Article
Engineering, Electrical & Electronic
Tanushree Das, Dipteerekha Das, Kajal Parashar, S. K. S. Parashar, A. V. Anupama, Balaram Sahoo, Bikram Keshari Das
Summary: This study investigates the impact of magnesium doping on the structural, optical, and dielectric properties of zinc oxide. The results show that magnesium is successfully doped into the zinc oxide lattice, resulting in a decrease in the dielectric constant and high dielectric loss at elevated temperatures. Additionally, magnesium doping decreases the band gap of zinc oxide, altering its electronic properties and optical behavior.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Physics, Condensed Matter
Bei-Chen Hu, Nan Zhou, Qing-Yu Zhang, Chun-Yu Ma
Summary: This study identifies three green luminescence bands in zinc oxide and reveals their distinct origins and temperature sensitivities. It confirms that the deficiency of oxygen on the sample surface is the main reason for the generation of these bands. Excitons or free electrons and holes play a crucial role in exciting the different luminescence bands.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
P. K. Upadhyay, Neerav Sharma, Shashank Sharma, Ravi Sharma
Summary: This paper presents the PL and TL studies of undoped and Eu-doped ZnO nanophosphors, characterized by XRD and SEM. Eu-doped samples showed an additional XRD peak attributed to Europium oxide, with sizes ranging from 55 to 80 nm. The TL intensity increased linearly with gamma dose, suggesting potential for dosimetry applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Protima Rauwel, Augustinas Galeckas, Erwan Rauwel
Summary: The study investigated the effects of different growth temperatures on the morphology, structure, and crystal properties of ZnO nanoparticles, as well as the optical properties of hybrid ZnO-CNT-Ag nanocomposites. The research demonstrated that under different synthesis conditions, activation or passivation of certain surface states may occur, leading to complex interactions of optical phenomena in the nanocomposites.
Article
Chemistry, Multidisciplinary
Xiaoman Yang, Wenhao Gu, Chen Yuan, Zhicheng Yang, Shaoqian Shi, Zhe Liu, Shuyu Liang, Fei Teng
Summary: In this study, a straightforward one-pot method was used to obtain ZnS with multiple vacancies (V+V--ZnS) for the first time. Newly formed energy levels in V+V--ZnS greatly enhance light absorption and exhibit improved charge separation efficiency compared to ZnS, making V+V--ZnS highly active under visible light. This simple method could be extended to mass production.
Article
Materials Science, Multidisciplinary
Nasir Mahmood, Hareem Khan, Kevin Tran, Pramoda Kuppe, Ali Zavabeti, Paul Atkin, Mohammad B. Ghasemian, Jiong Yang, Chenglong Xu, Sherif Abdulkader Tawfix, Michelle J. S. Spencer, Jian Zhen Ou, Khashayar Khoshmanesh, Christopher F. McConville, Yongxiang Li, Kourosh Kalantar-Zadeh
Summary: A simple self-limiting approach was used to prepare large sheets of highly crystalline hexagonal 2D zinc oxide, revealing a critical impact of the thickness and substrate on its piezoelectric properties. The large piezoelectricity achieved by the synergy of the substrate and specific thickness of ultrathin films offers opportunities for exploring other potentially piezoelectric materials.
