In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 10, No. 45 ( 2022), p. 17109-17118
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 CsPbBr 3 –SiO 2 glass ceramic film was synthesized by co-sintering high-photostability CsPbBr 3 –SiO 2 powder and low-melting glass frit on sapphire, where the high thermal conductivity of sapphire and the SiO 2 barriers could help maintain the stability of CsPbBr 3 nanocrystals (NCs), endowing the well-known CsPbBr 3 material with the possibility of application in the field of laser-driven projection displays. Furthermore, a “fluorescence wheel” was fabricated by pasting the CsPbBr 3 –SiO 2 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 K 2 SiF 6 :Mn 4+ phosphor and CsPbBr 3 –SiO 2 powder in a patterned manner on sapphire, which provides an idea for the application of CsPbBr 3 NCs and K 2 SiF 6 :Mn 4+ phosphor in laser projection systems.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2702245-6
detail.hit.zdb_id:
2705156-0
Permalink