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Open research questions in Luminescence Properties of Advanced Materials

94 gap statements mined from Luminescence Properties of Advanced Materials papers in our 4.5M-paper local library, which holds 2,017 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • However, strategies to achieve this goal through asynchronous regulation of dual‐mode information have not been established.

    Asynchronously Tunable Persistent Luminescence and Photochromism in SrGa 2 O 4 : Dy 3+ , Zn 2+ for Dual‐Level Data Storage and Self‐Locking Information Encoding · 2026 · DOI

  • However, most ML materials are limited to the visible light spectral band and single triggering mechanisms, limiting their practical applications in bioimaging and medical non-destructive detection.

    Near-infrared mechanoluminescence from Sr3Sn2O7:Nd3+ for potential bioimaging and non-destructive detection · 2025 · DOI

  • However, the doping characteristics are rarely studied in detail and are yet to be fully understood, creating a gap in the existing knowledge of these multifunctional materials.

    New insights into structural and spectroscopic characteristics of Cu2+ doped β-Ca3(PO4)2: Correlation between Cu2+ concentration and material properties · 2025 · DOI

  • Abstract Crystal‐field engineering accelerates the discovery of Ce 3+ cyan phosphors, yet structure–property links remain unclear.

    A Novel Cyan‐Emitting Phosphor K 3 Ca 0.3 Y 0.7 Si 2 O 7 :Ce 3+ Enables Full‐Spectrum Lighting and Fingerprint Detection via Phase‐Structure Alteration · 2025 · DOI

  • However, limited by the doping concentration of erbium ions in matrix materials, a long path of WGA is required for high gain.

    Design a Hybrid WGA Based on Si 3 N 4 and Li + ‐Doped Er/Yb Silicate: Achieving High Gain in a Short Distance · 2025 · DOI

  • However, the application of NIR‐II phosphor in optical communications remains underexplored.

    Dual Divalent Cations‐Doped Near‐Infrared Garnet Phosphors with Charge Compensation and Surface Modification for Next‐Generation Broadband Fiber Amplifiers · 2025 · DOI

  • Abstract UV luminescence holds great promise for secure optical anti‐counterfeiting but is often limited by the need for shorter‐wavelength excitation sources.

    Unlocking Phonon‐Assisted Emission in the UV Using Visible‐Excitable Phosphors for Security Applications · 2025 · DOI

  • However, the transient luminescent kinetics of UC remain underexplored in existing work, thereby hindering practical applications that demand rapid response and high luminescence intensity.

    Temporal Evolution Kinetics of Upconversion Population Distribution Resulting in Transient Luminescence Enhancement · 2025 · DOI

  • However, Eu3+ ions typically emit orange/red luminescence from 5D0‐7F1,2 transitions, and the development of high‐quality Eu3+ doped far‐red phosphors is still lacking and challenging.

    Achieving the Anomalous Far‐Red Emission of Eu3+ by Tailoring Distorted Square Antiprism Symmetry in Potassium‐Bismuth‐Phosphates · 2024 · DOI

  • Although previous research provided some insights into borates from the viewpoints of synthesis, structure, and defect evolutions, their photoluminescence (PL) with dopants is still insufficient for actual application, especially on aspects of efficiency/stability.

    Insight into Structure, Regulatable Photoluminescence of Stably Self and Codoped Phosphor Ba3Y2B6O15: Dy/Eu for nUV wLEDs · 2024 · DOI

  • However, the design of high‐efficiency and thermally stable NIR phosphors still poses a significant challenge, whose quantum efficiencies (QEs) are directly limited by their absorption efficiency (AE) toward incident light.

    Activator Heavy Solid Solution in Rigid Framework: An Effective Strategy Toward Highly Efficient and Thermally Stable Near‐Infrared Emission for Wireless Communication · 2024 · DOI

  • Currently, there is little research on LT PersL phosphors, and multicolor LT PersL in a single host material has not been reported.

    Liquid Nitrogen Temperature Multicolor Persistent Luminescence in a Single Host Material · 2024 · DOI

  • However, the wide application of this phosphor is limited by the degradation of its luminescent properties in high‐temperature, high‐humidity, and high‐sulfur‐content environment.

