Effect of chirality on the optical properties of layered hybrid perovskite R- and S-α-methylbenzylammonium lead iodide. Issue 55 (20th June 2022)

• Record Type: Journal Article
• Authors: Sheikh, Tariq; Maqbool, Shabnum; Rajput, Parikshit Kumar; Mandal, Pankaj; Nag, Angshuman
• Is Part Of: Chemical communications. Volume 58:Issue 55(2022)
• Page Start: 7650
• Page End: 7653
• Publication Date: 2022-06-20
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d2cc01811j
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Chirality induces excitonic splitting in R - and S -α-methylbenzylammonium lead iodide at lower temperatures (below 150 K). Abstract : The introduction of chirality in layered hybrid perovskites breaks the symmetry of their inorganic sub-lattices. Consequently, they show intriguing linear and non-linear optical properties. Here we explore the effect of chirality on the excitonic photoluminescence of chiral ( R - and S -α-MBA)2 PbI4 (MBA: methylbenzylammonium) at cryogenic temperatures. The induced chirality splits the excitonic emissions below 150 K. Additionally, ( R - and S -α-MBA)2 PbI4 show wavelength-tunable second harmonic generation (SHG) that depends strongly on the polarization angle of the incident light.