Midwave infrared InSb nBn photodetector
Midwave infrared InSb nBn photodetector
复制标题
DOI:
10.1049/el.2014.2799
复制
发表时间:
2014-09
影响因子:
1.1
通讯作者:
A. Evirgen;J. Abautret;J. P. Perez;A. Cordat;A. Nedelcu;P. Christol
中科院分区:
文献类型:
--
作者:
A. Evirgen;J. Abautret;J. P. Perez;A. Cordat;A. Nedelcu;P. Christol
The first demonstration of InSb photodetector with n B n design is reported. The n B n structure, grown by molecular beam epitaxy (MBE) on InSb substrate, is built by using n -type InSb as absorber layer and InAlSb alloy as barrier layer. The n B n detector, showing cut-off wavelength of 5.4 μm at 77 K in photovoltaic mode, exhibits dark current density as low as 10 -9 A/cm 2 at -50 mV reverse bias, at least two decades lower than usual InSb photodiode.