Article
Energy & Fuels
Lingju Meng, Xihua Wang
Summary: This article focuses on the research progress and applications of doping techniques for colloidal quantum dot materials, as well as innovative solutions to doping issues. By analyzing lead chalcogenide CQDs and perovskite CQDs, the different working scenarios of each doping technique are compared, and future perspectives are raised.
Article
Materials Science, Multidisciplinary
M. P. Frolov, S. O. Leonov, Yu V. Korostelin, V. Kozlovsky, Ya. K. Skasyrsky, M. Sukhanov, A. P. Velmuzhov, P. Fjodorow, B. Galagan, B. Denker, S. E. Sverchkov, V. V. Koltashev, V. G. Plotnichenko
Summary: The influence of rare earth dopant concentration on the quality of selenide laser glass was investigated. It was found that an increase in rare earth doping level leads to optical losses and a decrease in the optical damage threshold. A room temperature laser system with a Fe:ZnSe pump laser and Ce3+:Ge20Sb10Ga5Se65 bulk glass was demonstrated, achieving a slope efficiency of 25% and a maximum output energy of 45 mJ.
OPTICAL MATERIALS EXPRESS
(2022)
Review
Chemistry, Multidisciplinary
Junwei Liu, Kaihu Xian, Long Ye, Zhihua Zhou
Summary: Lead chalcogenide colloidal quantum dot solar cells show excellent performance but face challenges in reducing open-circuit voltage loss, with research focusing on exploring strategies to decrease V-oc losses and achieve higher conversion efficiencies.
ADVANCED MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
D. Shanmukha Sai, K. Swapna, K. Deepthi, J. V. Shanmukh Kumar, Sk Mahamuda, M. Venkateswarlu, P. Sruthi, D. Amer, A. S. Rao
Summary: Antimony-lead-oxyfluoroborate glasses doped with Eu3+ ions were studied for their luminescence properties, showing suitability for visible red light-emitting device applications.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Sumandeep Kaur, Vaibhav Katyal, Vaishakh Plakkot, Nisha Deopa, Aman Prasad, A. S. Rao
Summary: In this study, Sm3+ ions doped borosilicate glasses were synthesized with different concentrations (0.5 to 2.5 mol%) using the melt quench method. The structural analysis and optical properties of these glasses were studied, revealing characteristics such as amorphous nature, band gap energy, and photoluminescent excitation and emission peaks.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Review
Chemistry, Physical
Jaehyun Kim, Seungho Song, Yong-Hoon Kim, Sung Kyu Park
Summary: Photonic technologies have seen increased interest in high-performance sensor devices, particularly in the use of multifunctional photodetectors based on low-dimensional nanomaterials. Semiconducting quantum dots show promise for these applications due to their optical absorption coefficient, bandgap tunability, and compatibility with large-scale production processes. The research delves into materials, devices, applications, and hybrid device architectures to advance wearable photodetectors and neuromorphic applications. Challenges and opportunities for QD-based photonic devices are also discussed with a forward-looking perspective.
Review
Chemistry, Physical
Xue Zhao, Haifei Ma, Hongxing Cai, Zhipeng Wei, Ying Bi, Xin Tang, Tianling Qin
Summary: Infrared detection technology is important in remote sensing, imaging, monitoring, and other fields. Most infrared photodetectors are currently based on InGaAs and HgCdTe materials, which have limitations in terms of cost, production processes, and compatibility with silicon-based readout integrated circuits. To overcome these limitations, research focuses on reducing the cost of high-performance photodetectors. Colloidal quantum dot photodetectors based on mainstream lead chalcogenide colloidal quantum dots have the advantages of solution processing, low cost, and good compatibility with silicon-based substrates. This paper summarizes the recent development of these infrared photodetectors.
Article
Physics, Applied
Orhan Kibrisli, Erdinc Erol, Ali Ercin Ersundu, Miray Celikbilek Ersundu
Summary: CdSe and CsPbBr3 quantum dots have been successfully synthesized in the same glass host, showing tunability in emission color. High quantum yield values have been obtained under different excitation wavelengths, indicating the potential of the prepared glasses to be used as tunable wavelength converters for photonic and opto-electronic applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Optics
Chenyang Zhu, Lin Wang, Di Zhao, Yuting Yang, Xiaofeng Liu, Beibei Xu, Zhousu Xu, Jianrong Qiu
Summary: By incorporating CsPbBr3 quantum dots into a glass host, non-resonant optical nonlinearity and multiphoton upconversion processes were measured for the first time, showing stable four-photon UC photoluminescence, low optical limiting thresholds, and high nonlinear optical absorption coefficients similar to colloid processed metal halide perovskite QDs. This monolithic inorganic glass with incorporated MHPQDs could provide a better platform for strong light-matter interaction for MHPs, with high robustness against air and moisture.