Article
Chemistry, Physical
Xiaonan Xi, Yuanyuan Li, Tianyuan Liang, Huaxin Wu, Ruonan Miao, Chao Gu, Jiyang Fan
Summary: The study presents the fabrication of epitaxial pyramidal ZnO-Au HNCs and investigates their unique photophysical properties. Strong coupling between ZnO NC green defect-related recombination and localized surface plasmon resonance of Au nanospheres leads to nearly complete quenching of green defect luminescence in the ZnO NCs.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Lequn Li, Chujun Yao, Li Wu, Kai Jiang, Zhigao Hu, Ning Xu, Jian Sun, Jiada Wu
Summary: In this study, the enhancement of UV emission of ZnO was achieved by covering the ZnO nanorods with a ZnS coating. The results showed that the NBE emission of ZnO was significantly enhanced after the ZnS coating, both at room temperature and reduced temperatures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Letter
Materials Science, Multidisciplinary
Jun-Cheng Yang, Zhiyuan Fu, Huili Ma, Tao Wang, Kai Wang, Lin Wu, Ben Zhong Tang, Hai-Tao Feng, Pu Chen, Qiuying Li
Summary: This study focuses on the stimuli-responsive luminescence of a novel emitter, DCzPy, which emits bluegreen fluorescence in crystal form. Upon gentle grinding, the fluorescence intensity of DCzPy is significantly enhanced with a hypsochromic shift. The emission wavelength returns to its original value after heavy grinding. Moreover, DCzPy exhibits a large bathochromic-shifted and weakened fluorescence under isotropic compression. In film form, the thermoresponsive behavior of DCzPy changes the emission from green to blue. Based on this thermo-induced fluorescence switching, a two-dimensional code for information anticounterfeiting is successfully fabricated.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Antonio Valerio Longo, Baptiste Notebaert, Meriem Gaceur, Gilles Patriarche, Alice Sciortino, Marco Cannas, Fabrizio Messina, Hans Jurgen von Bardeleben, Nicolas Battaglini, Souad Ammar
Summary: This study demonstrates that the enhancement of orange-light luminescence of Mn-doped zinc sulfide nanoparticles induced by exposure to UV light is due to lattice-strain effects rather than passivation effects. UV irradiation in air causes surface oxidation on the nanoparticles, resulting in mechanical strains between the outer crystallographic metal sulfate lattice and the inner sulfide lattice, ultimately affecting the electronic transition processes and leading to increased emission intensity.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Alvaro de Farias Soares, Sonia Hatsue Tatumi, Lilia Coronato Courrol, Renata de Faria Barbosa, Nagabhushana Kuruduganahalli Ramachandraiah
Summary: This study reports the structure, composition, luminescence properties, and transfer phenomena in Brazilian natural fluorapatite. The results show that the sample exhibits photoluminescence, thermoluminescence, and optically stimulated luminescence, as well as phenomena such as photothermo transfer.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Ruiqing Zhang, Huidong Xie, Qiyu Zhao, Zuobin Tang, Chang Yang, Binbin Su
Summary: A novel hybrid antimony chloride (CTP)(2)SbCl5 is synthesized, which exhibits high photoluminescence quantum yield and good stability. The material demonstrates dual-band emission and can be used for white light-emitting diodes (LEDs) with high color rendering index.
INORGANIC CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Mrinal K. Sikdar, Bhabesh Sarangi, Pratap K. Sahoo
Summary: This study investigated the excitonic properties of highly crystalline ZnO hexagonal microdisks grown by chemical vapor deposition, indicating that a negative catalyst like chlorine can suppress crystal growth along the (0001) direction. A qualitative model was proposed to explain the layer-by-layer growth mechanism of the microdisks, with room temperature photoluminescence showing a high NBE emission peak and a minor defect peak. Low-temperature photoluminescence down to 83 K revealed surface exciton peaks in the NBE region and well-fitted higher-order phonon replicas.
Article
Chemistry, Multidisciplinary
Hajime Wagata, Ginji Harada, Eriko Nakashima, Motoki Asaga, Tomoaki Watanabe, Yuya Tanaka, Masaru Tada, Kunio Yubuta
Summary: In this study, ZnO mesocrystals were successfully synthesized in a novel solvent system. The experiments demonstrated their high crystal quality and photoluminescence performance, showing strong ultraviolet emission and weak visible emissions.
Article
Optics
L. Zhang, C. L. Heng, X. Wang, W. Y. Su, T. G. Finstad
Summary: We studied the enhancement effects of ultraviolet emission from rare earth ytterbium doped ZnO films by using capping layers of Al and SiO2 micro-spheres. The results showed that the UV emission was enhanced by several to dozens times compared to the case without any capping. The enhancement was attributed to the increased optical (or electrical) fields around the film surface and defect passivation after the capping.
