Article
Chemistry, Applied
Jiangyue Su, Ran Pang, Haiyan Wu, Shangwei Wang, Tao Tan, Weihong Yuan, Su Zhang, Lihong Jiang, Da Li, Chengyu Li, Hongjie Zhang
Summary: A series of novel red-emitting BaLiZn3(BO3)(3):Eu3+ phosphors were synthesized and systematically investigated. The phosphors can be excited by near ultraviolet and blue light to emit red light. The optimal doping concentration is 3 mol% and the phosphors exhibit good thermal stability.
JOURNAL OF RARE EARTHS
(2022)
Article
Materials Science, Ceramics
Wasim Ullah Khan, Waheed Ullah Khan, Zhiqi Ye, Mebrouka Boubeche, Tian Shi, Dilfaraz Khan, Yueli Zhang
Summary: A series of Sm3+-activated Ca3Gd(AlO)3(BO3)4 red-emitting phosphors were prepared and characterized. The optimal doping concentration of 4mol% showed excellent luminescent and thermal stability properties. Ultimately, the investigated phosphor demonstrated excellent chemical stability.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Ka Ding, A. Siru, Shuo Pang, Leyan Shan, Yaqi Zhang, Pengfei Sun, Bin Deng, Ruijin Yu
Summary: A novel red-emitting phosphor tantalate Ca2YTaO6:Eu3+ was synthesized with high color purity and thermal stability, showing potential applications in white light-emitting diodes (w-LEDs).
JOURNAL OF RARE EARTHS
(2021)
Article
Materials Science, Multidisciplinary
Wei Xie, Junhao Li, Haiyong Ni, Qiuhong Zhang
Summary: Novel red emitting phosphors containing Eu3+ ions were synthesized and studied for their optical properties in this work. The doping concentration of Eu3+ ions was optimized to 12% to maximize the optical performance of the red emitting phosphors. The investigation also revealed the thermal quenching behavior of the phosphor, showing potential for near-UV excited warm WLEDs.
Article
Chemistry, Physical
Wasim Ullah Khan, Waheed Ullah Khan, Yan Peng, Zhiyuan Cheng, Tawfik A. Saleh, Yueli Zhang
Summary: Ce3+ ions effectively sensitize Sm3+ ions via energy transfer, enhancing the red emission intensity in mixed cation borate phosphors, which could potentially advance the development of white light-emitting diodes (WLEDs).
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Haiyan Wu, Guang Zhu, Jian Zhang, Hui Xie, Tao Tan, Yan Gao, Lihong Jiang, Chengyu Li, Hongjie Zhang
Summary: A new type of narrow-band red phosphor LKTGO:Mn4+ was synthesized, which has a wide excitation band and strong red emission. It can be effectively excited by near ultraviolet (n-UV) and blue light, making it suitable for blue InGaN chip excitation. The LKTGO:Mn4+ phosphor shows potential applications in warm white LEDs.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Spectroscopy
P. Vinodkumar, Sitakanta Panda, G. Jaiganesh, R. K. Padhi, U. Madhusoodanan, B. S. Panigrahi
Summary: A single-component white-light emitting phosphor SrBPO5: Ce3+, Dy3+ was prepared with high color purity and thermal stability through high temperature solid state reaction. The presence of Ce3+ along with Dy3+ resulted in efficient energy transfer and enhancement of Dy3+ luminescence towards white light emission. Energy transfer and thermal stability were confirmed through various studies including temperature-dependent photoluminescence and SEM imaging.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Inorganic & Nuclear
Sunggeun Shim, Woon Bae Park, Minseuk Kim, Jin-Woong Lee, Satendra Pal Singh, Kee-Sun Sohn
Summary: The novel KGaS2 phosphor host fills the cyan gap in phosphor-converted white light-emitting diodes (pc-wLEDs) with optimized composition and excellent photoluminescence properties. It performs much better under near-UV excitation compared to blue excitation, making it suitable for pc-wLED applications.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
O. Shantajit Singh, Ranjoy Wangkhem, N. Yaiphaba, Th David Singh, N. Shanta Singh
Summary: Bi3+-sensitized Gd2O3:Eu3+ phosphors were synthesized hydrothermally, and the lattice substitution of Bi3+ in Gd2O3 resulted in efficient energy transfer to the excited states of Eu3+. The color emission can be tuned by changing the activator concentration.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Ranyun Wu, Yingmeng Liu, Sanlue Hu, Pengfei Fu, Zewen Xiao
Summary: Through rational material design, a red-emitting Cs2PtCl6 phosphor has been developed and applied in white LEDs, achieving a high color rendering index and standard white light production.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shuxin Chen, Jidong Lin, Song Zheng, Yuanhui Zheng, Daqin Chen
Summary: High-quality backlit display requires color-converting materials. Metal halide perovskites (MHPs) with full spectral tunability and high color purity have shown potential in wide-color-gamut display. However, naked MHPs suffer from stability issues. In this study, amorphous-glass-protected CsPbX3 quantum dots (QDs) were prepared, which showed high photoluminescence quantum yields (PLQYs) and stability. The CsPbX3@glass QDs were used to construct white light-emitting diodes (wLEDs) and a prototype display device with vivid and wide-color-gamut features.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Nan Ma, Wei Li, Balaji Devakumar, Zongjie Zhang, Xiaoyong Huang
Summary: A novel efficient far-red-emitting phosphor CMLW:Mn4 for plant cultivation LED lighting was demonstrated, showing broad excitation bands and high internal quantum efficiency. The phosphors could be efficiently excited by near-ultraviolet and blue light, emitting intense far-red light suitable for indoor plant cultivation.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Siling Liu, Lin Zeng, Zhou Zhao, Miao Deng, Xiaomeng Wang, Wentao Zhang
Summary: A single-component Ca3YAl3B4O15 (CYAB):Dy3+, Eu3+ phosphor was synthesized and codoped to achieve warm white emission. The results showed that the codoped samples had the standard CYAB structure without impurity phases. The dual emission of Dy3+ and Eu3+ enabled the realization of warm white light, and the correlated color temperature decreased with increased Eu3+ content. The single-component Dy3+/Eu3+ codoped CYAB phosphor has potential applications in UV excited warm white LEDs.
