Indoor Solar Perovskites Power Future

• Harness the power of the sun with innovative perovskite solar cells that offer clean, renewable energy for indoor applications.

Researchers from multiple countries have successfully developed flexible perovskite solar cells on polyethylene terephthalate (PET) films that are capable of achieving a record power conversion efficiency (PCE) of 32.5% under white LED illumination. The team achieved this impressive efficiency through a dual low-temperature approach of compositional engineering and interface modification using a molecule, i.e. tetrabutylammonium bromide (TBAB). This resulted in a 42% increase in efficiency through composition engineering and an additional 26% enhancement with the TBAB interlayer.

The team believes these flexible perovskite solar cells have potential to contribute to energy harvesting and powering indoor electronics of the future due to their excellent performance under ambient indoor conditions. PET is also a widely used, recyclable plastic that is cheap and stable to UV radiation, which makes the technology easy to integrate with other printed electronics and compatible with low-cost manufacturing.

How Did Researchers Achieve 32.5% PCE of Flexible Perovskite Solar Cells?

• The team achieved an impressive PCE of 32.5% through a dual low-temperature approach of compositional engineering and interface modification.
• The molecular interlayer, tetrabutylammonium bromide (TBAB), was used to increase the efficiency by 42%.
• A 26% enhancement was achieved with the TBAB interlayer.
• The technology is easy to integrate with other printed electronics and compatible with low-cost manufacturing due to its use of PET, a widely used, recyclable plastic that is cheap and stable to UV radiation.
• This breakthrough is believed to have potential to contribute to energy harvesting and powering indoor electronics of the future due to its excellent performance under ambient indoor conditions.