Near-unity photoluminescence quantum yield in zero-dimensional lead-free indium-based hybrid perovskites by antimony doping

Abstract

Lead-free zero-dimensional (0D) hybrid halide perovskites have recently attracted considerable attention due to their outstanding photophysical properties. Although broadband emission can be obtained in metal halide perovskites, the realization of...

Recent advances in lead-free halide perovskites: from synthesis to applications

“…Research on lead-free perovskites is also mainly concentrated in these fields. 112–121 This section focuses on the principles and performance parameters of solar cells, photodetectors, LEDs and other devices.…”

Passivation of Organic–Inorganic Hybrid Perovskite with Poly(lactic Acid) to Achieve Stable Red-Light Flexible Films

“…X-ray detectors have attracted attention because of their wide application in medical diagnosis, industrial nondestructive detection, safety inspection, space exploration, and other fields. − The traditional scintillator materials used in commercial X-ray detectors are mostly inorganic crystals, such as NaI:TI, CsI:TI, Bi 4 Ge 3 O 12 , and CdWO 4 . , However, these materials suffer from high process cost, complicated synthesis, difficulty in large-size preparation, and poor moisture resistance. , Organic–inorganic hybrid perovskites (OIHPs) have received extensive research interest due to their easy synthesis, low cost and defect density, high optical absorption coefficient and carrier mobility, good solution processability, and long carrier diffusion length. , In particular, low-dimensional OIHPs with the strong quantum confinement effect at the molecular level have unique emission characteristics, such as adjustable band gap, large Stokes shift, and high photoluminescence quantum yields in the visible spectral range. , Recently, OIHPs have displayed greater potential than traditional scintillators in X-ray applications because of their strong X-ray absorption, low X-ray detection limit, and high energy conversion efficiency. , Modern medical X-ray imaging techniques use charge-coupled devices (CCDs) to receive optical signals, and the main spectral response peaks of CCDs are in the range of 600–700 nm. As a result, the use of red light-emitting scintillators can effectively improve the quality of imaging.…”

“…8,9 In particular, lowdimensional OIHPs with the strong quantum confinement effect at the molecular level have unique emission characteristics, such as adjustable band gap, large Stokes shift, and high photoluminescence quantum yields in the visible spectral range. 10,11 Recently, OIHPs have displayed greater potential than traditional scintillators in X-ray applications because of their strong X-ray absorption, low X-ray detection limit, and high energy conversion efficiency. 12,13 Modern medical X-ray imaging techniques use charge-coupled devices (CCDs) to receive optical signals, and the main spectral response peaks of CCDs are in the range of 600−700 nm.…”

Excitation-Dependent Emission in Sb3+-Doped All-Inorganic Rare-Earth Double Perovskites for Anticounterfeiting Applications

“…Recently, lead-free perovskites, such as double perovskites and low-dimensional perovskites, have attracted great interest in realizing excitation-dependent emission due to several intrinsic advantages including high photoluminescence quantum yields (PLQYs), low-toxicity, and low-cost solution processing. − These systems possess unique soft lattices and strong quantum confinement, which endow them with broadband self-trapped exciton (STE) emission. − The existence of multiple emission centers, including STEs, ligands, and doping ions, renders them a perfect platform to achieve excitation-dependent emission. − For example, Kuang et al reported a zero-dimensional (0D) indium–antimony alloyed halide perovskite, BAPPIn 1.996 Sb 0.004 Cl 10 , which emits bright yellow light and white light with PLQYs of ca. 100 and 44% at 320 and 365 nm excitation, respectively .…”