Organic–Inorganic Copper Halide Compound with a Near-Unity Emission : Large-Scale Synthesis and Diverse Light-Emitting Applications

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Kunlin Chen
  • Bingkun Chen
  • Lingling Xie
  • Xitao Li
  • Xiyao Chen
  • Ning Lv
  • Kun Zheng
  • Zhe Liu
  • Huihui Pi
  • Zhengguo Lin

Detail(s)

Original languageEnglish
Article number2310561
Journal / PublicationAdvanced Functional Materials
Volume34
Issue number10
Online published21 Nov 2023
Publication statusPublished - 4 Mar 2024

Abstract

Low-dimensional organic–inorganic metal halides (OIMHs) have emerged as promising light emitters due to their broadband emission originating from self-trapped excitons (STE), especially for Cu-based OIMHs. Herein, Cu(I)-based OIMH with a structure of (TPP)2Cu4I6·2DMSO (TPP stays for tetraphenylphosphonium, and DMSO – for dimethyl sulfoxide) has been synthesized, both in form of single crystals and as a microcrystalline powder. This compound exhibits a broadband green emission with a peak at 515 nm and a full width at half-maximum of 78 nm, and a near-unity photoluminescence quantum yield of 99.5%. Experimental data supported by theoretical calculations indicate that the STE emission is responsible for the green emission with a long lifetime of 2.53 µs. Down-conversion light-emitting device with a high luminous efficiency of 50 lm W−1 based on this compound have been fabricated, and white light has also been achieved with a high color rendering index of 96.7. Moreover, green emissive (TPP)2Cu4I6·2DMSO is utilized in scintillators for X-ray detection and imaging, and as a luminescent ink for encryption applications. © 2023 Wiley-VCH GmbH.

Research Area(s)

  • luminescent inks, organic–inorganic copper halides, scintillators, self-trapped excitons, white light-emitting devices

Citation Format(s)

Organic–Inorganic Copper Halide Compound with a Near-Unity Emission: Large-Scale Synthesis and Diverse Light-Emitting Applications. / Chen, Kunlin; Chen, Bingkun; Xie, Lingling et al.
In: Advanced Functional Materials, Vol. 34, No. 10, 2310561, 04.03.2024.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review