Polarization sensitive solar-blind detector based on a-plane AlGaN
  We report polarization-sensitive solar-blind metal-semiconductor-metal UV photodetectors based on (11-20) a-plane AlGaN. The epilayer shows anisotropic optical properties confirmed by polarization-resolved transmission and photocurrent measurements, in good agreement with band structure calculations. 
Masihhur R. Laskar, A. Arora, A. P. Shah, A. A. Rahman, M. R. Gokhale,   Arnab Bhattacharya
cond-mat.mtrl-sci