Senyang Wang, Shi Tang, Mengting Hua, Yuxuan Chen, Dantian Zhang, Rao Fan, Ling Li
{"title":"Nevel dual-core shell structure CdS@ZnS@NiS cost-effective counter electrode with remarkably enhanced the performance of quantum-dot sensitized solar cells","authors":"Senyang Wang, Shi Tang, Mengting Hua, Yuxuan Chen, Dantian Zhang, Rao Fan, Ling Li","doi":"10.1016/j.jphotochem.2025.116780","DOIUrl":"10.1016/j.jphotochem.2025.116780","url":null,"abstract":"<div><div>Raspberry-like double-core shell CdS@ZnS@NiS material was prepared to use a simple one-step hydrothermal method, and then coated uniformly on carbon nanofibers (CNFs), resulting in the formation of highly efficient counter electrode (CE) for Zn-Cu-In-Se (ZCISe) quantum dot sensitized solar cells (QDSSCs). The QDSSCs used CdS@ZnS@NiS/CNFs as CE reached power conversion efficiency (PCE) of 9.72 %, which is higher than Cu<sub>2</sub>S/brass (8.42 %). This result indicates the dual-core shell structure possesses better catalytic properties, which indicates that the raspberry-shaped double-core shell CdS@ZnS@NiS is a feasible competitor as CE material for QDSSCs.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116780"},"PeriodicalIF":4.7,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tong Hu , Zhu Ran , Lingling Li , Yanan Hu , Sasho Gligorovski , Jiangping Liu
{"title":"Enhanced formation of reactive nitrogen species by photochemical degradation of nitenpyram pesticides in the presence of halide ions","authors":"Tong Hu , Zhu Ran , Lingling Li , Yanan Hu , Sasho Gligorovski , Jiangping Liu","doi":"10.1016/j.jphotochem.2025.116782","DOIUrl":"10.1016/j.jphotochem.2025.116782","url":null,"abstract":"<div><div>Neonicotinoid (NN) insecticides have garnered broad attention due to their extensive global usage. In this study, we demonstrate that the photochemical process of nitenpyram (NPM), a typical NN insecticide at the water surface, leads to the formation of gaseous reactive nitrogen species, such as nitrous acid (HONO) and nitrous oxides (NO<sub>x</sub> = NO + NO<sub>2</sub>). In this paper, we examined the effects of different halide ions (Cl⁻, IO<sub>3</sub>⁻ and Br⁻) on the formation of reactive nitrogen from neonicotinoid photochemical reactions. Interestingly, the results of this study showed that different halogen ions had almost no effect on the photochemical degradation rate of NPM, but could significantly affect the generation rate and conversion process of reactive nitrogen species, among which Br⁻ exhibited the most significant effect on conversion of reactive nitrogen species, promoting the formation of HONO and NO<sub>2</sub>. Furthermore, in the presence of halide ions, the excited triplet state of NPM can undergo a series of radical transformations which trigger the generation of reactive oxygen species (ROS). In particular, the redox reaction between halide ions and nitrate can also contribute to the formation of HONO and NO<sub>2</sub>. Overall, this work unveils a previously overlooked source of atmospheric HONO and NO<sub>x</sub>, which can modulate the global nitrogen cycle and affect the atmospheric oxidizing capacity as well as climate.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116782"},"PeriodicalIF":4.7,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Influence of Photocatalysis on antibacterial properties and Osseointegration of polymeric implant poly (ether–ether–ketone)","authors":"Tianjie Chen , Yohei Jinno , Ikiru Atsuta , Mikari Asakawa , Toru Takeshita , Sora Obinata , Riku Iimori , Takashi Kimura , Yasunori Ayukawa","doi":"10.1016/j.jphotochem.2025.116775","DOIUrl":"10.1016/j.jphotochem.2025.116775","url":null,"abstract":"<div><div>To investigate the influence of photocatalysis induced by nanoscale strontium titanate (SrTiO<sub>3</sub>) and ultraviolet (UV) C photofunctionalization on the antibacterial properties and osseointegration of implant-grade polymer poly (ether ether ketone) (PEEK). Magnetron sputtering was utilized to prepare a nanoscale SrTiO<sub>3</sub> coating on the surface of PEEK specimens. Subsequently, the photocatalyst SrTiO<sub>3</sub> performed