Exceptional fine structure in the photoluminescence excitation spectra of perovskites: Evidence for Rashba splitting?
Abstract
In this communication, distinctive photoluminescence excitation (PLE) spectral properties in films of methylammonium lead tribromide grown on yttrium-stabilized zirconium oxide in the presence of an ionic liquid are reported. While strongly emissive at 535 nm [Photoluminescence Quantum Efficiency (PLQE) values above 60%], the associated PLE spectrum shows an interesting series of distinct peaks, one set with an average energy separation of ∼200 meV, the other set with ∼100 meV separation. The origins of this unusual splitting are discussed, including the possibility of Rashba splitting in such perovskite films.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (6)
Maegyn A. Grubbs
Department of Chemistry and Biochemistry, Texas Christian University 1 , Fort Worth, Texas 76129,
Bong Lee
Department of Physics and Astronomy, Texas Christian University 2 , Fort Worth, Texas 76129,
Leo Ojeda-Hernandez
Department of Chemistry and Biochemistry, Texas Christian University 1 , Fort Worth, Texas 76129,
Sergei V. Dzyuba
Department of Chemistry and Biochemistry, Texas Christian University 1 , Fort Worth, Texas 76129,
Zygmunt Gryczynski
Department of Physics and Astronomy, Texas Christian University 2 , Fort Worth, Texas 76129,
Jeffery L. Coffer
Department of Chemistry and Biochemistry, Texas Christian University 1 , Fort Worth, Texas 76129,