Journal of Luminescence最新文献

{"title":"Ultrafast dynamics of mCP and Br-mCP: Insights from transient absorption spectroscopy","authors":"Yonggang Yang ,&nbsp;Feiyao Geng ,&nbsp;Zhinan Jiang ,&nbsp;Yang Liu ,&nbsp;Tiantian Guan ,&nbsp;Chaochao Qin ,&nbsp;Chunsheng Zhuang ,&nbsp;Yufang Liu","doi":"10.1016/j.jlumin.2024.120940","DOIUrl":"10.1016/j.jlumin.2024.120940","url":null,"abstract":"<div><div>Heavy atom activated organic room-temperature phosphorescence (RTP) has attracted considerable interest due to its high phosphorescence quantum yield and prolonged lifetime. This research provides a detailed analysis of the transient absorption spectroscopy of 1,3-Bis(N-carbazolyl)benzene (mCP) and 9,9'-(5-Bromo-1,3-phenylene)bis(9H-carbazole) (Br-mCP) in toluene solution. In the femtosecond transient absorption (fs-TA) spectroscopy of mCP, the excited state absorption (ESA) signal decreases at 630 nm while the triplet-triplet absorption (TTA) signal increases at 420 nm. Meanwhile, the isosbestic point observed at 455 nm indicates an intersystem crossing (ISC) lifetime of 15.4 ns. Moving on to the nanosecond transient absorption (ns-TA) spectroscopy, the TTA signal reaches its peak at 27.3 ns before decreasing, with the triplet lifetime of mCP measured at 2.8 μs. Br-mCP exhibits a similar dynamic evolution to mCP, but with a quicker ISC process (9.4 ns) and a longer triplet lifetime (3.9 μs). The quicker ISC process in Br-mCP is ascribed to the presence of heavy atom in the molecular structure, leading to an enhanced spin-orbit coupling constant (ξ(S₁, T₃)_Br-mCP = 1.371 cm⁻¹ &gt; ξ(S₁, T₄)_mCP = 0.060 cm⁻¹). The prolonged triplet lifetime of Br-mCP (3.9 μs &gt; 2.8 μs) results from its lower reorganization energy, effectively reducing non-radiative vibrational energy losses within the molecule. This work significantly enhances our understanding of RTP materials incorporating heavy atoms.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120940"},"PeriodicalIF":3.3,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unravelling the luminescence spectrum of garnet grossular var. tsavorite: The role of chromium (III), manganese (II) and misattribution of vanadium (II)","authors":"A. Idini ,&nbsp;R. Argazzi ,&nbsp;F. Frau ,&nbsp;M. Fantauzzi ,&nbsp;C. Angeli","doi":"10.1016/j.jlumin.2024.120936","DOIUrl":"10.1016/j.jlumin.2024.120936","url":null,"abstract":"<div><div>Gem quality garnet var. tsavorite from Tanzania is investigated by means of SEM-EDS, XPS and fluorescence spectroscopy to decipher its luminescence spectrum. The EDS analysis confirms that the main constituents of the tsavorite samples from Tanzania are those of grossularia (i.e. Ca, Al, Si, O), with V, Mn, Cr, Ti and Mg as minor but characteristic elements (particularly V, Mn and Cr) of the tsavorite variety. The XPS analysis shows that the oxidation state of Mn is +2 and that of V is +3. The luminescence of tsavorite in the yellow region (591 nm) is originated by Mn²⁺ in dodecahedral coordination (D₂ point symmetry) while the luminescence in the red region (690–750 nm) is originated by Cr³⁺ in octahedral coordination (O_h point symmetry) in a strong crystal field. Contrary to what is often reported in the literature, this study demonstrates that V²⁺ (or other 3d transition metal ions as well) is not responsible for the red emissions of tsavorite.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120936"},"PeriodicalIF":3.