a photocatalytic reaction under the induction of UV–C photofunctionalization. The specimens were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), energy dispersive X–ray spectroscopy (EDX), and X–ray diffraction (XRD). The antibacterial properties were investigated by plate colony counting, bacterial adhesion observation, and live/dead bacteria staining for <em>Streptococcus gordonii</em>. In vivo osseointegration was evaluated by Micro-CT and histology using the Wistar rat femur implant model. One–hundred nm thickness SrTiO<sub>3</sub> photocatalyst was constructed on PEEK after magnetron sputtering, the three–dimensional morphology of the specimens was changed, and strontium (Sr) and titanium (Ti) elements were introduced into the PEEK surface after photocatalyst coating. UV–C photofunctionalization did not change the three-dimensional morphology of specimens but increased their surface oxygen (O) content, especially photocatalyst coated PEEK. In addition, the crystal structure of each group did not change. Bacterial experiments showed that UV–C photofunctionalization improved the PEEK's antibacterial activity, and SrTiO<sub>3</sub> photocatalyst amplified the modification performance of UV–C light. In vivo experiments demonstrated that under the synergistic effect of SrTiO<sub>3</sub> photocatalyst and UV–C photofunctionalization, implants had the best osseointegration. This investigation indicated that photocatalysis induced by nano SrTiO<sub>3</sub> coating and UV–C photofunctionalization elevated PEEK's antibacterial activity in vitro and osseointegration in vivo.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116775"},"PeriodicalIF":4.7,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Noncovalent complexes of anionic carbocyanine dyes with human serum albumin as a basis for turn-off fluorescence sensors for bilirubin. Effect of Cu2+ ions","authors":"Pavel G. Pronkin, Alexander S. Tatikolov","doi":"10.1016/j.jphotochem.2025.116781","DOIUrl":"10.1016/j.jphotochem.2025.116781","url":null,"abstract":"<div><div>The development of highly sensitive and selective turn-off fluorescence sensors for bilirubin (BR) is of significant clinical importance. This work explores the basis for such sensors using the noncovalent complexes of meso-substituted anionic carbocyanine dyes with human serum albumin (HSA). The binding of these dyes to HSA is characterized by high association constants (of the order of 10<sup>5</sup>–10<sup>6</sup> M<sup>−1</sup>) and induces a pronounced fluorescence increase due to the stabilization of monomeric <em>trans</em>-isomers. Subsequent introduction of BR, which itself binds strongly to HSA, results in efficient fluorescence quenching (super-quenching effect). Comprehensive spectral studies and molecular docking simulations indicate that the primary quenching mechanism is the competitive displacement of dye molecules from the complex with HSA into the weakly fluorescent free state. The quenching effect is somewhat enhanced in the presence of Cu<sup>2+</sup> ions. The effective Stern–Volmer quenching constants were determined, and the analytical potential of these systems was evaluated, revealing low limits of detection (LOD) and quantification (LOQ) of BR. The dye–HSA and dye–HSA–Cu<sup>2+</sup> complexes presented herein thus create promising and efficient platforms for the rational design of turn-off sensors for BR.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116781"},"PeriodicalIF":4.7,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yun Deng , Shukui Shi , Di Zhao , Mohan Zu , Lu Pang , Xin Li , Zhihao Du , Xiaoli Jin , Zhengdao Li , Fengyun Su , Haiquan Xie