Article
Optics
Christian Jirauschek
Summary: The Maxwell-Lindblad transmission line (MLT) equations are introduced as a model for hybrid photonic and microwave-electronic quantum devices. The hybrid concept allows for high-bandwidth photodetectors and modulators, and can be extended to quantum-engineered lasers for improved short-pulse and frequency comb operation. The MLT model provides a theoretical description for hybrid quantum devices, enabling realistic device simulations in agreement with experimental data.
LASER & PHOTONICS REVIEWS
(2023)
Article
Thermodynamics
M. M. Soraya, Fouad Abdel-Wahab, A. A. Elamin, E. R. Shaaban, N. N. Ali Karrar
Summary: The thermal properties of different compositions of Ge30-xSbxTe10Se60 (x = 0, 5, 10, 15, 20 at.%) glassy materials were studied using DSC. The glassy materials exhibited phase separation at x = 0, 5, 10, 15 at.%, but combined phases in the glass matrix at x = 20 at.%. The heating rate and composition affected the glass transition temperature, initial temperature of crystallization, peak crystallization temperature, and melting temperature. The increase in antimony content led to a decrease in these temperatures. The activation energy for glass transition and crystallization were also influenced by the composition.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Multidisciplinary
Marcel Meyer, Corentin Deprez, Timo R. van Abswoude, Ilja N. Meijer, Dingshan Liu, Chien-An Wang, Saurabh Karwal, Stefan Oosterhout, Francesco Borsoi, Amir Sammak, Nico W. Hendrickx, Giordano Scappucci, Menno Veldhorst
Summary: This article introduces a method of voltage adjustment using the gate voltage characteristics to achieve uniformity in the pinch-off voltages of quantum dots. The method is demonstrated to increase the stability of the quantum dots and offers new possibilities for scalable spin qubit arrays.
Article
Engineering, Environmental
Myeong-Hun Jo, Kue-Ho Kim, Hyo-Jin Ahn
Summary: This study proposes a novel structure by introducing P-doped carbon quantum dots (P-CQDs) into amorphous WO3 (a-WO3) to resolve the structural instability issue. The functional groups of P-CQDs form strong hydrogen bonds with a-WO3, allowing the material to withstand repetitive electrochemical reactions and bending without deformation. In addition, the functional groups and graphitic carbon of P-CQDs improve the wetting ability of Li ions and the electrical conductivity, enhancing the electrochemical activity and kinetics. The resulting P-CQD graft-functionalized a-WO3 electrodes demonstrate excellent EC energy-storage performances.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Ceramics
Juan Liu, Jingjing Liu, Wenchao Zhang, Kai Li, Chao Liu
Summary: Lead chalcogenide quantum dots with controlled composition, size, and optical properties are obtained in glasses through precipitation and thermal treatment. The addition of chalcogen elements in the glasses and the adjustment of heat-treatment conditions enable modulation of the properties of PbSexS1-x quantum dots. Increasing the concentration of S in the glasses reduces the relative fraction of Se in the quantum dots, while higher heat-treatment temperatures promote the enrichment of Se in the quantum dots. These alloyed quantum dots exhibit improved photoluminescence quantum yields and enhanced resistance to thermal quenching.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Multidisciplinary
Xue Chen, Yu Wang, Chenxi Peng, Wenbo Hu, Zhongbin Wu, Weidong Xu, Suli Wu, Zhi Luo, Yung Doug Suh, Timur Sh. Atabaev, Xiyan Li, Xiaowang Liu, Wei Huang
Summary: This paper reports a novel method for synthesizing CD-doped SiO(2) MPs with tunable afterglow properties and size distributions. The pseudomorphic transformation of SiO(2) MPs enables CD doping, providing a hydrogen bond-enriched environment for triplet state stabilization, resulting in green afterglow while maintaining uniformity in size and morphology. Furthermore, the utility of CD-doped SiO(2) MPs in the fabrication of PC patterns is demonstrated, exhibiting multiple optical responses under different lighting conditions.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Ceramics
Hanyi Liu, Jing Wang, Luyao Li, Chao Liu, Jian Ruan, Jianjun Han
Summary: In this study, Pb1-xSrxSe quantum dots were successfully prepared in LAS glass-ceramics using conventional melt-quenching method, exhibiting near-infrared photoluminescence and photodarkening properties. The absorption and PL peak wavelengths blue-shift as SrO concentration increases, attributed to an increasing bandgap by incorporation of Sr2+ ions. Pb1-xSrxSe quantum dots embedded in LAS glass with 2.0 mol % SrO demonstrate the highest photoluminescence quantum yield.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Ceramics
Giulia Alves dos Santos, Renato Grigolon Capelo, Chao Liu, Danilo Manzani
Summary: This study presents a method for synthesizing luminescent CdS QDs in a phosphate glass and controlling their growth through heat treatments. Quasi-spherical QDs with an average size of 8.1 nm were obtained under excitation at 340 nm, emitting at 550 nm. The emission intensity significantly decreased and a 10 nm Stokes shift was observed after heat treatments.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Wenke Li, Xiujian Zhao, Francois-Xavier Coudert, Chao Liu
