Fig. 5

I-V curves measured at the different irradiation optical power densities of the 213 nm laser beam irradiation for SBUPs based on (a) A11P2 and (b) A11P4 samples. I-T curves measured at with different bias voltages for SBUPs based on (c) A11P2 and (d) A11P4 samples. T_r and T_f of SBUPs based on (e) A11P2 and (f) A11P4 samples.