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultraviolet–near infrared luminescence characteristics of Nd:La2Be2O5 single crystals for near-infrared emitting scintillators","authors":"Kensei Ichiba,&nbsp;Takumi Kato,&nbsp;Daisuke Nakauchi,&nbsp;Noriaki Kawaguchi,&nbsp;Takayuki Yanagida","doi":"10.1016/j.jlumin.2024.120938","DOIUrl":"10.1016/j.jlumin.2024.120938","url":null,"abstract":"<div><div>The fabrication of 0.1, 0.5, 1.0, and 5.0 % Nd:La₂Be₂O₅ single crystals was carried out by the floating zone method, and photoluminescence (PL) and scintillation properties were measured. The PL spectra showed some emission lines which was derived from the 4f-4f transitions of Nd³⁺ ions. The scintillation spectra showed a broad emission band originating from some lattice defect and the emission lines due to the 4f–4f transitions of Nd³⁺ ions. The afterglow levels of Nd:La₂Be₂O₅ were 192.3 (0.1 % Nd), 205.9 (0.5 % Nd), 228.2 (1.0 % Nd), and 315.4 (5.0 % Nd) ppm. The 1.0 % Nd:La₂Be₂O₅ showed the highest intensity in the dose-rate response functions among the samples, and a lower detection limit was 0.003 Gy/h.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120938"},"PeriodicalIF":3.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient manipulation of photoluminescence by organic cations and Sb doping in hybrid manganese chlorides","authors":"Yingjie Mao ,&nbsp;Zhichao Zhang ,&nbsp;Guojun Zhou ,&nbsp;Chen Fang ,&nbsp;Yihan Liu ,&nbsp;Denghui Xu ,&nbsp;Jia Zhao ,&nbsp;Aicong Geng ,&nbsp;Jun Zhou","doi":"10.1016/j.jlumin.2024.120937","DOIUrl":"10.1016/j.jlumin.2024.120937","url":null,"abstract":"<div><div>Zero-dimensional (0D) Mn(II)-based hybrids with the typical d–d transitions have been rapidly developed benefitting from the environmental friendliness, blue light excitation and the high thermal stability. Herein, we first designed two novel green-emitting 0D Mn(II)-based hybrids (C₁₆H₂₈N)₂MnCl₄ and (C₂₁H₄₆N)₂MnCl₄, where the organic cations cocrystallize with four-coordinated [MnCl₄]^2- tetrahedrons. Upon blue-light excitation, these two crystals exhibited narrow-band green emission with distinct emission intensity and FWHM as well as thermal quenching behavior, which is analyzed by the influence of the crystal structure of different organic cations on the luminescence performance. Furthermore, multiple emission color can be observed from green to orange-red in (C₁₆H₂₈N)₂MnCl₄:Sb³⁺ by regulating the [SbCl₅]^2-/[MnCl₄]^2- molar ratio or excitation wavelength. Our study not only enriches the influence of organic cations on crystal structure and luminescence performance, but also provides a new direction towards realizing the multi-color emission by Sb³⁺ ions doping strategy.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120937"},"PeriodicalIF":3.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature dependent optical properties of ultrathin InAs quantum well","authors":"Rahul Kumar ,&nbsp;Yurii Maidaniuk ,&nbsp;Fernando Maia de Oliveira ,&nbsp;Yuriy I. Mazur ,&nbsp;Gregory J. Salamo","doi":"10.1016/j.jlumin.2024.120939","DOIUrl":"10.1016/j.jlumin.2024.120939","url":null,"abstract":"<div><div>Temperature-dependent photoluminescence (TDPL) and time-resolved photoluminescence (TRPL) of ultrathin InAs quantum wells (QWs) in GaAs matrix have been investigated to understand the optical properties of carriers. Samples containing different thicknesses of InAs (0.5, 0.75, 1, 1.2, 1.4 monolayers) have been used for this study. The PL peak position of InAs with temperature does not follow the Varshni model at low temperatures. The activation energy (<em>E</em>_<em>A</em>) of these QWs has been calculated from TDPL. As expected, the thinnest QW sample (0.5 monolayer) results in the smallest <em>E</em>_<em>A</em> of 23 meV, whereas the thickest QW sample (1.4 monolayer) results in the highest E_A of 79 meV. Carrier lifetime has been calculated from TRPL measurement for varying temperatures. At 10 K, the carrier lifetime increased almost linearly from 250 to 800 ps with the InAs QW thickness. Thicker InAs QW results in a longer carrier lifetime, which has been explained by the carrier escape model. Higher temperatures resulted in a decrease in carrier lifetime, which suggests carrier escape is dominating the temporal decay behavior.