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Laser-induced voltage effects in epitaxial Al-doped ZnO thin films on tilted sapphire have been experimentally studied at room temperature. An open-circuit lateral voltage signal with nanosecond response time was observed when the film surface was irradiated by laser pulses of 308 nm and 1064 nm, and the voltage responsivity of the signal for 308-nm irradiation is much higher than that for 1064-nm...
A heterojunction was fabricated by growing a layer of Bi2Sr2Co2Oy thin film on the 0.7 wt% Nb-doped SrTiO3 substrate. Such heterojunction showed good rectifying characteristics over a wide temperature range, and its transport mechanism under the forward bias can be attributed to a space charge limited conduction mechanism via defects near the interface of the heterojunction. Photovoltaic properties...
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