TY - JOUR
T1 - Transition Dipole Moments of n = 1, 2, and 3 Perovskite Quantum Wells from the Optical Stark Effect and Many-Body Perturbation Theory
AU - Proppe, Andrew H.
AU - Walters, Grant W.
AU - Alsalloum, Abdullah Yousef
AU - Zhumekenov, Ayan A.
AU - Mosconi, Edoardo
AU - Kelley, Shana O.
AU - De Angelis, Filippo
AU - Adamska, Lyudmyla
AU - Umari, Paolo
AU - Bakr, Osman
AU - Sargent, E.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This publication is based on work supported by the United States Department of the Navy, Office of Naval Research (Grant Award No.: N00014-17-1-2524). A. H. P. and G. W. W. acknowledge support from the Natural Sciences and Engineering Research Council of Canada (NSERC). E.M. and F.D.A acknowledge European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 764047 of the ESPRESSO project. The Ministero dell’Istruzione dell’Università e della Ricerca (MIUR) and Università degli Studi di Perugia are acknowledged for financial support through the program “Dipartimenti di Eccellenza 2018-2022” (Grant AMIS). L.A. and P.U. acknowledge PRACE (Project ID 20171633963) for awarding access to Marconi at CINECA, Italy.
PY - 2020/1/15
Y1 - 2020/1/15
N2 - Metal halide perovskite quantum wells (PQWs) are quantum and dielectrically confined materials exhibiting strongly bound excitons. The exciton transition dipole moment dictates absorption strength and influences interwell coupling in dipole-mediated energy transfer, a process that influences the performance of PQW optoelectronic devices. Here we use transient reflectance spectroscopy with circularly polarized laser pulses to investigate the optical Stark effect in dimensionally pure single crystals of n = 1, 2, and 3 Ruddlesden-Popper PQWs. From these measurements, we extract in-plane transition dipole moments of 11.1 (±0.4), 9.6 (±0.6) and 13.0 (±0.8) D for n = 1, 2 and 3, respectively. We corroborate our experimental results with density functional and many-body perturbation theory calculations, finding that the nature of band edge orbitals and exciton wave function delocalization depends on the PQW
AB - Metal halide perovskite quantum wells (PQWs) are quantum and dielectrically confined materials exhibiting strongly bound excitons. The exciton transition dipole moment dictates absorption strength and influences interwell coupling in dipole-mediated energy transfer, a process that influences the performance of PQW optoelectronic devices. Here we use transient reflectance spectroscopy with circularly polarized laser pulses to investigate the optical Stark effect in dimensionally pure single crystals of n = 1, 2, and 3 Ruddlesden-Popper PQWs. From these measurements, we extract in-plane transition dipole moments of 11.1 (±0.4), 9.6 (±0.6) and 13.0 (±0.8) D for n = 1, 2 and 3, respectively. We corroborate our experimental results with density functional and many-body perturbation theory calculations, finding that the nature of band edge orbitals and exciton wave function delocalization depends on the PQW
UR - http://hdl.handle.net/10754/661070
UR - https://pubs.acs.org/doi/10.1021/acs.jpclett.9b03349
UR - http://www.scopus.com/inward/record.url?scp=85079077322&partnerID=8YFLogxK
U2 - 10.1021/acs.jpclett.9b03349
DO - 10.1021/acs.jpclett.9b03349
M3 - Article
C2 - 31933373
SN - 1948-7185
VL - 11
SP - 716
EP - 723
JO - The Journal of Physical Chemistry Letters
JF - The Journal of Physical Chemistry Letters
IS - 3
ER -