Article
Materials Science, Multidisciplinary
N. R. Panda, D. Sahu, B. S. Acharya, P. Nayak
CURRENT APPLIED PHYSICS
(2015)
Article
Materials Science, Multidisciplinary
Dojalisa Sahu, N. R. Panda, B. S. Acharya
MATERIALS RESEARCH EXPRESS
(2017)
Article
Materials Science, Ceramics
Dojalisa Sahu, N. R. Panda, B. S. Acharya, A. K. Panda
CERAMICS INTERNATIONAL
(2014)
Article
Chemistry, Multidisciplinary
Nihar Ranjan Panda, Dojalisa Sahu, B. S. Acharya
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2012)
Article
Chemistry, Multidisciplinary
Nihar Ranjan Panda, D. Sahu, S. Mohanty, B. S. Acharya
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2013)
Article
Materials Science, Multidisciplinary
Dojalisa Sahu, N. R. Panda, B. S. Acharya, A. K. Panda
Article
Acoustics
Dojalisa Sahu, B. S. Acharya, A. K. Panda
ULTRASONICS SONOCHEMISTRY
(2011)
Article
Metallurgy & Metallurgical Engineering
N. R. Panda, D. Sahu, B. S. Acharya, P. Nayak, S. P. Pati, D. Das
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2014)
Article
Chemistry, Physical
Debasrita Dash, N. R. Panda, Dojalisa Sahu
APPLIED SURFACE SCIENCE
(2019)
Article
Chemistry, Applied
Dojalisa Sahu
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
(2020)
Article
Multidisciplinary Sciences
Nihar Ranjan Panda, Dojalisa Sahu
Proceedings Paper
Physics, Applied
D. Sahu, B. S. Acharya, N. R. Panda
INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015)
(2016)
Proceedings Paper
Physics, Applied
Dojalisa Sahu, N. R. Panda, B. S. Acharya
PROCEEDINGS OF THE 59TH DAE SOLID STATE PHYSICS SYMPOSIUM 2014 (SOLID STATE PHYSICS)
(2015)
Proceedings Paper
Physics, Applied
N. R. Panda, D. Sahu, B. S. Acharya, P. Nayak
PROCEEDINGS OF THE 59TH DAE SOLID STATE PHYSICS SYMPOSIUM 2014 (SOLID STATE PHYSICS)
(2015)
Proceedings Paper
Physics, Applied
Dojalisa Sahu, Nihar Ranjan Panda, B. S. Acharya, A. K. Panda
SOLID STATE PHYSICS: PROCEEDINGS OF THE 58TH DAE SOLID STATE PHYSICS SYMPOSIUM 2013, PTS A & B
(2014)
Article
Optics
R. B. Adamov, G. A. Melentev, I. V. Sedova, S. V. Sorokin, G. V. Klimko, I. S. Makhov, D. A. Firsov, V. A. Shalygin
Summary: This study investigates the THz luminescence in doped nanostructures with GaAs/AlGaAs quantum wells under interband optical pumping. The results show that the spatial separation of donors and acceptors can greatly enhance the integrated intensity of THz emission.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yanru Li, Lei Zhong, Sha Jiang, Yutong Wang, Binyao Huang, Guotao Xiang, Li Li, Yongjie Wang, Chuan Jing, Xianju Zhou
Summary: In this study, a ratiometric luminescent thermometry based on dual-emission centers was developed using co-doped CaNb2O6 phosphors with Bi3+ and Pr3+. The obtained samples exhibited good thermosensitive and thermochromic characteristics, with a maximum absolute sensitivity of 0.09 K-1 @ 528 K and a maximum relative sensitivity of 2.17 % K-1 @ 453 K.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yujing Gong, Yeqing Wang, Zhiyuan Wang, Yijian Sun, Yi Yu
Summary: Single crystals of Dy3+ single-doped and Dy3+/Tb3+ co-doped CaYAlO4 were grown and analyzed. The incorporation of Tb3+ resulted in increased absorption and emission cross sections. The fluorescence lifetimes and branching ratios of the yellow emission were affected by the presence of Tb3+. The deactivation effect of Tb3+ ions and energy transfer mechanism were also discussed.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Lu Chen, Zhuangzhuang Ma, Jian Chen, Wang Guo
Summary: This study focuses on enhancing the thermal robustness of phosphor converter materials by preparing composite ceramics of YAG:Ce combined with high-thermal-conductivity MgO. The composite ceramics showed high density and thermal conductivity at the optimum temperature of 1400℃. Stable laser-driven white light was obtained under blue laser excitation.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yuwei Wu, Chunhui Niu, Lei Wang, Mingqing Yang, Shiyu Zhang
Summary: Er3+-doped germanate-tellurite glasses were prepared and their structure, luminescent, and temperature-sensing properties were studied. The glass exhibited large values of O2 and O6 and its luminescence intensity varied with temperature.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Kensei Ichiba, Takumi Kato, Kenichi Watanabe, Yuma Takebuchi, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Eu-doped YVO4 single crystals with different concentrations were fabricated to evaluate their photoluminescence and scintillation properties. The results showed that the samples doped with Eu exhibited emission peaks due to 4f-4f transitions in PL and scintillation spectra. Based on the pulse height spectra, the light yield of the Eu-doped samples increased with increasing Eu concentration, while the afterglow level decreased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Daiwen Xiao, Hei-Yui Kai, Anjun Huang, Menglin Song, Ka-Leung Wong, Peter A. Tanner
