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The role of charge trapping at grain boundaries on charge transport in polycrystalline chemical vapor deposited diamond based detectors
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10.1063/1.2194116
/content/aip/journal/jap/99/11/10.1063/1.2194116
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/11/10.1063/1.2194116

Figures

Image of FIG. 1.
FIG. 1.

Photoluminescence data for the three films.

Image of FIG. 2.
FIG. 2.

TSC data for samples B and C. There was no peak observed for sample A.

Image of FIG. 3.
FIG. 3.

Arrhenius plots of dark conductivity for sample A (◻), sample B (▵), and sample C (◇) at an electric field of .

Image of FIG. 4.
FIG. 4.

(Left) Schematic of IBIC experiment. (Right) Scanning electron microscope image of a poly-CVD diamond sample showing the grain structure. The pale region is covered with gold to form the electrodes shown in the left diagram. The scale bar is .

Image of FIG. 5.
FIG. 5.

(Color online) Median energy IBIC maps obtained for sample A with a bias of at temperatures of (a) 70 and (b) . The scan area is , and the scale bar is . The shaded areas indicate the position of the electrodes with the anode on the left. The data plotted in panel (c) show efficiency profiles extracted from the region indicated by the horizontal dashed line in IBIC maps.

Image of FIG. 6.
FIG. 6.

(Color online) Median energy IBIC maps obtained for B with a bias of at temperatures of (a) 80 and (b) . The scan area is , and the scale bar is . The shaded areas indicate the position of the electrodes. The data plotted in panel (c) show efficiency profiles extracted from the region indicated by the horizontal dashed line in IBIC maps.

Image of FIG. 7.
FIG. 7.

(Color online) Median energy IBIC maps obtained for C for a bias of at temperatures of (a) 80 and (b) . The scan area is , and the scale bar is . The shaded areas indicate the position of the electrodes. The data plotted in panel (c) show efficiency profiles extracted from the region indicated by the horizontal dashed line in IBIC maps.

Image of FIG. 8.
FIG. 8.

(Color online) IBIC maps at from sample C with a bias of (a) (b) . The shaded areas indicate the position of the electrodes with the biasing configuration indicated. The scan area is approximately . The data plotted in panel (c) shows average efficiency profiles obtained from the IBIC maps.

Image of FIG. 9.
FIG. 9.

(Color online) (a). TCAD simulation of Electric Field profile for with (dashed line) and at intervals from (solid line). (b) Calculated efficiency for the electric field profiles with [i.e., as in (a)] and (c) experimental profiles for samples A, B, and C (from Figs. 5–7 respectively).

Image of FIG. 10.
FIG. 10.

(a) TCAD simulation of the electric field profile with electrode spacing and at 20 and , calculated for different values of applied bias. (b) Calculated efficiency for the electric field profiles with [i.e., as in (a)]. (c) Calculated efficiency for the electric field profiles with .

Image of FIG. 11.
FIG. 11.

(Color online) Experimental efficiency profiles from Fig. 8(c) (solid lines) and calculated efficiency for the electric field profiles with [i.e., as in Fig. 10(a)] for and .

Tables

Generic image for table
Table I.

Summary of sample growth parameters and characterization data.

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/content/aip/journal/jap/99/11/10.1063/1.2194116
2006-06-02
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The role of charge trapping at grain boundaries on charge transport in polycrystalline chemical vapor deposited diamond based detectors
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/11/10.1063/1.2194116
10.1063/1.2194116
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