Bright circularly polarized photoluminescence in chiral layered hybrid lead-halide perovskites - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Science Advances Année : 2023

Bright circularly polarized photoluminescence in chiral layered hybrid lead-halide perovskites

Shangpu Liu
Stanislav Bodnar
  • Fonction : Auteur
Sascha Feldmann
Markus Heindl
Natalie Fehn
  • Fonction : Auteur
Jonathan Zerhoch
Andrii Shcherbakov
  • Fonction : Auteur
Ian Sharp
Claudine Katan

Résumé

Hybrid perovskite semiconductor materials are predicted to lock chirality into place and encode asymmetry into their electronic states, while softness of their crystal lattice accommodates lattice strain to maintain high crystal quality with low defect densities, necessary for high luminescence yields. We report photoluminescence quantum efficiencies as high as 39% and degrees of circularly polarized photoluminescence of up to 52%, at room temperature, in the chiral layered hybrid lead-halide perovskites (R/S/Rac)-3BrMBA 2 PbI 4 [3BrMBA = 1-(3-bromphenyl)-ethylamine]. Using transient chiroptical spectroscopy, we explain the excellent photoluminescence yields from suppression of nonradiative loss channels and high rates of radiative recombination. We further find that photoexcitations show polarization lifetimes that exceed the time scales of radiative decays, which rationalize the high degrees of polarized luminescence. Our findings pave the way toward high-performance solution-processed photonic systems for chiroptical applications and chiral-spintronic logic at room temperature.
Fichier principal
Vignette du fichier
sciadv.adv2023_Chiral_Deschler.pdf (1.14 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Licence

Dates et versions

hal-04196405 , version 1 (05-09-2023)

Licence

Identifiants

Citer

Shangpu Liu, Mikaël Kepenekian, Stanislav Bodnar, Sascha Feldmann, Markus Heindl, et al.. Bright circularly polarized photoluminescence in chiral layered hybrid lead-halide perovskites. Science Advances , 2023, 9 (35), pp.eadh2255. ⟨10.1126/sciadv.adh5083⟩. ⟨hal-04196405⟩
43 Consultations
30 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More