Highly efficient green emission Cs4PbBr6 quantum dots with stable water endurance. Academic Article

abstract

• To date, quantum dots (QDs) based on perovskite materials with high photoluminescence quantum yield (PLQY) and stability have rarely been reported. In this work, Cs4PbBr6 QDs glass ceramic with high PLQY and water stability is obtained, and the research results confirm that the strong green emission originates from the trapping of free excitons by internal Br vacancies. The rise of Br vacancies and the spontaneous growth of multi-morphology Cs4PbBr6 QDs under the influence of air humidity increase the PLQY to 89.62%. Compared with pure QDs, the Cs4PbBr6 QDs maintain high-intensity luminescence after being immersed in water for up to 150 days. In short, this paper puts forward a new, to the best of our knowledge, and valuable perspective for investigating the luminescence of Cs4PbBr6 QDs glass ceramic derived from related work.

authors

• Xu, Shiqing

published proceedings

• Opt Lett

author list (cited authors)

• Guan, M., Li, P., Wu, Y., Liu, X., Xu, S., & Zhang, J.

citation count

• 4

complete list of authors

• Guan, Mingshuang||Li, Panpan||Wu, Yixi||Liu, Xiaoqing||Xu, Shiqing||Zhang, Junjie

publication date

• October 2022

publisher

• Optica Publishing Group  Publisher

published in

• Optics Letters  Journal

keywords

• 40 Engineering
• 4006 Communications Engineering
• 4009 Electronics, Sensors And Digital Hardware
• 51 Physical Sciences
• 5102 Atomic, Molecular And Optical Physics

PubMed Central ID

• 36181176

Digital Object Identifier (DOI)

• 10.1364/OL.471088

start page

• 5020

end page

• 5023

volume

• 47

issue

• 19

URL

• http://dx.doi.org/10.1364/ol.471088