Hai-Biao Guan

Symmetry-cooperative optical-field engineering for ultrabroadband bulk photovoltaic photodetection

The bulk photovoltaic effect (BPVE) enables light-to-electricity conversion without external bias, but its practical reach is constrained by the rapid collapse of photoresponse at low photon energies. Here we show that this limitation can be overcome through cross-scale symmetry cooperation between chiral tellurium nan...