Electrical engineers from The Australian National University (ANU) have demonstrated how to create exciton pairs in a new type of semiconductor structure, paving the way for next generation technologies required for high speed computing, information processing and data communication.The new technology has been developed by sandwiching together two sheets of bendable monolayer semiconductors and allows interlayer excitons to bind together and form pairs.An interlayer exciton is a quasiparticle made by a negatively charged electron and a positively charged "hole" that are sitting in two different layers.Interlayer excitons form when light is absorbed in a bilayer semiconductor."Interlayer exciton pairs were predicted by theory decades ago, but we are the first to observe them in experiment," lead author Professor Yuerui (Larry) Lu said.