Large bulk photovoltaic effect and second-harmonic generation in few-layer pentagonal semiconductors PdS${}_2$ and PdSe${}_2$

Vijay Kumar Gudelli, Guang-Yu Guo

Recently, atomically thin PdSe${}_2$ semiconductors with rare pentagonal Se-Pd-Se monolayers were synthesized and were also found to possess superior properties such as ultrahigh air…