{"title":"Self-regenerative Co2+/Co3+ mediation in Co-doped CdIn2S4 superstructures enables efficient sacrificial-agent-free H2O2 photogeneration","authors":"Yun Deng , Shukui Shi , Di Zhao , Mohan Zu , Lu Pang , Xin Li , Zhihao Du , Xiaoli Jin , Zhengdao Li , Fengyun Su , Haiquan Xie","doi":"10.1016/j.jphotochem.2025.116772","DOIUrl":"10.1016/j.jphotochem.2025.116772","url":null,"abstract":"<div><div>Photocatalytic H<sub>2</sub>O<sub>2</sub> production suffers from severe charge recombination and sacrificial agent dependency. Hydrangea-like Co-doped CdIn<sub>2</sub>S<sub>4</sub> superstructures (Co/CIS (HD)) synthesized via hydrothermal method exhibit hierarchical porous architecture that enhances light harvesting and reactant diffusion. Atomic Co doping introduces mixed-valence Co<sup>2+</sup>/Co<sup>3+</sup> species, reducing the work function from 6.287 to 5.896 eV and extending carrier lifetime. The dual-valent system establishes a self-regenerative redox cycle where Co<sup>3+</sup> mediates photogenerated electron transfer for O<sub>2</sub> activation while Co<sup>2+</sup> scavenges holes to suppress recombination and photocorrosion. Without sacrificial agents, the optimized 6.5-Co/CIS (HD) achieves an exceptional H<sub>2</sub>O<sub>2</sub> production rate of 1952 μmol g<sup>−1</sup> h<sup>−1</sup> under visible light, 6.33 times higher than pristine CdIn<sub>2</sub>S<sub>4</sub>. The catalyst maintains structural stability over five cycles due to dynamic Co<sup>2+</sup>/Co<sup>3+</sup> regeneration. This work provides a strategic design for efficient photocatalytic H<sub>2</sub>O<sub>2</sub> synthesis via synergistic morphological and electronic engineering.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116772"},"PeriodicalIF":4.7,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Amal Sam Sunny, Vaitheesh Jeyapalan, Vaidhyanathan Ramamurthy
{"title":"Visible light induced supramolecular photocatalysis: triplet sensitized one-way geometric isomerization of encapsulated β-ionyl derivatives","authors":"Amal Sam Sunny, Vaitheesh Jeyapalan, Vaidhyanathan Ramamurthy","doi":"10.1016/j.jphotochem.2025.116770","DOIUrl":"10.1016/j.jphotochem.2025.116770","url":null,"abstract":"<div><div>This study illustrates a new strategy of visible-light supramolecular photocatalysis, where triplet sensitization and host–guest chemistry combine to enable controlled, efficient <em>trans</em>→<em>cis</em> isomerization in aqueous media. Triplet energy transfer catalysis is leveraged here to achieve geometric isomerization of β-ionyl derivatives within a supramolecular host capsule under visible light. All-<em>trans</em> β-ionylidene trienes (retinal analogues) were encapsulated in the water-soluble octa acid (OA) capsule, and visible-light-absorbing dyes (methylene blue, Rose Bengal, Eosin Y; MB, RB and EY) served as external triplet sensitizers. Upon green-light irradiation, the confined guests underwent clean one-way isomerization from 7-<em>trans</em> to 7-<em>cis</em>, attaining near-quantitative conversion. Surprisingly, even anionic sensitizer dyes (RB and EY) effectively induced isomerization in the anionic OA host system, evidencing an unusual like-charge attraction. NMR studies confirmed that the isomerization occurs inside the OA cavity, and that the supramolecular environment modulates the reaction's photostationary state – <em>cis</em> isomers are favored more in the capsule than in bulk solution, due to the capsule's influence on excited-state decay pathways. Furthermore, we demonstrate that the OA-confined photocatalysis can be driven by sunlight in water with comparable efficiency to LED irradiation.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116770"},"PeriodicalIF":4.7,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Manqi Xi , Yao Zheng , Yufeng Du , Tong Zhu , Tian Tian , Ruijin Yu
{"title":"Optical characteristics and Judd–Ofelt analysis of novel red phosphors Rb5La(MoO4)4:Eu3+ for plant-cultivation LEDs, w-LEDs, and latent fingerprint detection","authors":"Manqi Xi , Yao Zheng , Yufeng Du , Tong Zhu , Tian Tian , Ruijin Yu","doi":"10.1016/j.jphotochem.2025.116778","DOIUrl":"10.1016/j.jphotochem.2025.116778","url":null,"abstract":"<div><div>A range of red-emitting Rb<sub>5</sub>La(MoO<sub>4</sub>)<sub>4</sub>:<em>x</em>Eu<sup>3+</sup> phosphors with varying dopant concentrations (<em>x</em> = 0.05–1.00 mol) were prepared through high-temperature solid-state methods. Comprehensive characterization through X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence spectroscopy