Our Research
We are broadly interested in oxide quantum materials and heterostructures, with a significant focus on synthesis of novel complex oxide materials, oxide interface physics, low-dimensional superconductivity, 2D oxide nanomembranes, and quantum materials by design. We leverage a combined approach of atomic-scale fabrication, thin-film epitaxy and kinetic-based synthetic methods, with the aim to prepare novel phases of complex oxides. We specialize in growing materials by the advanced pulsed laser deposition technique and studying their physical properties by transport means.
Our work is published in Advanced Material
17 October, 2024
In this work, Mott material (vanadium dioxide)-based photothermoelectric near-infrared photodetectors are developed that exhibit electrode-dependent and tunable super-linear photoresponse (exponent α > 33) with ultralow modulation bias. These devices demonstrate an opto-thermo-electro-coupled phase transition, resulting in a large photocurrent on/off ratio (>105), high responsivity (≈500 A W−1), and well detectivity (≈3.9 × 1012 Jones), all while maintaining rapid response speeds (τr = 2 µs and τd = 5 µs) under the bias of 1 V. This work paves the way for developing near-sensor devices with potential applications in medical image preprocessing, flexible electronics, and intelligent edge sensing.
