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arXiv · 0902.1208

Generation and transport of photoexcited electrons in single-crystal diamond

F. J. Heremans·G. D. Fuchs·C. F. Wang·R. Hanson·D. D. Awschalom
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Abstract

We report time-dependent photocurrent and transport measurements of sub-bandgap photoexcited carriers in nitrogen-rich (type Ib), single-crystal diamond. Transient carrier dynamics are characteristic of trapping conduction with long charge storage lifetimes of ~3 hours. By measuring the photoexcited Hall effect we confirm that the charge carriers are electrons and by varying the excitation energy we observe a strong turn-on in the photoconduction at ~1.9 eV. These findings shed new light on sub-bandgap states in nitrogen doped single-crystal diamond.

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F. J. Heremans, G. D. Fuchs, C. F. Wang, R. Hanson, D. D. Awschalom. 2009-02-07. Generation and transport of photoexcited electrons in single-crystal diamond. https://doi.org/10.1063/1.3120225

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