Summary: In this study, the effects of calcium on the atomic and electronic structures of CdSe quantum dots (QDs) were investigated. It was found that the increase in CaO content in glass breaks the linkage between Na and O atoms, but interactions between Cd atoms and nonbridging oxygen atoms remain intact. CdSe QDs promote the migration of Na atoms to the interface and even the interior of QDs, while Ca atoms are only found at the QD/glass interface and in glass matrices far from the QDs. However, the influence of CdSe QDs on the glass structure is limited to a short range near the interface according to the radial concentration distribution. The increase in CaO content also results in an increase in the highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gap of CdSe QD-embedded glasses. These findings contribute to a better understanding of the effects of calcium on the structural and luminescence properties of CdSe QD-embedded glasses.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Ceramics
Byoungjin So, Yicong Ding, Rene Limbach, Jae-Young Pyo, Guilherme N. B. M. de Macedo, Kai Li, Christian Friebe, Felix Otto, Maximilian Schaal, Chao Liu, Jong Heo, Lothar Wondraczek
Summary: The elastic properties of manganese aluminosilicate glasses are studied, and it is found that the presence of MnO6 units has a significant effect on the material stiffness.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Engineering, Environmental
Wenchao Zhang, Ying Ye, Yuzhou Hu, Kai Li, Chao Liu
Summary: Cesium lead halide perovskite nanocrystals have unique optoelectronic properties and are widely used in various fields. Embedding them into glass matrices enhances their thermal and chemical stabilities. However, these nanocrystals are still sensitive to intense light irradiation, which limits their applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Suliman Eltayeb Elhadi, Chao Liu, Hamza Adam Haroon
Summary: The successful synthesis of europium-gadolinium co-doped titanium dioxide luminescence thin films using the sol-gel dip-coating method followed by thermal annealing was studied. The higher Eu3+ ions concentration affected the structure and optical properties of the thin films, which were characterized using various techniques. The thin films showed intense red and orange-red emission from Eu3+ ions and a reduction in the optical bandgap energy with increasing Eu3+ ion concentration.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Ceramics
Sihao Wang, Yunlan Guo, Chao Liu
Summary: Photo-catalytic active glass-ceramics hold great potential for addressing environmental issues and offer advantages compared to traditional photo-catalysts. The photo-catalytic properties of these glass-ceramics depend on the presence of photo-catalytic nanocrystals embedded within. Zn2TiO4, a stable intermediate phase of the TiO2-ZnO system, exhibits comparable photo-catalytic activities as traditional photo-catalysts TiO2 and ZnO. In this study, colorless and highly transparent glass-ceramics containing Zn2TiO4 nanocrystals were successfully prepared and their effects on microstructure, mechanical properties, photo-catalytic activities, and recyclability were investigated. The embedded Zn2TiO4 nanocrystals were found to be photo-catalytically active and efficient in degrading organic dyes, suggesting promising applications in organic pollutant degradation for glass-ceramics containing photo-catalytic nanocrystals.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Wenkai Gao, Jicheng Zhang, Chenjie Ji, Luyao Li, Jing Wang, Chao Liu, Jian Ruan, Jianjun Han
Summary: ZnO-(100-x) B2O3 (x = 45-64 mol%) glass-ceramics for ULTCC applications were prepared and studied for their crystallization behavior, sintering mechanism, microstructure and microwave dielectric properties. It was found that zinc boron binary glasses can be formed in the range of 45-73 mol% ZnO content, with 55 mol% ZnO content showing the highest glass-forming ability. The formation of Zn4B6O13 crystal in the glass at a lower temperature than in ceramics, along with the refinement of secondary structure, improved the microwave dielectric properties. The 55 ZnO -45 B2O3 glass-ceramic sintered at 640 degrees C for 5 h exhibited the optimum microwave dielectric properties, as well as high Vickers hardness and good chemical compatibility with Ag or Al electrode, making it a good candidate for ULTCC substrate materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Kai Li, Wenchao Zhang, Luyue Niu, Ying Ye, Jing Ren, Chao Liu
Summary: In this study, inorganic lead-free cesium manganese halide nanocrystals embedded glasses were synthesized for the first time. These glasses exhibited red photoluminescence with broad PL band, tunable photoluminescence from red to green, and outstanding long-term stabilities. Moreover, they also showed highly efficient radioluminescence and stability against high energy irradiation, making them promising for applications in light-emitting diodes and scintillators.