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120939"},"PeriodicalIF":3.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of novel silica-encapsulated core-satellite nanotags for enhanced SERS detection","authors":"Haoquan Wang ,&nbsp;Qi Yang ,&nbsp;Yan Zhang ,&nbsp;Bo Peng ,&nbsp;Feng Wu ,&nbsp;Zewei Quan","doi":"10.1016/j.jlumin.2024.120935","DOIUrl":"10.1016/j.jlumin.2024.120935","url":null,"abstract":"<div><div>Developing a SERS nanotag with high signal intensity, excellent signal stability, and biocompatibility is of significant importance in the fields of food safety, drug testing, and virus detection. In this work, silica-encapsulated, indocyanine green (ICG)-modified Au octahedral core-small Au spherical nanoparticles (NPs) satellite nanostructures (Au/Au@ICG@SiO₂) are uniformly synthesized as surface-enhanced Raman scattering (SERS) tags, which provide abundant “hot spots” and also increase the stability of Raman reporter molecule ICG to greatly facilitate subsequent functionalization and detection. Both experimental and numerical results demonstrate that this Au/Au@ICG nanostructure achieve a detection limit of 10⁻⁷ M for ICG in aqueous solution ascribed to the increased number of hot spots compared with Au octahedral NPs. As-prepared Au/Au@ICG@SiO₂ SERS nanotags are further integrated with a lateral flow immunoassay (LFIA) for the detection of the SARS-CoV-2 nucleocapsid protein. Compared to the traditional bio-recognition method on LFIA strips with the detection limit of 8 pg/mL, the detection capability for the SARS-CoV-2 nucleocapsid protein is improved approximately 16 times (500 fg/mL) based on this novel SERS tag and custom-built adaptive Raman mapping spectrometer. This Au/Au@ICG@SiO₂ SERS tag is expected to play a significant role in early detection, prevention, and control of similar infectious viruses in the future.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120935"},"PeriodicalIF":3.3,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ln3+-doped glasses: Advancing molecular logic for integration into photonic and electronic devices","authors":"Rafael F. Salgueiro ,&nbsp;Fernando E. Maturi ,&nbsp;Victor M.P. da Silva ,&nbsp;Danilo Manzani ,&nbsp;Carlos D.S. Brites","doi":"10.1016/j.jlumin.2024.120932","DOIUrl":"10.1016/j.jlumin.2024.120932","url":null,"abstract":"<div><div>The rapid miniaturization of electronic devices has pushed the limits of conventional silicon-based technologies, creating a pressing need for novel approaches to sustain the exponential growth of computing power. This study explores the innovative application of Ln³⁺-doped glasses in developing molecular logic systems as a potential solution. Exploiting Eu³⁺ and Dy³⁺, we investigated the luminescence properties under various physical stimuli such as excitation wavelength and temperature. Our findings reveal the capability to construct logic elements of varying complexity, from simple AND and OR gates to advanced FULL-ADDER and FULL-SUBTRACTOR circuits. This work represents the first instance of using Ln³⁺ exclusively for molecular logic via physical stimuli. The robust and stable optical properties of the doped glasses enable their integration into conventional electronic and photonic devices, potentially revolutionizing the landscape of molecular logic and computing. This research not only enhances the understanding of light-matter interactions in Ln³⁺-doped systems but also opens new pathways for the development of miniaturized, high-performance innovative computational devices.