The perovskite tandem solar industry is being driven by Oxford PV, which this year has received $84 million to install a 200MW silicon heterojunction solar cell line in partnership with photovoltaic equipment supplier, Meyer Burger. Other players include Saule Technologies, Physee and SolarWindow, who are key competitors within the building integrated photovoltaics market, competing to win tenders for new builds. Dye sensitized solar cells were a popular area for research in the early 2010s, with several companies aiming for commercial production including Sono-Tek, Dyesol, G24 Power, Fujikura, and Solaronix Technologies. But while scientists continue to investigate the technology, it has for the most part been eclipsed by perovskite in terms of commercial interest. However, Exeger’s $10 million and $29 million investments this year from SoftBank and AMF respectively represent one of the biggest commitments to a company looking to integrate solar into IoT and electronic devices.