Solid-state synthesis of cesium manganese halide nanocrystals in glass with bright and broad red emission for white LEDs

Abstract

Recently, lead halide perovskites nanocrystals (NCs) have attracted extensive attention due to their unique optical properties. However, the toxicity of lead and the instability to moisture obstructs their further commercial...

Investigation of optical, dielectric, and conduction mechanism in lead-free perovskite CsMnBr3

“…In this material the Mn–Br bonds are shorter than those of Cs–Br which are of the order of 2.69 (3) Å. 8,9 …”

A 0D hybrid lead-free halide with near-unity photoluminescence quantum yield toward multifunctional optoelectronic applications

“…endow hybrid metal halides with diversified structural architectures and PL properties. 24–27 Especially, the intrinsic strong quantum confinement and highly localized electrons result in large exciton bonding energy, giving rise to ultrahigh PLQY even up to near unity for 0D hybrid metal halides. The soft crystal lattice readily vibrates with photo-induced excitons as strong electron–phonon coupling, resulting in largely Stokes-shifted broadband light emission.…”

Highly efficient and stable Cs3Mn0.93Zn0.07Br5@SiO2 for wide color gamut backlight displays

“…37–44 Doping is regarded as an effective approach to improve the optical performance and long-term stability of nanocrystals (NCs). 45–51 Hao et al incorporated Zn 2+ into CsMnCl 3 , whose PLQY increased from 56.3% to 77.1%. Seven days later, the PLQY of CsMn 0.95 Zn 0.05 Cl 3 remained 51.7%.…”

“…46 In addition to polymer encapsulation, glass-encapsulated CsMnBr 3 and Cs 3 MnBr 5 were also prepared. 49,50 After encapsulation, the stability of Mn-based perovskites has been greatly improved. However, the glass encapsulation strategy requires high temperature (>1000 °C) treatment, and the PLQY is low due to the high temperatures.…”