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120932"},"PeriodicalIF":3.3,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the photoluminescence of Pr(III) activated Ca2P2O7 polymorphs","authors":"Tim Pier,&nbsp;Franziska Schröder,&nbsp;Jan Kappelhoff,&nbsp;Julia Hopster,&nbsp;Thomas Jüstel","doi":"10.1016/j.jlumin.2024.120934","DOIUrl":"10.1016/j.jlumin.2024.120934","url":null,"abstract":"<div><div>In this work the optical properties of two distinct, praseodymium activated, UV-C emitting pyrophosphate polymorphs are presented. The materials were obtained as single-phase samples using a facile solid state method with annealing at target phase-dependent temperatures. The activator concentration dependent luminescence quenching was investigated revealing significant differences between the <em>[Xe]4f</em>^<em>2</em> → <em>[Xe]4f</em>^<em>2</em> and the <em>[Xe]4f</em>^<em>1</em><em>5d</em>^<em>1</em> → <em>[Xe]4f</em>^<em>2</em> transitions. The highest emission intensities were observed at Pr³⁺ concentration of 0.5 and 2.0 % for the <em>[Xe]4f</em>^<em>2</em> → <em>[Xe]4f</em>^<em>2</em> line and the <em>[Xe]4f</em>^<em>1</em><em>5d</em>^<em>1</em> → <em>[Xe]4f</em>^<em>2</em> band emission, respectively. Furthermore, temperature dependent fluorescence spectroscopy and VUV spectroscopy were employed to investigate the thermal quenching behaviour as well as the excitation and emission properties in the deep UV range. Fitting of the temperature dependent emission integrals showed thermal quenching temperatures exceeding 700 K. It was revealed that the samples show two types of emission that can be traced back to the inter- and intraconfigurational transition of trivalent praseodymium. Praseodymium emission bands around 235 and 265 nm correspond to the various <em>[Xe]4f</em>^<em>1</em><em>5d</em>^<em>1</em> → <em>[Xe]4f</em>^<em>2</em> interconfigurational transitions. Meanwhile, narrow emission lines throughout the visible and NIR range are caused by the <em>[Xe]4f</em>^<em>2</em> → <em>[Xe]4f</em>^<em>2</em> intraconfigurational transitions of Pr³⁺. Qualitative and quantitative comparisons between the emission properties of the two polymorphs revealed significant differences arising from the different coordination environments. α-Ca₂P₂O₇:Pr phosphors exhibited around 60 % of the emission intensities of the β-Ca₂P₂O₇ materials in the red spectral range while a reversed trend was observed for the UV emission caused by <em>[Xe]4f</em>^<em>1</em><em>5d</em>^<em>1</em> → <em>[Xe]4f</em>^<em>2</em> transitions.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120934"},"PeriodicalIF":3.3,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Broadband 1.45–2.1 μm luminescence in Er3+/Tm3+/Yb3+ tri-doped bismuth-germanate glasses","authors":"Hüseyin Can Çamiçi,&nbsp;V.A.G. Rivera,&nbsp;Théo Guérineau,&nbsp;Sophie LaRochelle,&nbsp;Younès Messaddeq","doi":"10.1016/j.jlumin.2024.120929","DOIUrl":"10.1016/j.jlumin.2024.120929","url":null,"abstract":"<div><div>Optical properties of novel Er³⁺-doped, Er³⁺/Yb³⁺ and Er³⁺/Tm³⁺ co-doped and Er³⁺/Tm³⁺/Yb³⁺ tri-doped bismuth-germanate glasses were fabricated. Thermal characterization by differential scanning calorimetry showed the suitability of the glass for fiber drawing. Tri-doped sample presented a broadband luminescence spectrum ranging from 1450 to 2100 nm when it was excited by 980 and 1480 nm laser diodes. Energy transfer mechanisms from the donor (Yb³⁺, Er³⁺) to acceptor (Er³⁺, Tm³⁺) ions were found out to be the cause of the intense luminescence with broad bandwidth which can be tailored through doping content and concentration. It was observed that the Tm³⁺ addition helps broadening the luminescence spectrum, while the Yb³⁺ incorporation enhances the emission intensity. This study provides insightful contributions to the possibility of signal amplification in L + U-bands and beyond, up to 2100 nm.