Fig. 1: Broad-spectrum correlated two-dimensional electron gas (C-2DEG) Gas Sensor.
From: A broad-spectrum gas sensor based on correlated two-dimensional electron gas
a, A schematic of gas senor with back electrode (Pt/Ti) for back-gate. The polyhedra in the diagram are different ABO3 perovskite oxygen octahedra. The A-site atoms are omitted in the schematic diagram, and the vertex corners of the octahedron are all oxygen atoms. Different colors represent different B-site atoms in the octahedral center, from top to bottom, Al (pink), Fe (blue) and Ti (yellow). VBG and the yellow line above represent the pulsed back-gate voltage. b, Reciprocal space mapping of (103) peak of the film, indicating that the film is fully coherent with SrTiO3(STO) substrate. The inset color scale represents diffraction intensity in arbitrary units; intensity less than 14 is set as white color in order to remove background noise. c, LaAlO3 (LAO, 10-u.c.)/ LaFeO3 (LFO, 5-u.c.)/ SrTiO3 (001) heterostructures. Source data are provided as a Source Data file.
