Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3662974
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- French National Center of Scientific Research
- Region Lorraine
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Large internal gains that can be obtained in wide band gap semiconductors-based (GaN and ZnO types) Schottky and/or metal-semiconductor-metal photodetectors are generally accompanied by large dark current and time response. We show that, using quasi-alloy of BGaN/GaN superlattices as the active layer, the dark current can be lowered while maintaining high internal gain (up to 3 x 10(4)) for optical power in the nW range and low time response (few tens of ns) for optical power in the W range. Furthermore, the boron incorporation allows the tuning of the cutoff wavelength. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3662974]
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