Summary: The emission spectra of Cs2NaEuCl6 nanoparticles synthesized by the hot injection method are explained. The dispersion of the nanoparticles in alkane solvents in the experiment allows the determination of the magnetic dipole radiative rate for the D-5(0) -F-7(1) channel in vacuum, which is in agreement with the calculated value.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Italia V. Barbosa, Geraldine Dantelle, Alain Ibanez, Lauro J. Q. Maia
Summary: The thermal response and luminescence properties of different oxide matrices were evaluated to design more accurate thermal probes. It was found that thermal probes emitting in BW-II provide better thermal sensing with higher signal-to-noise ratio. Additionally, doping Nd3+ in Y2O3 matrix maximizes luminescence intensity, making it a promising matrix for thermal sensing.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xin Li, Yu Zhang, Hongrui Ren, Lunlong Xie, Yinsheng Di, Mengqing Han, Zhaohui Bai, Quansheng Liu, Liangliang Zhang, Jiahua Zhang
Summary: This study successfully prepared phosphor samples based on Ca3-xLuxSc2-xMgxSi3O12:Ce3+ and investigated their luminescence properties. With the increase in Lu-Mg concentration, the peak of the sample redshifted, but the thermal stability gradually decreased. The LD devices made from CLSMS:Ce3+ fluorescent materials showed a decrease in cyan-green light and an increase in red light as the Lu-Mg concentration increased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Tim Pier, Julia Hopster, Thomas Juestel
Summary: This study investigates and reports on several samples of cerium-activated gallium-based garnet phosphors. The optimal activator concentration was found to be 1 atom-%. The size of non-emitting lanthanide ions and the molar concentration of cerium strongly influenced the crystal field splitting, which in turn shaped the excitation and emission wavelengths.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Guijie Zhao, Wei Shi, Xin Xin, Fengcai Ma, Yongqing Li
Summary: This study reveals for the first time the proton transfer pathways and changes in the photophysical properties of P-TNS with three intramolecular hydrogen bonds. The reaction mechanism and driving force for the proton transfer process are explained through analysis of potential energy surface, frontier molecular orbitals, and hydrogen bond parameters, among others.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Li He, Jinshu Huang, Zhengce An, Haozhang Huang, Yu Zhao, Kexin Zhong, Bo Zhou
Summary: In this study, we designed a NaYF4:Yb3+/Tm3+@NaYF4 core-shell nanostructure to achieve thermochromic upconversion and high thermal sensitivity. We found that the blue upconversion emission of Tm3+ decreased while the deep-red emission increased with elevating temperature. The sample also showed a gradual emission color change from blue to purplish-red, and the optimal relative sensitivity reached 2.79% K-1.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Rupesh A. Talewar
Summary: A series of Li2TiO3 phosphors doped with Mn4+ and codoped with Mn4+ and Er3+ were synthesized, which demonstrated the ability of Mn4+ ions to absorb UV-Vis photons and subsequently transfer energy to Er3+ ions, resulting in the emission of near-infrared light. These materials have the potential to enhance the absorption efficiency of Er3+-based luminescent materials.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xingyuan Ma, Jianfeng Li
Summary: Carbon quantum dots (CQDs) with tunable photoluminescence properties have been synthesized using suitable carbon and dopant sources in an aqueous system. The synthesized CQDs exhibited blue, green, yellow, and red emissions, and solid-state luminescence was achieved through the preparation of solid-state fluorescent films and phosphors. This study provides important technical support for the future development of CQDs synthesis.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
De Bin Fu, Yang Bing Xu, Yu Teng Zhang, Shan Ting Liu, Xiao Fei Yang, Sheng Hua Liu
Summary: A pair of new chiral molecules, (S)-4 and (R)-4, have been designed and synthesized by introducing valine-containing groups at symmetrical positions on the periphery of an indolo[3,2-b]carbazole unit. These molecules exhibit aggregation-induced circular dichroism (AICD) properties in DMF/water mixtures, and in a mixture with 99% water fraction, they show strong, mirror-image, blue circularly polarized luminescence (CPL) signals.
JOURNAL OF LUMINESCENCE
(2024)