Hsu group research focuses on fundamental science and applications in energy and optoelectronics. We employ solution synthesis for a wide variety of materials and apply short light pulses, instead of heating, for materials processing. Research projects include organic and perovskite photovoltaics, flexible electronics and solar cells, thin-film transistors for time-series encoding and physical reservoir computing, electrical and optoelectronic studies of materials and devices, inorganic materials for extreme UV resists, photonic processing of thin films, and machine learning approaches for synthesis and processing optimization.

We emphasize solution deposition and photonic processing of inorganic materials that are compatible with flexible polymer substrates and conducive to large-area, high-throughput manufacturing, and apply a wide variety of experimental techniques for materials characterization, including XRD, SEM/TEM, AFM, XPS, UV-vis absorption, ellipsometry, Kelvin probe, photoelectron spectroscopy in air (PESA), FTIR, and thermogravimetric analysis (TGA). We also perform solar cell, transistor, and capacitor device fabrication and testing. Machine Learning methods and numerical simulation methods augment experiments.