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Published online by Cambridge University Press: 01 February 2011
The development of novel devices for optical communication and integrated sensor applications is mainly focused on their possible integration into dedicated integrated circuits. The main problem concerning integrated optical systems in silicon technology has always been the realization of a highly efficient silicon-based light emitter which is a key requirement to make a real step into the world of integrated optoelectronics.
One of the most promising approaches to form such a silicon based light emitter is ion beam processing. In this paper we will report on recent results regarding blue-violet (∼400 nm) and infrared (∼1100 nm) electroluminescence (EL) from ion beam synthesized Ge-rich silicon dioxide layer and Boron-implanted pn-junctions in silicon showing remarkable power efficiencies of 0.5 and 0.12%, respectively. The main effort is devoted to the achievement of a deeper insight into the mechanism of the EL.