Enhanced Stability of MAPbI3 Perovskite Films with Zirconium Phosphate‐Phosphonomethylglycine Nanosheets as Additive. Issue 24 (16th November 2021)

• Record Type: Journal Article
• Authors: Vanni, Nadir; Morelli Venturi, Diletta; Radicchi, Eros; Quaglia, Giulia; Cambiotti, Elena; Latterini, Loredana; De Angelis, Filippo; Costantino, Ferdinando
• Is Part Of: Advanced materials interfaces. Volume 8:Issue 24(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-11-16
• Subjects: composite perovskite films -- solar energy -- zirconium phosphonates; Materials science -- Periodicals; 620.11
• DOI: 10.1002/admi.202101888
• Languages: English
• ISSNs: 2196-7350

Abstract

Abstract: Methylammonium lead iodide perovskite (MAPbI3 ) is today considered the most promising component for highly efficient third generation solar cells. However, the lifetime of the solar devices is strongly affected by the stability of the MAPbI3 films toward humidity, UV irradiation, and temperature. The search for efficient protective additives to be used for building up composite perovskite films with enhanced stability is a topic of great interest in the scientific community. In the present paper, a layered zirconium phosphate‐phosphonate based on N, N ‐phosphonomethylglycine, exfoliated in thin nanosheets (NS), as additive for the stabilization of MAPbI3 crystalline films toward humidity, UV‐irradiation, and temperature changes is applied. Notably, the additive is extremely efficient in preventing degradation of the perovskite film, preserving the optical and structural properties, and avoiding the phase transitions normally observed due to temperature increase. Abstract : Layered zirconium phosphate‐phosphonomethylglycine is exfoliated in thin nanosheets and employed as additive for MAPbI3 perovskite films. Protected films show enhanced stability toward humidity and UV irradiation if compared to the crude perovskite. The presence of the additive also avoids the tetragonal to cubic phase transition normally observed in MAPbI3 crystals.