Organic Indium Halides with Near-Unity Photoluminescence Quantum Yields for Highly Efficient Luminescent Inks and White Light Emitting Diodes DOI
Qi Wang, Wei Jiang,

T Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Zero-dimensional (0D) organic indium halides have been emerged as promising broadband light emitters with wide application prospects, but most of the present suffer from low photoluminescence quantum yield (PLQY), and a high-power excitation source is needed to obtain desirable performance. In this work, we elaborately select appropriate cations crystal structural engineering obtained series highly efficient 0D bromides. Under UV excitation, these display yellow emissions (550-600 nm) near-unity PLQYs, which represents one highest values in all previously reported halides. Benefiting successful nanoscale engineering, luminescent inks based on are facilely prepared by dispersing nanocrystals into various solvents. The ink can be utilized print anticounterfeiting patterns, displays photoreversible switching visible/invisible transformation under alternating irradiation visible light. Furthermore, white emitting diodes fabricated high color rendering index above 90 using down-conversion phosphors. This work not only promotes development also significantly broadens solid-state illumination anticounterfeiting, etc.

Language: Английский

Enhanced UV Stability of Perovskite Solar Modules via Downshifting Luminescent Organic–Inorganic Copper Halide Film with Near‐Unity Efficiency DOI Open Access
Zhe Liu,

Zheng Liu,

Liangliang Deng

et al.

Small, Journal Year: 2025, Volume and Issue: 21(11)

Published: Feb. 14, 2025

Abstract Obtaining efficient perovskite solar modules (PSMs) with enhanced UV stability is essential for their practical applications, yet remains a significant challenge. In this work, highly organic–inorganic copper halide downshifting film that significantly enhances the of PSMs demonstrated by converting high‐energy harmful photons into beneficial visible light contribute to photovoltaic performance. The tetrapropylammonium (TPA) cation selected as main framework synthesize series halides, denoted Br x I y . A near‐unity photoluminescence quantum yield (PLQY) 99.51% can be achieved precisely controlling Br/I ratio 2:4, 2 4 , which one highest values reported date. dual self‐trapped excitons (STEs) luminescence mechanism systematically investigated both temperature‐dependent and pressure‐dependent experiments. This dual‐STEs enables efficiently absorb re‐emit photons, thereby mitigating photodegradation induced light. Finally, effective layer. an optimal efficiency 22.24%, maintaining over 90% initial after exposure total dose 66.07 kWh m −2

Language: Английский

Citations

0
Organic‐Inorganic Cuprous Halides With Reversible Photoluminescence for Multiple Optical Applications DOI
Sijun Cao, Jun’an Lai, Yijia Wang

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 8, 2024

Abstract 0D organic‐inorganic Cu(I)‐based halides have gained significant attention due to their low toxicity, structural adjustability, and moderate fabrication conditions. However, it is still challenging explore stable efficient hybrid that phase transition tunable spectra for multifunctional photoelectric applications. Herein, two copper halides, green‐emissive (MTPP) 2 CuI 3 yellow‐emissive Cu 4 I 6 (MTPP = Methyltriphenylphosphonium), are successfully synthesized using a slow cooling method. Both compounds exhibit high photoluminescence quantum yield (PLQY) of 81.95 99.7%, remarkable steady‐state light 38 750 63 700 photons per MeV, respectively. The scintillation screen the based on vacuum‐filtration enables X‐ray imaging resolution 17.83 18.49 lp mm −1 , showing great potential in practical Moreover, reversible fast transformation between them occurs when stimulated by ethanol or MTPP solutions, without requiring additional thermal treatment, which endows with level anti‐counterfeiting under room temperature (RT). It worth noting they display resistance water, maintaining its purity even after being immersed water 30 days. This study introduces new approach investigate Cu‐based excellent performance, stability, tunability multiple

Language: Английский

Citations

4
Novel cyan emissive organic–inorganic copper halides: Phase transition, flexible large-area composite film, and multifunctional luminescent applications DOI

Lingling Xie,

Zheng Liu,

Ning Lv

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1012, P. 178495 - 178495

Published: Jan. 1, 2025

Language: Английский

Citations

0
Luminescent Properties and Thermal Stability of [PPh4][Cu3I4] with a Unique Helical Structure DOI Creative Commons
Luyi Chen, Andrey A. Petrov, Mingming Li

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(3), P. 543 - 543

Published: Jan. 25, 2025

Hybrid halocuprates (I) with organic cations show great potential for optoelectronic applications due to their tunable luminescence and high thermal stability. In this study, the iodocuprate [PPh4][Cu3I4], featuring unique helical chains of face-sharing tetrahedra, was synthesized characterized. This compound exhibits a bandgap 3.1 eV orange at low temperature, attributed self-trapped exciton emission. [PPh4][Cu3I4] demonstrates exceptional stability among hybrid decomposition above 380 °C, forming stable melt ~255 °C without Cu+ oxidation in ambient atmosphere.

Language: Английский

Citations

0
Novel Orange–Red Emissive Organic–Inorganic Hybrid Copper Halide for White Light-Emitting Diodes Application DOI

Lingling Xie,

Ning Lv,

Xuelu Wang

et al.

Optics Letters, Journal Year: 2025, Volume and Issue: 50(8), P. 2731 - 2731

Published: March 24, 2025

Organic–inorganic hybrid copper(I)-based metal halides (OIHCMHs) have emerged as promising alternatives to lead perovskites due their exceptional optical properties. However, the lack of low-energy light-emitting compounds prohibits further applications. Herein, we report an orange–red emissive (C 19 H 18 P) 2 Cu 4 Br 6 with a zero-dimensional structure. The photoluminescence (PL) peak locates at 640 nm PL quantum yield 69.3%, and large Stokes shift is 245 nm. Experimental analyses demonstrate bright broadband light emission derived from synergistic effect metal-to-ligand charge transfer or halide-to-ligand (MLCT/HLCT) excited state cluster-centered (CC) state. Furthermore, can be used phosphor for didoes (LEDs), by adding other blue- cyan-emitting phosphors, white LED high color rendering index over 94 achieved. This work not only demonstrates material design strategies preparing OIHCMHs but also inspires potential low-dimensional in quality

Language: Английский

Citations

0
Organic Indium Halides with Near-Unity Photoluminescence Quantum Yields for Highly Efficient Luminescent Inks and White Light Emitting Diodes DOI
Qi Wang, Wei Jiang,

T Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Zero-dimensional (0D) organic indium halides have been emerged as promising broadband light emitters with wide application prospects, but most of the present suffer from low photoluminescence quantum yield (PLQY), and a high-power excitation source is needed to obtain desirable performance. In this work, we elaborately select appropriate cations crystal structural engineering obtained series highly efficient 0D bromides. Under UV excitation, these display yellow emissions (550-600 nm) near-unity PLQYs, which represents one highest values in all previously reported halides. Benefiting successful nanoscale engineering, luminescent inks based on are facilely prepared by dispersing nanocrystals into various solvents. The ink can be utilized print anticounterfeiting patterns, displays photoreversible switching visible/invisible transformation under alternating irradiation visible light. Furthermore, white emitting diodes fabricated high color rendering index above 90 using down-conversion phosphors. This work not only promotes development also significantly broadens solid-state illumination anticounterfeiting, etc.

Language: Английский

Citations

0