Article
Chemistry, Multidisciplinary
Jinshu Huang, Long Yan, Songbin Liu, Nan Song, Qinyuan Zhang, Bo Zhou
Summary: A novel mechanistic strategy is reported for enabling orthogonal upconversion emissions through energy migration in a simple core-shell nanostructure. By constructing a migratory ytterbium-sublattice shell layer outside the luminescent erbium matrix, the population of erbium emitters at intermediate energy levels can be finely manipulated to achieve red-to-green color-switchable output under separate excitation wavelengths. Additionally, tuning the excitation pulse width results in a gradual red-to-green color change.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Fuhua Huang, Niusha Bagheri, Li Wang, Hans Agren, Jinglai Zhang, Rui Pu, Qiuqiang Zhan, Yuhan Jing, Wen Xu, Jerker Widengren, Haichun Liu
Summary: Lanthanide upconversion nanoparticles (UCNPs) have been extensively studied for their applications in healthcare, energy, and information technology. The use of a core-shell structure is an important approach to enhance the brightness and functionality of UCNPs. However, the issue of cation intermixing at the interface of core-shell nanoparticles remains a challenge, and a facile method to control it is lacking.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Yanqing Hu, Shijie Yu, Xinyi Deng, Jiaqiang Zhou, Rui Zhang, Qiyue Shao
Summary: This research discovers the opposite temperature-dependence of upconversion luminescence (UCL) in active-shell and inert-shell nanocrystals. The UCL of active-shell nanocrystals is enhanced at elevated temperature, while the UCL of inert-shell nanocrystals declines. This phenomenon is mainly attributed to the gradually attenuated surface quenching effect induced by H2O molecules.
Article
Chemistry, Multidisciplinary
Mingye Ding, Songsong Cui, Liang Fang, Zixia Lin, Chunhua Lu, Xiaofei Yang
Summary: Here, we present a new strategy to tune the excitation and emission peaks of upconversion nanoparticles, enabling efficient upconversion emission in the first infrared biowindow. By constructing energy migration processes in a specific core-shell-shell nanoarchitecture, the efficiency of the emission is greatly enhanced.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Songbin Liu, Zhengce An, Jinshu Huang, Bo Zhou
Summary: In this research, an ideal design of sensitizing lithium sublattice core-shell nanocrystals was reported to achieve efficient NIR-II emission from a set of lanthanide emitters, including Er3+, Tm3+, Ho3+, Pr3+, and Nd3+. The quantum yield of Er3+ emission at 1.5 μm was greatly enhanced by manipulating the energy transfer via Er3+-Ce3+ cross-relaxation, reaching a highest value of 35.74% under 980 nm excitation. The single-particle level 808 nm responsive efficient NIR-II emission was enabled through rational core-shell-shell structure design. Moreover, the lithium-sublattice exhibited an obvious spectral Stark-splitting feature, which can be used for ultrasensitive NIR-II nanothermometry.
