Transient quantum beatings of trions in hybrid organic tri-iodine perovskite single crystal

Uyen N. Huynh, Ye Liu, Ashish Chanana, Dipak R. Khanal, Peter C. Sercel, Jinsong Huang and Z. Valy Vardeny ()
Additional contact information
Uyen N. Huynh: University of Utah
Ye Liu: University of North Carolina at Chapel Hill
Ashish Chanana: University of Utah
Dipak R. Khanal: University of Utah
Peter C. Sercel: Center for Hybrid Organic Inorganic Semiconductors for Energy
Jinsong Huang: University of North Carolina at Chapel Hill
Z. Valy Vardeny: University of Utah

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: Abstract Utilizing the spin degree of freedom of photoexcitations in hybrid organic inorganic perovskites for quantum information science applications has been recently proposed and explored. However, it is still unclear whether the stable photoexcitations in these compounds correspond to excitons, free/trapped electron-hole pairs, or charged exciton complexes such as trions. Here we investigate quantum beating oscillations in the picosecond time-resolved circularly polarized photoinduced reflection of single crystal methyl-ammonium tri-iodine perovskite (MAPbI3) measured at cryogenic temperatures. We observe two quantum beating oscillations (fast and slow) whose frequencies increase linearly with B with slopes that depend on the crystal orientation with respect to the applied magnetic field. We assign the quantum beatings to positive and negative trions whose Landé g-factors are determined by those of the electron and hole, respectively, or by the carriers left behind after trion recombination. These are $${g}_{[001]}^{e}$$ g [ 001 ] e = 2.52 and $${g}_{[1\bar{1}0]}^{e}\,$$ g [ 1 1 ¯ 0 ] e = 2.63 for electrons, whereas $$\big|{g}_{[001]}^{h}\big|\,$$ g [ 001 ] h = 0.28 and $$\big|{g}_{[1\bar{1}0]}^{h}\big|\,$$ g [ 1 1 ¯ 0 ] h = 0.57 for holes. The obtained g-values are in excellent agreement with an 8-band K.P calculation for orthorhombic MAPbI3. Using the technique of resonant spin amplification of the quantum beatings we measure a relatively long spin coherence time of ~ 11 (6) nanoseconds for electrons (holes) at 4 K.

Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/s41467-022-29053-6 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29053-6

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-022-29053-6

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().