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Resistances of the Au/STON junction triggered by electric pulses with different polarities and amplitudes. Pulse width was fixed at 1 ms. Readout voltage is 0.05 V.
Photovoltage (a) and photocurrent (b) produced by light illumination for the Au/STON junction in different resistance states. The resistance ranged from to . Short arrows specify the time for the light on and light off.
Open-circuit photovoltages as functions of junction resistance. The slope of the fit line is 1.00, demonstrating the liner resistance dependence of . , directly calculated from the intercept of fit line with the -axis. Inset plot: the equivalent circuit consists of a diode in parallel with a resistor, modeling the photoelectronic processes in the junction.
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