analysis demonstrated its outstanding performance. Excitation at 395 nm wavelengths induced four distinct radiative transitions from the <sup>5</sup>D<sub>0</sub> level to <sup>7</sup>F<sub>1</sub> (591 nm), <sup>7</sup>F<sub>2</sub> (616 nm), <sup>7</sup>F<sub>3</sub> (657 nm), and <sup>7</sup>F<sub>4</sub> (707 nm) levels. The Judd-Ofelt parameters (Ω<sub>2</sub>, Ω<sub>4</sub>) of Rb<sub>5</sub>La(MoO<sub>4</sub>)<sub>4</sub>:Eu<sup>3+</sup> phosphors were determined from the emission spectrum, confirming that Eu<sup>3+</sup> occupies asymmetric positions within the crystal lattice of Rb<sub>5</sub>La(MoO<sub>4</sub>)<sub>4</sub>. The luminescence intensity reached its maximum at 0.60 mol doping concentration, beyond which the interaction of the nearest-neighbor ions led to concentration quenching. Notably, all synthesized phosphors demonstrated exceptional color purity exceeding 99.8 %. The Rb<sub>5</sub>La(MoO<sub>4</sub>)<sub>4</sub>:0.60Eu<sup>3+</sup> is accompanied by an impressive internal quantum yield of 60.22 % and an activation energy (<em>E</em><sub>a</sub>) of 0.28 eV. The developed red-emission LED device showed remarkable spectral overlap with photosynthetic pigments such as chlorophyll <em>b</em>, phycocyanin, and phytochrome red P<sub>R</sub>, which can provide supplementary light for plants in both the red (600–700 nm) wavelength range. A white light-emitting (w-LED) diode constructed with this phosphor exhibited a correlated color temperature (CCT) of 5407 K and a color rendering index (CRI, <em>R</em><sub>a</sub>) value of 90. The phosphor demonstrates fingerprint visualization capabilities, particularly in resolving Level I–III ridge details on multicolor substrates. Based on the above findings, Rb<sub>5</sub>La(MoO<sub>4</sub>)<sub>4</sub>:Eu<sup>3+</sup> phosphors hold considerable potential for applications in plant cultivation LEDs, w-LEDs, and fingerprint detection.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116778"},"PeriodicalIF":4.7,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maedeh Jafari , Mehrnaz Gharagozlou , Mahdi Behzad , Narges Elmi Fard , Mohammad Tavakkoli Yaraki
{"title":"Magnetic ZnFe2O4/TiO2 nanoparticles-decorated HKUST-1 Heterostructure: Synthesis and visible light-activated Photocatalyst for degradation of cationic and anionic dyes","authors":"Maedeh Jafari , Mehrnaz Gharagozlou , Mahdi Behzad , Narges Elmi Fard , Mohammad Tavakkoli Yaraki","doi":"10.1016/j.jphotochem.2025.116745","DOIUrl":"10.1016/j.jphotochem.2025.116745","url":null,"abstract":"<div><div>A visible light-responsive heterostructured magnetic metal-organic framework (MOF), ZnFe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub>/HKUST-1, its preparation, and performance in the degradation of methylene blue (MB) and methyl orange (MO) dyes were compared with the performance of ZnFe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub> and ZnFe<sub>2</sub>O<sub>4</sub> nanoparticles. Removal experiments were conducted under various conditions, including pH, photocatalyst mass (g), temperature (°C), and dye concentration (mg/L), and the effect of each of these factors on photocatalyst performance was evaluated. Under optimal conditions, the ZnFe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub>/HKUST-1 photocatalyst exhibited degradation efficiencies of 97.88 % and 98.93 % for MB and MO dyes, respectively. The results indicate that after 5 cycles, the photocatalyst recovery efficiency is 93.68 % and 95.01 % for MB and MO dyes, respectively. Based on the findings derived from the experiments concerning the degradation of MB and MO dyes, the peak correlation coefficients recorded was 0.9956 and 0.9799, respectively, which pertain to the intraparticle diffusion (IPD) kinetics. Furthermore, evaluation of thermodynamic parameters showed that the Gibbs free energy changes (ΔG°) were negative at all temperatures investigated in the MB and MO photocatalytic processes, indicating that these processes occur spontaneously. In addition, the negative enthalpy changes (ΔH°) during the removal process using ZnFe<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub>/HKUST-1 indicate the exothermic nature of this process.