Article
Optics
Liping Wang, Long Yan, Zhiyuan Cai, Li He, Bo Zhou
Summary: Photon upconversion of lanthanides is an important experimental strategy for achieving white light emission. By constructing a core-shell-shell nanostructure and using a lithium lanthanide fluoride matrix, absorption of excitation energy and subsequent upconversion luminescence can be enhanced. By combining interfacial energy transfer and cooperative sensitization upconversion, white light emission can be achieved.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Multidisciplinary
Hao Lin, Zhiyuan Cheng, Dekang Xu, Xuegang Zheng, Jun Ge, Liqin Xu, Ying Ma, Shenghong Yang, Yueli Zhang
Summary: The study successfully synthesized small-sized red-emitting UC nanoparticles, developed a novel mechanism for Ho-based red emission, and demonstrated potential biomedical applications in a mouse experiment.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Physical
Wei Gao, Yu Xing, Binhui Chen, Lin Shao, Jingjing Zhang, Xuewen Yan, Qingyan Han, Chengyun Zhang, Lin Liu, Jun Dong
Summary: Rare-earth-doped red upconversion nanocrystals (UCNPs) with NaErF4@NaYF4 core-shell structure and Yb3+ ion doping were successfully constructed to enhance red emission. The red upconversion emission intensity of NaErF4@ NaYF4 CS UCNPs doped with 15%Yb3+ ions in the core is nearly 202 times higher than that of NaErF4 UCNPs under 980 nm excitation wavelength, with a red/green emission intensity ratio of 18.7. The energy migration and energy back transfer processes were controlled through Yb3+ ion doping, significantly improving the red emission intensity of Er3+ ions in the NaErF4@NaYF4 CS UCNPs, which has potential applications in bioimaging and anti-counterfeiting.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Optics
Shaobo Cui, Li Tao, Wen Kiat Chan, Donglei Zhou, Zhongzheng Yu, Wen Xu
Summary: Lanthanide-doped luminescent nanocrystals have potential applications in the NIR-II imaging and biology sensors. This study investigates the concentration-dependent upconversion luminescence (UCL) and downconversion luminescence (DCL) mechanism in core-shell upconversion nanocrystals (UCNCs). The results show that the luminescence of UCNCs is influenced by the non-radiative rate between activators and the energy transfer rate. Dual-mode anti-counterfeiting imaging is successfully fabricated using UCNCs.
Article
Multidisciplinary Sciences
Yanxin Zhang, Rongrong Wen, Jialing Hu, Daoming Guan, Xiaochen Qiu, Yunxiang Zhang, Daniel S. Kohane, Qian Liu
Summary: Manipulating topological arrangement can enhance upconversion luminescence in inorganic optical nanosystems. The outside-in architecture produces the maximum upconversion luminescence, around 6 times brighter than the inside-out architecture at the single-particle level. Monte Carlo simulation suggests that topology-dependent energy migration favors the upconversion luminescence of the outside-in structure.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Enhui Wang, Wei Wang, Lujun Niu, Yansong Feng, Haifeng Zhao, Yongshi Luo, Ligong Zhang, Qiqing Li, Haoran Chen, Yulei Chang, Langping Tu, Hong Zhang, Jing Zuo
Summary: Recent advances have shown that impressive upconversion (UC) enhancement can be achieved in cryogenic Er3+-rich core-inert shell nanostructures, and further enhancement of UC intensity is desired. This study demonstrates that an active shell design can constantly benefit UC within a wide temperature range, achieving significant UC enhancement compared to core-inert shell structures. The enhancement is attributed to a temperature-dependent energy injection process from the active shell to the luminescent core. Additionally, the unique properties of the material enable a temperature-induced high-level encryption application with QR code.
ADVANCED OPTICAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Songbin Liu, Long Yan, Jinshu Huang, Qinyuan Zhang, Bo Zhou
Summary: Lanthanide-based upconversion nanomaterials have excellent properties and the emergence of multi-layer core-shell nanostructures provides a powerful tool for precise manipulation and functional integration. It offers unprecedented opportunities for energy transfer control, emission color modification, and new functionalities.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Materials Science, Ceramics
