Photovoltaic roll-to-roll energy storage

What is a roll-to-roll (R2R) processed photovoltaic (PV) module?

The objective of the project is to demonstrate roll-to-roll (R2R) processed photovoltaic (PV) module with a target power conversion efficiency of 20% at a target area of 900 cm2. This will overcome the efficiency gap between lab-scale and fab-scale processed devices.

How does power roll work?

Power Roll has a novel back-contact technique that coats perovskite material on a flexible, lightweight PET substrate, which is embossed with tiny channels or micro-grooves, with a width of less than 2 μm. “We have developed the technology to include over 300 grooves connected in series, demonstrating power conversion efficiencies of over 12%.

Can Flexible encapsulation improve stability of organic photovoltaic (OPV) module?

The manufacture of ambient roll-to-roll (R2R) slot-die-coated organic photovoltaic (OPV) is the basis toward commercialization of OPV. The low-cost large-area encapsulation technique of stability improvement of flexible OPV module is under-investigated. The related reports on flexible encapsulation up-scaled from cell were limited.

Are solution-processed polymer and organic photovoltaics a potential Next-Generation PV?

The solution-processed polymer and organic photovoltaics (OPV) as potential next-generation PV have attracted much attention. The recent development in power conversion efficiency (PCE) of the laboratory-scale single-junction OPV cell demonstrates a rapid progress, exceeding 15% (Cui et al., 2019).

Why is ambient roll-to-roll (R2R) coating important for OPV?

Furthermore, the mass production lines using ambient roll-to-roll (R2R) coating on flexible PET substrate and low-cost materials enables significant cost reduction for OPV module compared to the other PV technologies (Angmo et al., 2014), being a critical factor toward commercialization of OPV.

How efficient are back-contact perovskite solar cells?

Indeed, according to “ Back-Contact Perovskite Solar Cell Modules Fabricated via Roll-to-Roll Slot-Die Coating: Scale-Up toward Manufacturing,” published in ACS Applied Energy Materials, the devices had 1.5 μm-width U-shaped grooves this time, and 362 of them were serially connected. Their efficiency was 12.8% after 7 minutes of testing.