• Green, Martin
• Gao, Mei
• Egan, Renate
• Chang, Nathan
• Baillie, Anita-Ho

Abstract

Perovskite photovoltaic solar cells and modules can be manufactured using roll-to-roll (R2R) techniques, which have the potential for very low cost production. During this early development phase of R2R perovskite processing, it is important to understand the cost barriers and drivers that will impact its future commercial viability in order to guide research directions. Because the processes, materials and equipment for manufacturing are still under development, it is difficult to estimate these costs accurately. We have used a cost method that allows for uncertainty in the input assumptions to analyse three demonstrated R2R compatible manufacturing sequences and two potential optimised sequences. We have identified and quantified some key cost barriers present in the demonstrated sequences - high cost materials P3HT and PCBM, the use of evaporation for the rear metal deposition, and the ITO coating used as the front transparent conductor. We have identified some Geometric Fill Factor and Power Conversion Efficiency targets that would allow R2R perovskite modules to compete with existing flexible PV products in the market on a dollar per watt and power to weight basis. We also identify some important technical objectives for bringing this technology to commercialisation - high efficiency and lifetime modules scaled up to large area interconnected cells, with low cost encapsulation, rear metallisation and front transparent conducting layers.

Topics

• Deposition
• perovskite
• impedance spectroscopy
• phase
• evaporation
• power conversion efficiency