Article
Spectroscopy
Jingjie Yu, Yifei Xu, Shikao Shi, Jiye Wang, Huihua Song, Lianshe Fu
Summary: This paper reports the fabrication of a novel Tb3+ activated layered lutetium hydroxide and the tuning of its structure and spectroscopic properties through ion-exchange and intercalation of organic molecules. The hybrid material exhibited enhanced fluorescence emission and excellent stability, making it a highly potential sensor for the detection of Cu2+ ions.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Physical
Yogendra Nath Chouryal, Rahul Kumar Sharma, Neeraj Tomar, Neelam Yadav, Heera Lal Kewat, Ishfaq Abdullah Wani, Sandeep Nigam, Praveen Kumar Surolia, Sri Sivakumar, Pushpal Ghosh
Summary: This study reports on the synthesis of phase pure, cubic BaGdF5:Er/Yb-doped nanocrystals using ionic liquids, which can be used as an absorption layer in dye-sensitized solar cells (DSSCs) to enhance solar energy conversion efficiency. Bright-green and red emissions were observed from the nanoparticles. The DSSCs with BaGdF5:Er3+(1%)/Yb3+(10%)/TiO2 absorption layer achieved the highest photon conversion efficiency of 7.75% and current density of 15.9 mA/cm2, showing a significant enhancement compared to those with only TiO2 layer.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Ana Belen Munoz-Garcia, Iacopo Benesperi, Gerrit Boschloo, Javier J. Concepcion, Jared H. Delcamp, Elizabeth A. Gibson, Gerald J. Meyer, Michele Pavone, Henrik Pettersson, Anders Hagfeldt, Marina Freitag
Summary: Dye-sensitized solar cells (DSCs) and dye-sensitized photoelectrochemical cells (DSPECs) have seen a revival in recent years as they offer unique properties such as low cost, non-toxic materials, colorfulness, transparency, and efficiency in low light conditions. This review covers advancements in DSC technology over the past decade, including theoretical studies, characterization techniques, materials, applications, and commercialization efforts by various companies.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Environmental Sciences
Shyam Sunder Sharma, Khushboo Sharma, Jyoti Sahu, Jaymin Ray, Saral Kumar Gupta, Saurabh Dalela
Summary: Rare-earth metal-oxide nanoparticles were synthesized and studied as photo-anode materials for dye sensitized solar cells. The nanoparticles exhibited crystalline nature and nano range size. The band-gap values of the nanoparticles indicate nanostructure formation. The optimized nanoparticles showed improved photovoltaic output and device performance compared to unmodified cells.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Applied
Anil Reddy Marri, Heather Flint, Elizabeth A. Gibson, John Fielden
Summary: Three new thiophenyl bridged triarylamine-donor based dyes with pyridyl anchoring groups and indolium acceptors have been synthesized and studied. Phenylpyridyl anchored bis-indolium showed the best performance.
Article
Energy & Fuels
Jingshan He, Wenjun Wu
Summary: This study presents a new approach for the evolution of all solid-state DSSCs by dissolving the I-/I-3(-) redox couple in commercial UV glue and solidifying it under UV light as electron transport material. The device exhibits superior stability and an optimum power conversion efficiency of 6.15%.
Article
Materials Science, Multidisciplinary
Viplove Bhullar, Devarani Devi, Fouran Singh, Sundeep Chopra, Anil Krishna Debnath, Dinesh Kumar Aswal, Aman Mahajan
Summary: In this study, substitutional and interstitial Au doping have been achieved in TiO2 nanoparticle-nanofiber composites using ion implantation technique. Experimental and theoretical results show that substitutional Au doping leads to higher strain and lower band gap. Dye sensitized solar cells prepared with substitutional doping are found to be 23.9% more efficient than those with interstitial Au based on current density-voltage and electrochemical impedance spectroscopy studies.
