Chinese Optics Letters, 2016, 14 (1): 013101, Published Online: Aug. 6, 2018
Near-infrared lateral photovoltaic effect of epitaxial LaTiO3+δ films under high pressure
Abstract
A lateral photovoltaic effect (LPE) is discovered in an LaTiO 3 + δ film epitaxially grown on a (100) SrTiO 3 substrate. Under the illumination of a continuous 808 nm laser beam that is focused on the LaTiO 3 + δ film through the SrTiO 3 substrate, the open-circuit photovoltage depends linearly on the illuminated position. The sensitivity of the LPE can be modified by the bias current. The LaTiO 3 + δ film shows a stable photoelectric property under the high pressure, up to 9 MPa. These results indicate that the LaTiO 3 + δ films can give rise to a potentially photoelectronic device for near-infrared position-sensitive detection in high-pressure environments.
Jianfeng Xi, Kun Zhao, Hao Ni, Wenfeng Xiang, Lizhi Xiao. Near-infrared lateral photovoltaic effect of epitaxial LaTiO3+