Oxford PV is developing and commercialising thin-film perovskite solar cells, which can be printed directly onto silicon solar cells, CIGS solar cells or glass. This will drive a paradigm shift in the aesthetics, performance and cost of both current solar panels and Building Integrated Photovoltaic (BIPV) systems.
Pioneering work developing perovskite thin-film solar cells has delivered a route to boosting the efficiency of current commercial cells; using a high efficiency coating in a multi-junction or “tandem” cell architecture. In addition, printing perovskites directly onto glass has led to a semi-transparent coating ideal for BIPV applications and, once integrated into the glazing units of a building, the technology is capable of providing a significant percentage of the building’s electrical energy requirements directly from sun light, as can be seen from our case studies.
By employing well known and well understood printing processes, focused on inexpensive and abundant raw materials, Oxford PV has developed a highly cost effective technology.
Perovskite materials have astounded the solar cell community with a steep rise in efficiency from ~4% in 2010 to a certified efficiency of 20.1% (NREL) in 2014- already surpassing many other solar technologies.
To reach this remarkable efficiency in such a short time, many iterations of the cell architecture were trialled through to the current planar thin-film devices – more akin to other thin-film technologies.