Article
Chemistry, Physical
Dimple Dimple, Sebastien Lebegue, Mariachiara Pastore
Summary: The study theoretically characterizes the adsorption mechanism of different anchoring groups on the CuCrO2 surface, showing distinct stable modes for each group. On the stoichiometric surface, mono-dentate binding is preferred, while bidentate binding becomes the preferred mode when Cu+ vacancies are considered.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
P. Dhamodharan, Jian Chen, C. Manoharan
Summary: Highly oriented zinc oxide nanorods (ZnO NRs) were successfully grown on ITO substrates using hydrothermal method, with necessary ZnO seed layers deposited using spray pyrolysis. The ZnO NRs-based photoanodes prepared with both methods showed efficient performance for DSSCs. Vertical growth of ZnO NRs with specific length and diameter ranges was observed, with a hexagonal structure and preferential orientation (c-axis) confirmed by XRD and HRTEM.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
La Ode Agus Salim, Muhammad Zakir Muzakkar, Ahmad Zaeni, Maulidiyah Maulidiyah, Muhammad Nurdin, Siti Naqiyah Sadikin, Jaenuddin Ridwan, Akrajas Ali Umar
Summary: Doping TiO2 with sulfur (S) improves the photoelectrical properties of the photoanode, increasing the power conversion efficiency of dye-sensitized solar cells (DSSC).
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Physical
Jae-hun Bae, Hwang-Ju Jeon, Sung-Ho Cho, Yong-beom Cho, Sung-Eun Lee, Tae-Oh Kim
Summary: In this study, a dye-sensitized solar cell (DSSC) doped with Cu, Co was fabricated by simultaneously sonicating TiO2 and a trace amount of a transition metal precursor. The cavitation bubbles occurred during sonication resulted in defects on the surface of the TiO2 particles. The maximum energy-conversion efficiency of the DSSCs fabricated by TiO2 which doped with Cu and Co by ultrasonic treatment was 4.16%, and that of the DSSCs fabricated with TiO2 not doped with a transition metal was measured at 2.93%. Doping TiO2 with a transition metal using ultrasonic treatment contributed to the improvement of the performance of the TiO2 photoelectrode.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Li Zhang, Junjie Zhang, Xu Tang, Yong Chen, Xinting Wang, Zijian Deng, Changchun Wang, Xichuan Yang, Bin Sun
Summary: In this study, the design of coplanar organic dyes ZL002, ZL004, and ZL006 with rigid structures led to densely packed arrangements on the surface of TiO2, resulting in improved photoelectric properties, electron injection efficiency, and longer charge-recombination lifetime.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Applied
Fengsheng Ge, Fang Xu, Kun Gong, Dongzhi Liu, Wei Li, Lichang Wang, Xueqin Zhou
Summary: The design and synthesis of two novel D-A dyes cTPAPh-NO2 and cTPABT-PyCN2 were reported, and their photophysical and electrochemical properties were investigated. The attachment of carboxyl groups reduced the light harvesting and intramolecular charge separation ability of cTPAPh-NO2. In contrast, cTPABT-PyCN2 exhibited weak fluorescence and efficient intramolecular charge separation characteristics. These dyes showed promising potential as p-type sensitizers with effective charge separation characteristics in dye-sensitized solar cells.
Article
Chemistry, Physical
Hany M. Abd El-Lateef, Mai M. Khalaf, Van-Duong Dao, Ibrahim M. A. Mohamed
Summary: This study investigates the electrochemical impedance analysis of synthesized TiO2 nanofibers as photoanodes. The morphological character, crystallinity, and chemical contents of the photoanode substrates were analyzed. The impact of N-doping on charge transfers was also studied.
Review
Energy & Fuels
Minmin Yang, Jihuai Wu, Zhang Lan, Jianming Lin, Miaoliang Huang, Leqing Fan
Summary: Reviewing the literature on tandem solar cell (TSC) research from 2000 to 2019, identifying the top 10 research hotspots and clusters, and revealing the development orientation of TSC research. The study indicates that organic solar cells are the mainstream of TSC research, while perovskite solar cells are a typical emerging trend.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Xia Chen, Juanmei Liu, Jihuai Wu, Guodong Li, Qi Chen, Fangfang Cai, Sijia Zhu, Jingxu Tian, Weihai Sun, Zhang Lan
Summary: The perovskite solar cell (PSC) has achieved comparable research efficiency with silicon solar cells, but still faces challenges in improving efficiency and stability. In this study, an interfacial modifier called polyethylene glycol dodecyl ether (Brij) is introduced to enhance the interface between the perovskite layer and the hole transport layer. The results show that Brij improves carrier extraction and transportation, reduces carrier recombination, and enhances the moisture resistance and environmental stability of perovskite films. The modified PSC achieves an optimal power conversion efficiency of 22.57%, compared to the efficiency of 20.66% in the pristine device.
