Abstract
Boron doped diamond layers have been grown on (110) single crystal diamond substrates with B/C ratios up to 20ppm in the gas phase. The surface of the diamond layers observed by scanning electron microscopy consists of (100) and (113) micro-facets. Fourier Transform Photocurrent Spectroscopy indicates substitutional boron incorporation. Electrical properties were measured using Hall effect from 150 to 1000K. Secondary ion mass spectrometry analyses are consistent with the high incorporation of boron determined by electrical measurements. A maximum mobility of 528cm2V−1s−1 was measured at room temperature for a charge carrier concentration of 1.1 1013cm−3. Finally, properties of boron doped (110) diamond layers are compared with layers on (100) and (111) orientated substrates.
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