Flexible perovskite solar cells: green, roll-to-roll fabrication
This review presents recent developments in the continuous roll-to-roll printing of perovskite solar cells. As the power conversion efficiency of the perovskite solar cells has been skyrocketed to as high as over 23%, it may become a disruptive technology in the photovoltaics. It reviews commercially available flexible substrates, perovskite solar cells and fabrication processes. In particular, it provides a perspective on low cost solution printing for large-scale high throughput production with a focus on green processing.