Light-Soak Stable Semitransparent and Bifacial Perovskite Solar Cells for Single-Junction and Tandem Architectures

Light-Soak Stable Semitransparent and Bifacial Perovskite Solar Cells for Single-Junction and Tandem Architectures

Najafi M.,
Theelen, M.
Fledderus, H.
Zhang, D.
Zardetto, V.
van Aken, B.
Veenstra, S.

2022

Semitransparent perovskite solar cells (ST-PSCs) are very attractive due to their potential applications in single junctions for building-integrated photovoltaics (BIPV) and in tandem PV technology using low-bandgap bottom solar cells. Despite the high efficiency achieved, the ST-PSCs still suffer low bifaciality, which can limit their overall energy yield for application in BIPV technologies. Furthermore, the knowledge on the long-term light-soaking stability of the ST-PSC from both illumination sides is required to optimize the energy production in the long term. p−i−n ST-PSCs and semitransparent perovskite solar minimodules with comparable and high efficiencies when illuminated from either the rear or the front sides, resulting in the highest reported bifaciality factor of 97%, are demonstrated. A bifacial equivalent power output of 21.3 W m−2 is achieved for ST-PSCs under 1 sun illumination on the front side, while using a white back reflector from the rear side with 33.5% reflected albedo. However, the side of illumination has a big impact on the light-soak stability of the ST-PSCs. It is observed that the ST-PSC provides more stable output power under illumination from the rear side (n-side) of the stack.

Perovskite
Solar power generation

http://resolver.tudelft.nl/uuid:b782c1d9-7211-4066-8726-d005f472ac0e

https://doi.org/10.1002/solr.202100621

963596

John Wiley and Sons Inc

2367-198X

Solar RRL

article