1. Renewable Energy Smashes Global Records in 2015, Report Shows;Neslen,2016
2. Global Renewable Power Capacity Overtakes Coal as 500,000 Solar Panels Installed Every Day;Gosden,2016
3. Renewable Energy Policy Network for the 21st Century (REN21), Renewables 2017 Global Status Report, pp. 20, 63–71.
4. Solar cell efficiency tables (version 40)
5. Perovskite solar cells: an emerging photovoltaic technology;Park;Mater. Today,2015