Thermal tolerance of perovskite quantum dots dependent on A-site cation and surface ligand

Shuo Wang, Qian Zhao (), Abhijit Hazarika, Simiao Li, Yue Wu, Yaxin Zhai, Xihan Chen, Joseph M. Luther and Guoran Li ()
Additional contact information
Shuo Wang: Nankai University
Qian Zhao: Nankai University
Abhijit Hazarika: CSIR-Indian Institute of Chemical Technology
Simiao Li: Nankai University
Yue Wu: Nankai University
Yaxin Zhai: National Renewable Energy Laboratory
Xihan Chen: Southern University of Science and Technology
Joseph M. Luther: National Renewable Energy Laboratory
Guoran Li: Nankai University

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract A detailed picture of temperature dependent behavior of CsxFA1-xPbI3 perovskite quantum dots across the composition range is constructed by performing in situ optical spectroscopic and structural measurements, supported by theoretical calculations that focus on the relation between A-site chemical composition and surface ligand binding. The thermal degradation mechanism depends not only on the exact chemical composition, but also on the ligand binding energy. The thermal degradation of Cs-rich perovskite quantum dots is induced by a phase transition from black γ-phase to yellow δ-phase, while FA-rich perovskite quantum dots with higher ligand binding energy directly decompose into PbI2. Quantum dot growth to form large bulk size grain is observed for all CsxFA1-xPbI3 perovskite quantum dots at elevated temperatures. In addition, FA-rich quantum dots possess stronger electron−longitudinal optical phonon coupling, suggesting that photogenerated excitons in FA-rich quantum dots have higher probability to be dissociated by phonon scattering compared to Cs-rich quantum dots.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-023-37943-6 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:14:y:2023:i:1:d:10.1038_s41467-023-37943-6

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

DOI: 10.1038/s41467-023-37943-6

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 ().