Issue 45, 2022

A highly stable CsPbBr3–SiO2 glass ceramic film sintered on a sapphire plate for laser-driven projection displays

Abstract

Laser-driven projection technology urgently requires green emitters with a narrow bandwidth, high quantum efficiency, and long-term stability to compensate for the “green gap”. Herein, a highly stable CsPbBr3–SiO2 glass ceramic film was synthesized by co-sintering high-photostability CsPbBr3–SiO2 powder and low-melting glass frit on sapphire, where the high thermal conductivity of sapphire and the SiO2 barriers could help maintain the stability of CsPbBr3 nanocrystals (NCs), endowing the well-known CsPbBr3 material with the possibility of application in the field of laser-driven projection displays. Furthermore, a “fluorescence wheel” was fabricated by pasting the CsPbBr3–SiO2 glass ceramic film on a micro motor, which could effectively alleviate the thermal quenching and increase the laser saturation threshold. Benefiting from its elaborate design, the operating temperature of the glass ceramic film was reduced from 351 °C to 75 °C and its luminescence intensity was maintained at 86% of its initial brightness at the laser power density of 4.5 W mm−2 for 60 min. As a proof-of-concept experiment, an all-inorganic multi-color fluorescent plate with red and green light emissions was obtained by combining the K2SiF6:Mn4+ phosphor and CsPbBr3–SiO2 powder in a patterned manner on sapphire, which provides an idea for the application of CsPbBr3 NCs and K2SiF6:Mn4+ phosphor in laser projection systems.

Graphical abstract: A highly stable CsPbBr3–SiO2 glass ceramic film sintered on a sapphire plate for laser-driven projection displays

Supplementary files

Article information

Article type
Paper
Submitted
30 Sep 2022
Accepted
28 Okt 2022
First published
14 Nov 2022

J. Mater. Chem. C, 2022,10, 17109-17118

A highly stable CsPbBr3–SiO2 glass ceramic film sintered on a sapphire plate for laser-driven projection displays

J. Sun, Z. Lu, Y. Liu, D. Zheng, J. Li, L. Jin, J. Zhang, H. Zhang, Y. Liu, X. Zhang and B. Lei, J. Mater. Chem. C, 2022, 10, 17109 DOI: 10.1039/D2TC04160J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements