An overview on enhancing the stability of lead halide perovskite quantum dots and their applications in phosphor-converted LEDs

Abstract

The limited stability of lead halide perovskite quantum dots impedes their broad applications and has received tremendous attention. The instability driven by structure, interface, etc. is summarized. Simultaneously, strategies such as compositional engineering and surface engineering towards enabling stable perovskite emitters are reviewed.

Metal halide perovskite nanocrystals and their applications in optoelectronic devices

“…Typical ABX 3 perovskite crystal structure. Reproduced with permission . Copyright 2019, The Royal Society of Chemistry…”

“…Reproduced with permission. 17 Copyright 2019, The Royal Society of Chemistry 2.2 | Optoelectronic properties of perovskite NCs…”

Highly Efficient and Stable White Light‐Emitting Diodes Using Perovskite Quantum Dot Paper

“…[6,9,10] The quantum yield of liquid phase perovskite QDs (PQDs) is typically greater than 80%, with the record high reaching 100% efficiency. [11][12][13] Additionally, most PQDs feature a full width at half maximum (FWHM) of less than 30 nm, [7,14] which is favorable for improving the color purity of displays. [15] To date, various PQD-based white LEDs have been reported using diverse structural designs that feature different advantages and disadvantages.…”

Overview of Computational Simulations in Quantum Dots

“…The core‐shell QD systems are typically composed of type II–VI, IV–VI, and III–V semiconductors such as (CdS) ZnS, (CdSe) ZnS, (CdSe) CdS and (InAs) CdSe . In recent years, an important member of the core‐shell QDs emerged, which is the perovskite solar cell . Organic‐inorganic halide perovskite material (CH 3 NH 3 PbX 3 , X=Cl, Br, I) with large optical absorption coefficient and high carrier mobility was considered the most favorable optical gain medium in the development of solar cells .…”

“…[16] In recent years, an important member of the core-shell QDs emerged, which is the perovskite solar cell. [17][18][19] Organic-inorganic halide perovskite material (CH 3 NH 3 PbX 3 , X = Cl, Br, I) with large optical absorption coefficient and high carrier mobility was considered the most favorable optical gain medium in the development of solar cells. [20] Owing to their extraordinary photoelectric properties, perovskite QDs have drawn enormous attentions in optoelectronic materials studies.…”