Taoxin Qi, Lei Lei
Summary: The energy transfer processes in the BaYF5-based core/shell/shell nanoparticles are comprehensively manipulated, leading to a significantly improved upconversion intensity. These nanoparticles also show potential for selective sensing of rhodamine B.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Huiming Liu, Long Yan, Jinshu Huang, Zhengce An, Wang Sheng, Bo Zhou
Summary: This study reports a new nanoplatform for improving the thermal sensitivity of nanothermometry through nonthermally coupled upconversion emissions. By observing the gradual decrease of Er3+ and rapid increase of Tm3+, a significant contrast in intensity ratio and emission colors can be achieved. Introducing Ce3+ further enhances the sensitivity and expands the range of thermochromic color change.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Chidharth Krishnaraj, Hannes Rijckaert, Himanshu Sekhar Jena, Pascal Van der Voort, Anna M. Kaczmarek
Summary: This study demonstrates the use of covalent organic frameworks (COFs) to encapsulate lanthanide nanoparticles, enabling them to function as both nanothermometers and catalysts. By utilizing the support of COF and the temperature measurement capabilities of lanthanide nanoparticles, local temperature monitoring during catalytic reactions is achieved.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Jingxie Xiong, Yifei Zhao, Jiaxi Zhu, Xiaoyan Yang, Xiaojun Kuang, Chun-Hai Wang, Qinyuan Zhang, Shi Ye
Summary: In this study, CaTiO3:Li+,Yb3+,Er3+ was chosen as a model to optically interpret a second-order phase transition induced by thermal-driven Li+ migration. The intensity pairwise ratios of the emission peaks of Er3+ versus temperature showed a continuous behavior with a break point at the ignition point of Li+ motion. The gap between the phase transition and Er3+ luminescence variation was bridged by the number variation of microstates, referring to the chemical environment around Er3+ ions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Yuanjing Wang, Yayun Zhou, Hong Ming, Yifei Zhao, Enhai Song, Qinyuan Zhang
Summary: The luminescence of Mn4+ non-equivalent doped fluoride is significantly enhanced via a heterovalent co-doping strategy, which improves stability and reduces quenching centers. A novel monochromatic multiplexing mode in the millisecond order is presented, with high efficiency and security for information applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Songbin Liu, Long Yan, Jinshu Huang, Qinyuan Zhang, Bo Zhou
Summary: Lanthanide-based upconversion nanomaterials have excellent properties and the emergence of multi-layer core-shell nanostructures provides a powerful tool for precise manipulation and functional integration. It offers unprecedented opportunities for energy transfer control, emission color modification, and new functionalities.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Chemistry, Physical
Xinglu Zhu, Yifei Zhao, Shuai Zhang, Junkun Wu, Dong Shao, Enhai Song, Qinyuan Zhang, Congling Yin, Shi Ye
Summary: The research reveals that antiferromagnetic and ferromagnetic interactions in CsMnF3 lead to emission peaks at 600 and 795 nm respectively. The competitive magnetic interactions result in long decay lifetimes at cryogenic temperatures and temperature-dependent decay trends for the emissions with distinct origins.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Multidisciplinary Sciences
Enhai Song, Meihua Chen, Zitao Chen, Yayun Zhou, Weijie Zhou, Hong-Tao Sun, Xianfeng Yang, Jiulin Gan, Shi Ye, Qinyuan Zhang
Summary: Photothermal sensing is crucial for smart wearable devices. Researchers have developed a dual-wavelength emitting material Li2ZnSiO4:Mn2+ and a wearable optical fibre temperature sensor, which demonstrates stable ratiometric temperature sensing in both contact and noncontact modes. The sensor integrated into a wearable mask shows great potential for detecting physiological thermal changes, making it suitable for wearable health monitoring.
