New bifacial linker enhances adhesion in flexible solar cells

Versatile perovskite photo voltaic cells (F-PSCs) have attracted consideration for his or her potential in numerous purposes. Nevertheless, their commercialization faces challenges associated to low mechanical flexibility, which results in poor adhesion between the perovskite absorber layer and the versatile substrate.

A latest examine published in Superior Supplies presents a promising resolution to this downside with the event of a novel bifacial linker designed to stop heterointerfacial delamination in F-PSCs. This examine was performed by Prof. Yang Dong and Prof. Liu Shengzhong from the Dalian Institute of Chemical Physics (DICP) of the Chinese language Academy of Sciences (CAS).

Researchers launched a novel bifacial linker, potassium benzyl(trifluoro)borate (BnBF₃Okay), to boost the adhesion on the SnO₂/perovskite interface, which successfully addresses the delamination problem in F-PSCs.

By optimizing heterointerfacial delamination, minimizing buried defects within the perovskite, decreasing SnO₂ floor defects, and enhancing bodily contact between the perovskite and the SnO₂-coated substrate, the efficiency of the photo voltaic cells was considerably enhanced.

Additional evaluation confirmed the essential function of the bifacial linker in boosting machine efficiency. The distinctive properties of BnBF₃Okay facilitated sturdy molecular interactions and sturdy adsorption, guaranteeing glorious adhesion between the perovskite and the SnO₂ substrate.

The strengthened mechanical interface supplied a steady basis for electrical contact, permitting environment friendly cost extraction and transport, even beneath mechanical deformation of the versatile machine.

Because of the bifacial linker, an effectivity of 21.82% (licensed at 21.39%) was achieved for a versatile perovskite photo voltaic module with an space of 12.80 cm². Furthermore, the versatile modules demonstrated glorious mechanical flexibility, retaining 96.56% of their preliminary effectivity after 6,000 bending cycles, highlighting their potential for a variety of sensible purposes.

“Our examine not solely improves the mechanical stability of versatile perovskite gadgets but in addition reduces buried floor defects and optimizes power degree alignment,” stated Prof. Liu.