Article
Materials Science, Multidisciplinary
Fengxian Cao, Huiwen Chen, Shibo Wang, Pengxu Chen, Chenwei Zhu, Zhang Lan, Weihai Sun, Yunlong Li, Jihuai Wu
Summary: By in-situ forming two-dimensional perovskites on the surface of three-dimensional perovskite films through a self-assembly method, along with the deposition of hole transporting material simultaneously, the fabrication process of PSCs is greatly simplified. This approach reduces trap states in devices and enhances the performance of the solar cells, leading to an increase in average power conversion efficiency by 10% and maintaining more than 82% of initial PCE after 672 hours of exposure under full 1-sun simulation.
MATERIALS TODAY PHYSICS
(2022)
Article
Chemistry, Physical
Mian Gao, Zhitao Shen, Gentian Yue, Chen Dong, Jihuai Wu, Yueyue Gao, Furui Tan
Summary: In this study, a novel synthesis method was developed to prepare efficient and economical non noble metal counter electrode (CE) electrocatalytic materials with good catalytic ability and stability for dye-sensitized solar cells (DSSCs). The resulting micro-nanostructured composite of CE showed high power conversion efficiency and a distinctive porous structure that facilitated fast charge transport.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Jingxu Tian, Jihuai Wu, Yuhe Lin, Jialian Geng, Jialiang Shi, Wenhui Lin, Wenxuan Hao, Chaoran Ke, Jinhui Yang, Weihai Sun, Zhang Lan
Summary: As a solution to the challenges of improving efficiency and stability in perovskite solar cells (PSCs), a cage polyamine molecule hexamethylenetramine (HMTA) is incorporated into the tin oxide electron transport layer (ETL). The introduction of HMTA improves electron extraction ability and energy-level alignment of functional layers. It also reduces defects and enhances stability, resulting in a PSC with a high power conversion efficiency of 22.37%. This research demonstrates the use of cage polyamines as an effective method for improving the performance and stability of PSCs.
Article
Chemistry, Physical
Chunyan Deng, Jihuai Wu, Yuqian Yang, Yitian Du, Ruoshui Li, Qi Chen, Yuan Xu, Weihai Sun, Zhang Lan, Peng Gao
Summary: By functionalizing the buried interface using DDSI2, the distribution and size of PbI2 clusters can be modulated, leading to improved performance of perovskite films. DDSI2 serves as a multifunctional modifier that optimizes the energy level of SnO2 and passivates buried interface defects. The hydrogen bonding and coordination between DDSI2 and perovskite reduce crystal growth rate and lattice stress, resulting in enhanced perovskite quality and modulated PbI2 distribution. The DDSI2-modified device exhibits a power conversion efficiency of 24.10% and a storage stability of 1800 h, demonstrating a unique strategy for the rational control of PbI2 in efficient and stable perovskite solar cells.
ACS ENERGY LETTERS
(2023)
Review
Materials Science, Multidisciplinary
Zeyu Song, Zhongkai Hao, Xu Zhang, Jihuai Wu
Summary: In recent years, there has been an increase in the development and research of photocapacitors. They have the potential to address the intermittent output problem of solar cells but their efficiency is much lower than that of photovoltaic devices, limiting their usability. As an intersection of photovoltaic devices and supercapacitors, the development of photocapacitors is still in its early stages and faces numerous challenges. This review provides an introduction to the classification of photocapacitors, outlines the development process, and points out the problems that need to be solved.
FUNCTIONAL MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Anling Tong, Chenwei Zhu, Huiying Yan, Chunhong Zhang, Yinuo Jin, Yunjia Wu, Fengxian Cao, Jihuai Wu, Weihai Sun
Summary: Inorganic CsPbBr3-based perovskite solar cells have excellent humidity and thermal stability, but those without a hole transport layer suffer from serious carrier recombination. To solve this problem, a passivation layer of polymethyl methacrylate (PMMA) is used between the CsPbBr3 film and carbon electrode. This PMMA layer suppresses trap sites, facilitates faster carrier extraction and transportation, improves energy level alignment, and acts as a moisture protective layer. The modified device achieved a champion PCE of 9.60% with a high VOC of 1.58 V, and negligible PCE loss after 400 hours of aging.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Yitian Du, Ying Wang, Jihuai Wu, Qi Chen, Chunyan Deng, Ran Ji, Liuxue Sun, Lina Tan, Xia Chen, Yiming Xie, Yunfang Huang, Yana Vaynzof, Peng Gao, Weihai Sun, Zhang Lan
Summary: Sodium bicarbonate is used as an additive in perovskite solar cells to improve the formation of perovskite film and enhance the crystallinity and grain structure, resulting in improved device efficiency and stability.
