S

Steven J.

2 records found

Authored

Opto-Electrical Properties of Group IV Alloys

The Inherent Challenges of Processing Hydrogenated Germanium

In this paper the opto-electrical nature of hydrogenated group IV alloys with optical bandgap energies ranging from 1.0 eV up to 2.3 eV are studied. The fundamental physical principles that determine the relation between the bandgap and the structural characteristics such as m ...

An expedient semi-empirical modelling approach for optimal bandgap profiling of stoichiometric absorbers

A case study of thin film amorphous silicon germanium for use in multijunction photovoltaic devices

Bandgap energy profiling is applied in a variety of materials for photovoltaic technologies, such as chalcogenides, III–V materials and perovskites. Bandgap profiling of the absorber layer is used to fight the fundamental loss mechanisms imposed by the bandgap energy of the ab ...