This spectrum splitting solar cell, developed at the Centre for Advanced Photovoltaics at UNSW, represents a major innovation in rooftop solar cell design. In 2014 it broke the world record achieving over 40% efficiency from natural sunlight. It is a unique approach to improving rooftop solar efficiency focusing on a solar module design that can be applied to existing technology. The team is hoping to establish the design's feasibility by 2020. If successful they will look at combining cheaper silicon cells with other affordable cell technology to bring the cost of the module down.