Article
Nanoscience & Nanotechnology
Wenhui Lin, Jihuai Wu, Jingxu Tian, Yuhe Lin, Puzhao Yang, Yongheng Huang, Xiaoyuan Jiang, Lin Gao, Ying Wang, Weihai Sun, Zhang Lan, Miaoliang Huang
Summary: The introduction of multifunctional additive TFMBI into perovskite films effectively repairs surface defects, improves the performance of perovskite solar cells, and enhances their environmental stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Pengxu Chen, Weichun Pan, Sijia Zhu, Fengxian Cao, Anling Tong, Ruowei He, Zhang Lan, Weihai Sun, Jihuai Wu
Summary: In this study, defects in the SnO2 electron transport layer and perovskite layer were effectively passivated by introducing a multifunctional molecule TMACl. The presence of TMACl suppressed the defects in SnO2 and passivated the defects in PVK, resulting in improved device performance of perovskite solar cells. The devices based on TMACl-doped SnO2 and TMACl-modified SnO2 electron transport layers achieved higher efficiencies compared to the pristine device, and the TMACl-modified SnO2 maintained 88% of its original efficiency after 35 days of storage in a humidity-controlled chamber.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Weichun Pan, Pengxu Chen, Sijia Zhu, Ruowei He, Qingshui Zheng, Fengxian Cao, Zhang Lan, Jihuai Wu, Weihai Sun, Yunlong Li
Summary: The introduction of 6-amino-1-hexanol (HAL) with bilateral electron-donating groups between SnO2 and perovskite (PVK) optimizes the buried interfacial properties and improves the PVK film quality in perovskite solar cells. HAL acts as a molecular bridge to effectively passivate surface defects of SnO2 and stabilize the [PbI6](4)- octahedra at the buried interface. The HAL-modified device exhibits significantly enhanced photovoltaic performance and improved stability after storage.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Jinbiao Jia, Beibei Shi, Jia Dong, Zhe Jiang, Shuaibing Guo, Jihuai Wu, Bingqiang Cao
Summary: By introducing 4-iodo-1H-imidazole into the perovskite precursor, defects in the perovskite films can be prevented, resulting in a significant increase in open-circuit voltage and decreased nonradiative recombination. As a result, the device efficiency is increased by 20% compared to the control device.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yuqian Yang, Qiu Xiong, Jihuai Wu, Yongguang Tu, Tianxiao Sun, Guixiang Li, Xuping Liu, Xiaobing Wang, Yitian Du, Chunyan Deng, Lina Tan, Yuelin Wei, Yu Lin, Yunfang Huang, Miaoliang Huang, Weihai Sun, Leqing Fan, Yiming Xie, Jianming Lin, Zhang Lan, Valerio Stacchinii, Artem Musiienko, Qin Hu, Peng Gao, Antonio Abate, Mohammad Khaja Nazeeruddin
Summary: This study introduces a novel strategy of spinodal decomposition to create a poly(3-hexylthiophene)/perovskite (P3HT/PVK) heterointerface, effectively reducing energy and carrier losses in perovskite solar cells (PSCs). The P3HT/PVK heterointerface improves energy alignment, reducing energy loss at the interface, and the interpenetrating structure bridges a transport channel, decreasing carrier loss at the interface. This innovative approach achieves a remarkable power conversion efficiency of 24.53% for PSCs.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Le-Qing Fan, Cheng-Long Geng, Xu-Geng Deng, Jiao-Juan Chen, Zheng-Xue Wu, Yun-Fang Huang, Ji-Huai Wu
Summary: In comparison with supercapacitors with aqueous solution electrolytes, quasi-solid-state supercapacitors based on hydrogel electrolytes exhibit more extensive application prospects. In this study, a water-in-salt hydrogel electrolyte with a wide electrochemical window and redox nature was prepared. A quasi-solid-state supercapacitor device with high specific capacity, large specific energy, and long-term cyclic stability was successfully assembled.
NEW JOURNAL OF CHEMISTRY
(2022)
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)
