Indium(III) telluride (In<sub>2</sub>Te<sub>3</sub>) is an inorganic compound. A black solid, it is sometimes described as an intermetallic compound, because it has properties that are metal-like and salt like. It is a semiconductor that has attracted occasional interest for its thermoelectric and photovoltaic applications, similar to Silicon. No applications have been implemented commercially however.
A conventional route entails heating the elements in a seal-tube:
Indium(III) telluride reacts with strong acids to produce hydrogen telluride.