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120929"},"PeriodicalIF":3.3,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Judd-Ofelt analysis and temperature sensing properties of polyethylmethacrylate (PEMA) networks doped with CdNb2O6: Er3+/Yb3+ phosphors","authors":"Thami Buhari,&nbsp;Demet Kaya Aktaş,&nbsp;Murat Erdem,&nbsp;Gönül Eryürek","doi":"10.1016/j.jlumin.2024.120928","DOIUrl":"10.1016/j.jlumin.2024.120928","url":null,"abstract":"<div><div>Research on the sensitivity of temperature measurements and optical thermometry involving rare earth ions has been an area of interest in the field of photonics and materials science. Introducing polymer networks as a new host material has an important role due to their properties including a versatile and stable environment for rare earth ions and rapid response in temperature detection. In this work, linear and crosslinked polyethylmethacrylate (PEMA) networks doped with Er³⁺/Yb³⁺ (1.5 mol % Er³⁺, 2 mol% Yb³⁺) synthesized by free-radical crosslinking polymerization with 0.1 EMA (weight %) at 60 °C were used to investigate direct and indirect optical bandgap energies and Urbach energy from UV–Visible spectra. The Judd-Ofelt (JO) approach was employed to analyze parameters <em>Ω</em>_<em>t</em> (<em>t</em> = 2,4,6), spontaneous transition probabilities (<em>Α</em>), branching ratios (<em>β</em>) and radiative lifetimes (<em>τ</em>) as a function of linear and crosslinked PEMA doped nano-crystalline CdNb₂O₆: Er³⁺/Yb³⁺. The stimulated emission cross-sections of the transitions ²H_11/2⟶⁴I_15/2, ²S_3/2⟶⁴I_15/2 and ²F_9/2⟶⁴I_15/2 of Er³⁺/Yb³⁺ were calculated by two different methods; Fuchtbauer-Ladenburg formula and modified theory, respectively. The gain bandwidth cross-section product for the ²H_11/2⟶⁴I_15/2 was found to be 162.06. <span><math><mrow><msup><mn>10</mn><mrow><mo>−</mo><mn>28</mn></mrow></msup><msup><mtext>cm</mtext><mn>3</mn></msup></mrow></math></span>, 260.94. <span><math><mrow><msup><mn>10</mn><mrow><mo>−</mo><mn>28</mn></mrow></msup><msup><mtext>cm</mtext><mn>3</mn></msup></mrow></math></span> and 461.20. <span><math><mrow><msup><mn>10</mn><mrow><mo>−</mo><mn>28</mn></mrow></msup><msup><mtext>cm</mtext><mn>3</mn></msup></mrow></math></span> of Er³⁺/Yb³⁺ embedded in linear, low and high crosslinked PEMA samples, respectively. JO parameters and stimulated emission cross-sections increased; therefore, radiative lifetimes decreased by increasing crosslinking content. In addition, the temperature dependence of upconversion (UC) luminescence was monitored under 975 nm excitation. The fluorescence intensity ratio (FIR) method examined the temperature sensing under two thermally coupled levels at 525 and 548 nm. The maximum sensitivities obtained from the FIR technique within the 300–650 K temperature range shifted to lower temperatures with increasing crosslinker content. Hence, linear and crosslinked polymer hosts doped rare-earth ions can be candidates for remote temperature sensors across various fields.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"277 ","pages":"Article 120928"},"PeriodicalIF":3.3,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}