    Revealing The Degradation Mechanism of (Sr,Ca)AlSiN3:Eu2+ Phosphor Aged Under Thermal‐Moisture‐Sulfur Conditions: A Combined Experimental and Ab Initio Study · 2024 · DOI

  • This work proves the feasibility of chemical unit cosubstitution strategy in emission tuning of Cr 3+ ‐doped phosphors, which can stimulate further studies on the emission‐tunable NIR‐emitting phosphor materials.

    Simultaneous Broadening and Enhancement of Cr 3+ Photoluminescence in LiIn 2 SbO 6 by Chemical Unit Cosubstitution: Night‐Vision and Near‐Infrared Spectroscopy Detection Applications · 2021 · DOI

  • Furthermore, the innovative applications of REOs include but are not limited to the development of solid-state optical devices, optoelectronic systems, and photocatalytic agents.

    A Review on Optical Applications, Prospects, and Challenges of Rare-Earth Oxides · 2021 · DOI

  • The need for controlling the emission behavior of lanthanide-doped upconversion nanoparticles. The lack of understanding of the power-dependent luminescence of these nanoparticles.

    Tunable power-dependent upconversion emission of Er\(^{3+}\)--Tm\(^{3+}\) co-doped nanoparticles for bioimaging · 2026 · DOI

  • Future research should investigate the properties of other AVO3 metavanadates under high pressure. The study of the pressure-induced structural transition in other materials is a future research direction.

    Pressure induced structural transition and optoelectronic modification in inorganic metavanadate phosphor · 2026 · DOI

  • The study identifies a gap in the understanding of the pressure-induced structural transition in CsVO3. The investigation of the optical and structural properties of CsVO3 under high pressure is a gap in the current research.

    Pressure induced structural transition and optoelectronic modification in inorganic metavanadate phosphor · 2026 · DOI

  • Low brightness and shallow tissue penetration of long-wavelength mechanoluminescent materials. Limited emission efficiency of existing ML materials.

    Boosting near-infrared mechanoluminescence from activated gallate solids by Ga2O3 heterojunction engineering for intelligent sensing · 2026 · DOI

  • Upconversion quantum yields of rare earth nanoparticles remain modest. Sensitivity for detecting small numbers of nanoparticles is limited. Potential for thermal damage to surrounding tissues due to high laser power requirements.

    Wavelength Tunability in Targeted Drug Delivery: The Role of Rare Earth Elements · 2026 · DOI

  • Exploration of new host materials and doping strategies. Investigation of plasmonic enhancement and lithium enhancement techniques. Development of more efficient and biocompatible materials for targeted drug delivery.

    Wavelength Tunability in Targeted Drug Delivery: The Role of Rare Earth Elements · 2026 · DOI

  • The influence of sintering conditions on the structural, morphological, and luminescent properties of CaMoO4 phosphors is not well understood. The optimization of sintering temperature for good luminescent properties is needed.

    Influence of sintering temperature on the structural and luminescent properties of CaMoO4 phosphor · 2026 · DOI

  • The synthesis process requires high temperatures and careful control of the reaction conditions. The phosphors may have limited thermal stability and durability.

    Energy extraction from dark Fe3+ in A2Sc2B4O11:Fe3+, Yb3+ (A = Sr, Ba) toward promoted NIR luminescence and pc-LED light source for multifunctional applications · 2026 · DOI

  • The study faces the challenge of understanding the underlying energy transfer mechanisms in ZnO/RE2O3 composites. The composites may have limitations due to the ionic radius mismatch and limited solubility of rare-earth ions in the ZnO lattice.

    Near-infrared upconversion in ZnO/RE2O3 (RE = Nd, Yb) composites prepared by thermal decomposition · 2026 · DOI

  • There is a need to understand the underlying energy transfer mechanisms in ZnO/RE2O3 composites. The study aims to address the gap in knowledge regarding the optimization of near-infrared upconversion performance in these composites.

    Near-infrared upconversion in ZnO/RE2O3 (RE = Nd, Yb) composites prepared by thermal decomposition · 2026 · DOI

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94 gap statements have been mined from Luminescence Properties of Advanced Materials papers in our 4.5M-paper local library, which holds 2,017 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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