Selenide

It dissolves in aqueous solution, to give the hydrogenselenide or biselenide ion HSe−.

They sometimes have salt-like properties, e.g. sodium selenide, but most exhibit covalent bonding, e.g. molybdenum diselenide.

Copper indium selenide (CuInSe2) has attractive potential for photovoltaic devices, but these applications have not been implemented widely.

[1] Similarly, quantum dots based on metal selenides have been extensively investigated for their distinctive spectral properties.

[2] Core-shell alloys of cadmium sulfide and selenide are of interest in imaging and phototherapy.