Article
Chemistry, Physical
Rongqing Jiang, Hanwei Wu, Danilo Manzani, Wenchao Zhang, Chao Liu
Summary: In this study, CdSe quantum dots (QDs) with tunable and narrow band intrinsic photoluminescence (PL) were precipitated in silicate glasses by adjusting the heat-treatment temperatures. Analysis revealed that the changes in PL properties were induced by the transformation of surface defects during heat-treatment. The relationship between surface defects and PL properties of CdSe QDs was uncovered, which facilitates their applications in LEDs, backlight displays, and lasers.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Wenchao Zhang, Jingjing Liu, Chao Liu
Summary: Lead sulfide quantum dots (PbS QDs) show unique performance in the near-infrared (NIR) range and can be in-situ precipitated in glass to improve stability and be compatible with silicon photonics. The absorption cross sections of PbS QDs at 1040 nm are found to be 4-13 x 10(-16) cm(2), with bi-and tri-exciton lifetimes of -60 and -10 ps, respectively. Furthermore, the study demonstrates broadband net gain in the 1500-1600 nm range and achieves a maximum gain time of around 20 ps and a gain coefficient of > 120 cm(-1) in single PbS QDs embedded glass. These findings are important for applications in fiber amplifiers, NIR lasers, and high-capacity telecommunication.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Juan Liu, Jingjing Liu, Wenchao Zhang, Kai Li, Chao Liu
Summary: Lead chalcogenide quantum dots with controlled composition, size, and optical properties are obtained in glasses through precipitation and thermal treatment. The addition of chalcogen elements in the glasses and the adjustment of heat-treatment conditions enable modulation of the properties of PbSexS1-x quantum dots. Increasing the concentration of S in the glasses reduces the relative fraction of Se in the quantum dots, while higher heat-treatment temperatures promote the enrichment of Se in the quantum dots. These alloyed quantum dots exhibit improved photoluminescence quantum yields and enhanced resistance to thermal quenching.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Jingjing Liu, Jiahui Wei, Chao Liu
Summary: Cooling rate has a significant effect on the structures and properties of glasses, potentially altering their chemical, physical, and mechanical properties, as well as their crystallization behaviors. This study investigates the impact of cooling rate on the crystallization and optical properties of glasses used to precipitate semiconductor nanocrystals, using sodium zinc silicate glasses as a typical example.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Yuzhou Hu, Ying Ye, Wenchao Zhang, Kai Li, Yao Zhou, Yudong Zhang, Zhao Deng, Jianjun Han, Xiujian Zhao, Chao Liu
Summary: Precise and efficient patterning of light-emitting structures in high resolution and full-color light-emitting diodes is achieved by light-induced inverted patterning of nanocrystals in glasses for micro-light-emitting diodes. This method involves the use of ultrafast laser pulse to induce structural destruction and amorphization of nanocrystals in glasses, resulting in inverted luminescent patterns. The high-throughput patterning of micrometer-scale, thermally stable, and highly photoluminescent structures in nanocrystals embedded glass provides a novel way to fabricate high-performance and ultrahigh-resolution color conversion layers for micrometer-scale light-emitting diodes.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Ying Ye, Kai Li, Luyue Niu, Jing Ren, Chao Liu
Summary: In this study, all-inorganic Cs3CdBr5 nanocrystals (NCs) were precipitated in glass with the incorporation of Mn2+. The introduction of Mn2+ acted as a nucleation agent, promoting the growth and improving the optical properties of Cs3CdBr5 NCs embedded in glass. It was found that the [MnBr4]-[MnBr4] structural units were strongly coupled in Cs3Cd1-xMnxBr5 NCs, resulting in efficient energy transfer and dual-band emission. The temperature-dependence of the emission from the [MnBr4] unit and [MnBr4]-[MnBr4] couples enabled high-sensitive temperature sensing from Cs3Cd1-xMnxBr5 NCs embedded in glasses.
ADVANCED OPTICAL MATERIALS
(2023)
