Bulk Mn²⁺ Doped 1D Hybrid Lead Halide Perovskite with Highly Efficient, Tunable and Stable Broadband Light Emissions

Abstract

Mn2+ doped colloidal three‐dimensional (3D) lead halide perovskite nanocrystal (PNC) has attracted intensive research attention; however, the low exciton binding energy and fatal optical instability of 3D PNC seriously hinder the optoelectronic application. Therefore, it remains significant to explore new stable host perovskite with strongly bound exciton to realize more desirable luminescent property. In this work, we utilized bulk one‐dimensional (1D) hybrid perovskite of [AEP]PbBr5 ⋅ H2O (AEP=N‐aminoethylpiperazine) as structural platform to rationally optimize the luminescent property by a controllable Mn2+ doping strategy. Significantly, the series of Mn2+‐doped 1D [AEP]PbBr5 ⋅ H2O show enhanced energy transfer efficiency from the strongly bound excitons of host material to 3d electrons of Mn2+ ions, resulting in tunable broadband light emissions from weak yellow to strong red spectral range with highest photoluminescence quantum yield up to 28.41 %. More importantly, these Mn2+‐doped 1D perovskites display ultrahigh structural and optical stabilities in humid atmosphere, water and high temperature exceeding the conventional 3D PNC. Combined highly efficient, tunable and stable broadband light emissions enable Mn2+‐doped 1D perovskite as excellent down‐converting phosphor showcasing the potential application in white light emitting diode. This work not only provides a profound understanding of low‐dimensional perovskites but also opens a new way to rationally design high‐performance broadband light emitting perovskites for solid‐state lighting and displaying devices.

Codoped 2D All-Inorganic Halide Perovskite Cs3Cd2Cl7:Sb3+:Mn2+ with Ultralong Afterglow

“…Xia utilized trap management of CsCdCl 3 :Mn 2+ :Zr 4+ crystals to realize X-ray phosphor for 3D imaging . It has been shown that it is feasible to use Sb 3+ and Mn 2+ as dopants to improve the photophysical properties of the host materials. ,− Therefore, we choose the compounds containing Cd element as the host material to develop a new afterglow crystal material by codoping Sb 3+ and Mn 2+ …”

A Red-Emitting Hybrid Manganese Halide Perovskite C5H5NOMnCl2·H2O Featuring One-Dimensional Octahedron Chains

“…Organic–inorganic hybrid metal halide (OIHMH) materials have been drawing tremendous attention due to their outstanding optical properties and gained considerable interests in the field of photoelectric devices such as photodetectors, − solar cells, − and light-emitting diodes (LEDs). − Moreover, compared to all-inorganic halide perovskites, the inorganic units were enabled with the structural confinement effect by the large organic balance cations to generate low-dimensional structures. − The one-dimensional (1D) perovskite structure means that the metal halide octahedrons are connected in a chain. Compared with high-dimensional materials, 1D materials can make exciton self-trap more easily at any phonon–exciton interaction strength, resulting in distinct optical properties such as large Stokes shift.…”

Variable halide perovskites: diversification of anti-counterfeiting applications

“…21 Likewise, Jing et al created [AEP]Pb 1− x Mn x Br 5 ·H 2 O through a cooling crystallization process and printed it on commercial paper using screen printing, which exhibited orange-red luminescence under UV-light excitation. 22 Unfortunately, anti-counterfeiting markings created with single fluorescence emission can be easily duplicated and counterfeited. Therefore, HPs with multicolor and multimodal fluorescence are one of the most promising candidates for high-security-level anti-counterfeiting applications.…”