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116745"},"PeriodicalIF":4.7,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study on degradation of nitrobenzene in wastewater by in-situ deposited CdS/TiO2 heterojunction bipolar electrochemical-photoelectric synergistic system","authors":"Kun Jia , Weishi Xie , Peng Jia , Yeheng Qiu","doi":"10.1016/j.jphotochem.2025.116776","DOIUrl":"10.1016/j.jphotochem.2025.116776","url":null,"abstract":"<div><div>Nitrobenzene (NB), a toxic organic pollutant widely present in industrial wastewater, poses severe environmental risks due to its persistence and biological toxicity. Conventional treatment technologies suffer from inherent limitations, such as long biological treatment cycles, difficult adsorbent regeneration, and low efficiency of single-component photocatalysis caused by rapid recombination of photogenerated charge carriers. To address these challenges, we developed a bipolar electrochemical-photoelectric synergetic system based on in-situ deposited CdS/TiO<sub>2</sub> heterojunctions. The <em>Z</em>-scheme CdS/TiO<sub>2</sub> heterojunction, synthesized via a deposition method, exhibits enhanced visible-light absorption and accelerated separation of photogenerated carriers, both critical for enhancing catalytic activity. The bipolar electrochemical configuration enables semiconductor catalysts to exist in a suspended state, eliminating the constraint of electrode area, and operates at low electrolyte concentrations, thereby avoiding secondary pollution-a critical advantage over traditional photoelectrocatalytic systems. Under visible light irradiation, the synergetic system achieves exceptional NB degradation performance: with an applied bias of 10 V, 15 mmol/L NB is degraded by 99.13 % within 40 min, with aniline as the dominant product (selectivity 98.47 %). Notably, the system maintains stable activity over 10 consecutive cycles, demonstrating robust durability. This work highlights the synergistic merits of <em>Z</em>-scheme heterojunctions and bipolar electrochemistry, providing a promising strategy for industrial-scale degradation of NB in high-salinity wastewater.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116776"},"PeriodicalIF":4.7,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Huan Dong , Lanxiu Xiao , Zhuo Tang , Jingyi Liu , Liya Jiang , Xu Wu , Linwen Jiang
{"title":"Orange-red emitting of Sm3+-doped Ba3Ga2Ge4O14 phosphor with high color rendering index and high color purity for LED applications","authors":"Huan Dong , Lanxiu Xiao , Zhuo Tang , Jingyi Liu , Liya Jiang , Xu Wu , Linwen Jiang","doi":"10.1016/j.jphotochem.2025.116777","DOIUrl":"10.1016/j.jphotochem.2025.116777","url":null,"abstract":"<div><div>This study prepared a series of orange-red Ba<sub>3</sub>Ga<sub>2</sub>Ge<sub>4</sub>O<sub>14</sub> (BGG): <em>x</em>Sm<sup>3+</sup> (<em>x</em> = 1, 3, 5, 7, 9 %) phosphors via a high temperature solid-state method. The X-ray diffraction results confirmed the high phase purity of fabricated products. The diffuse reflection spectra showed that the optical band gap of this system was about 4.29 eV. Under an excitation wavelength of 401 nm, the strongest red-orange emission occurred at 599 nm (<sup>4</sup>G<sub>5/2</sub> → <sup>6</sup>H<sub>7/2</sub>). The optimal doping concentration of Sm<sup>3+</sup> in BGG was determined to be 3 % with a color purity of 99.28 %. Thermal analysis revealed the exceptional thermal stability of BGG: 3 %Sm<sup>3+</sup>. The internal quantum efficiency of BGG: 3 %Sm<sup>3+</sup> phosphor was measured to be 33.41 %. LEDs packaged with this phosphor had a color rendering index of 92.85, which was far higher than that of traditional LEDs. Using BGG: 3 %Sm<sup>3+</sup> phosphor encapsulation for white LEDs confirmed its potential applications in white LEDs, providing new option for the development of LED applications.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116777"},"PeriodicalIF":4.7,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}