NATURE COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Fanquan He, Enhai Song, Hui Chang, Yayun Zhou, Zhiguo Xia, Qinyuan Zhang
Summary: This study demonstrates the development of a highly efficient and stable broadband near-infrared emission phosphor Na3GaF6:Cr3+,Li+, which exhibits excellent emission performance, thermal stability, and photoelectric conversion efficiency. It also presents a special information encryption/decryption technology based on this phosphor, showing great potential in various applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Shuangli Dong, Yanqi Jia, Yao Ji, Qinyuan Zhang
Summary: By using the phase diagram method, we can predict the spectroscopic properties of Nd3+-doped laser glasses with different compositions and structures accurately, providing important insights for the design and explanation of commercial glasses.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Lei Wang, Enhai Song, Shuai Zhang, Xiaoshi Hou, Xiaohong Ji, Qinyuan Zhang
Summary: In this study, ultrathin erbium-doped molybdenum disulfide (MoS2) nanosheets with enhanced visible-light response were synthesized by a wet-chemical method. The enhanced visible-light response of the doped MoS2:Er nanosheets was demonstrated through photocatalytic performance and photocurrent response. The improved separation capability of photogenerated electron-hole pairs in the ultrathin MoS2:Er nanosheets was found to be responsible for the enhanced visible-light response. The work presents a developed universal and recyclable synthesis strategy for various metal-doped MoS2 nanosheets and their applications in photocatalysis and photodetection.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Lei Wang, Shuai Zhang, Long Yan, Xiaohong Ji, Qinyuan Zhang
Summary: The electronic and optical properties of two-dimensional transition metal dichalcogenides can be tuned by doping strategy. In this study, spiral and monolayer Er-doped WS2 (WE) flakes were synthesized using ErCl3, WO3, and S as precursors. The growth and properties of WE flakes were systematically studied. It was found that the morphology, size, and thickness of WE flakes can be regulated by adjusting the molar ratio of ErCl3/WO3 and the growth time. The ErCl3 precursor acted as both the promoter of WE flakes' growth and the driver of screw dislocations formation.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Ceramics
Shuangli Dong, Yanqi Jia, Yongbao Xiao, Qinyuan Zhang
Summary: Using the phase diagram approach, we investigated the composition-structure-property (CSP) relationships of Nd3+-doped ternary phosphate glasses. The spectroscopic properties, including the fluorescence lifetime, were accurately predicted with less than 10% error compared to experimental results. This study establishes CSP databases for over 1000 compositions, enriching the traditional laser glass database and providing guidance for future research.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Lei Wang, Xiaohong Ji, Qinyuan Zhang
Summary: Enhancing the near-infrared (NIR) photoresponse of molybdenum disulfide (MoS2) is achieved by synthesizing continuous Er-doped MoS2 (MoS2:Er) films. The enhanced NIR response is due to the absorption of Er3+ at 808 nm and 980 nm, as well as the increased traps introduced by Er-doping. The developed MoS2:Er/SiO2/p-Si heterojunction device has a fast response time, high detectivity, and wide bandwidth under 980 nm laser irradiation. The dark current can be suppressed for a period longer than 8 ms, and the heterojunction detectors can be used for NIR light communication.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Engineering, Electrical & Electronic
Jiqiao Yang, Yayun Zhou, Hong Ming, Enhai Song, Qinyuan Zhang
Summary: This study demonstrates the synthesis of an olivine phosphor, Mg2GeO4:Mn2+, with adjustable red and NIR emissions by doping Mn2+ ions into two different sites in the crystal structure. The red and NIR emissions can be easily controlled by varying the doping content. The study also explores the use of defect traps and ion codoping to achieve persistent luminescence and photostimulated luminescence. The combination of different materials presents a reliable anticounterfeiting and dynamic information encryption technique.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
X. H. Chen, E. H. Song, Y. Y. Zhou, F. Q. He, J. Q. Yang, Q. Y. Zhang
Summary: A highly efficient broadband near-infrared emission phosphor LiScGe2O6:Cr3+ has been developed, showing promising internal and external quantum efficiencies. The NIR LED based on this phosphor exhibits high output power and photoelectric conversion efficiency for night-vision applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Xiaoqi Liu, Puxian Xiong, Huailu Liu, Sheng Wu, Quan Liu, Yubin Fu, Zhijun Ma, Mingying Peng, Qinyuan Zhang
Summary: The luminescence characteristics of Bi3+ ions in solids have been extensively studied; however, the origin of extra spectra signals (D-bands) in some compounds remains unclear. In this work, a novel Bi3+-doped phosphor La3SnGa5O14:Bi3+ (LSGO:Bi3+) was successfully synthesized. The study revealed two emission bands centered at 360 and 540 nm, attributed to different electronic transitions of Bi3+ ions. An experimental and theoretical approach was used to confirm the origin of the D-band emission. This work contributes to a better understanding of luminescence mechanisms of Bi3+ doped phosphors and may lead to the development of new Bi3+ activated luminescent materials in the future.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)