Non-local photocurrent in a ferroelectric semiconductor SbSI under local photoexcitation
Masao Nakamura, Hiroki Hatada, Y. Kaneko, N. Ogawa, Masato Sotome, Yoshinori Tokura, M. Kawasaki
Abstract
We have investigated the photovoltaic action in a ferroelectric semiconductor SbSI with a potentiometry for a multiterminal device under local laser irradiation. The DC-voltage characteristics indicate that the device characteristics are understood to be equivalent to a series circuit composed of dark-resistances for the unirradiated parts and the parallel circuit of a current source and photo-resistance for the irradiated part. The results clearly guide us toward designing photovoltaic and photodetective devices based on ferroelectric materials.
Topics & Concepts
PhotoexcitationPhotocurrentFerroelectricityOptoelectronicsMaterials scienceSemiconductorPhotovoltaic effectIrradiationPhotoconductivityPhotovoltaic systemLaserVoltageOpticsElectrical engineeringPhysicsExcitationDielectricNuclear physicsEngineeringSolid-state spectroscopy and crystallographySemiconductor Quantum Structures and DevicesAdvanced Research in Systems and Signal Processing