CERAMICS INTERNATIONAL
(2022)
Article
Polymer Science
Xiaoshuai Zhang, Teng Li, Cong Yu, Weiqiang Miao, Hui Wang, Yiwei Fu, Bojun Zhou, Dan Liu, Wei Li, Tao Wang
Summary: Efficient single-layer white-light emitting diodes (WLEDs) are achieved by doping a small amount of a red polymer into the perovskite nanocrystals matrix. The emission color of the WLEDs can be tuned from cold white-light to warm white-light by adjusting the weight ratio of the nanocrystals to the polymer. With a low voltage, the WLEDs exhibit standard white-light emission with high luminance and external quantum efficiency.
Article
Chemistry, Inorganic & Nuclear
Tianqing Zhang, Xiliang Jiang, Rujia Chen, Bingyan Liu, Weiling Yang, Ce Li, Hai Lin, Huisheng Liu, Chun Li, Fanming Zeng, Zhongmin Su
Summary: In this study, a narrow-band blue phosphor BaZnAl10O17:Eu2+ with excellent emission performance was discovered, which is essential for developing high-performance LCDs. The synthesized phosphor exhibits low thermal quenching behavior, with only minimal loss in emission intensity at high temperatures. The prepared white LED device using this narrow-band blue-emitting phosphor emits high-brightness white light with a wide color gamut, showing its potential application value in white light-emitting diodes.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Optics
Kai Han, Jianwei Qiao, Shuai Zhang, Binbin Su, Bibo Lou, Chong-Geng Ma, Zhiguo Xia
Summary: A design method is established by considering charge-transfer and recombination efficiencies in doped MHPs materials, improving the luminescence performance of MHP scintillators. Alloying Te4+ into Cs2ZrCl6 significantly enhances scintillation performance, including increased light yield and detection limit, as well as high-resolution X-ray imaging capabilities.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Physical
Yingze Zhu, Xuesong Wang, Jianwei Qiao, Maxim S. Molokeev, Hendrik C. Swart, Lixin Ning, Zhiguo Xia
Summary: To promote the development of NIR light sources, the researchers discovered a novel Eu2+-activated broadband NIR-emitting phosphor and investigated its design principles and mechanism using density functional theory calculations. The results showed that with an increase in the Ba/Sr atomic ratio, the emission band of Eu2+ red-shifted and the FWHM enlarged. The application of NIR phosphor-converted LEDs was demonstrated, indicating their potential in night-vision technology.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Binbin Su, Kai Han, Zhiguo Xia
Summary: This study reports the use of Mn2+-doped all-inorganic metal halide as an X-ray imaging scintillator, which exhibits high photoluminescence quantum yield, large Stokes shift, and strong X-ray absorption capability. The scintillation screen fabricated from this material shows good X-ray scintillation performance and stability, making it a promising candidate for high-energy radiation detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Zhiyu Yang, Tristan de Boer, Patrick M. Braun, Binbin Su, Qinyuan Zhang, Alexander Moewes, Zhiguo Xia
Summary: This study explores Eu2+-activated oxide-based double perovskites as red emitters with thermally stable photoluminescence for laser-driven lighting applications. The Sr3TaO5.5:Eu2+ ceramics demonstrate a red emission band and a constructed laser-driven white light wheel achieves a record luminous flux and excellent color rendering index.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jiance Jin, Kai Han, Yakun Hu, Zhiguo Xia
Summary: Metal halide scintillators with high light yield and sensitive detection are achieved by introducing Zn2+ into [TPPen](2)MnBr4. The introduction of Zn atoms enhances the light yield from 43,000 to 68,000 photons MeV-1 and decreases the detection limit from 696.9 nGy s(-1) to 204.1 nGy s(-1). X-ray imaging is realized using large-scale scintillator films made with TPPMZB or TPPMB, and the spatial resolution is improved from 4.6 to 11.2 lp mm(-1) after Zn2+ doping.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Lin Nie, Ting Wang, Xue Yu, Wei Gao, Qingpeng Peng, Zhiguo Xia, Jianbei Qiu, Siu Fung Yu, Xuhui Xu
Summary: Direct laser patterning allows precise tailoring of perovskites at the microscale, which is important for advanced optoelectronic devices. However, thermal ablation can lead to imprecise crystallization, limiting the resolution of the technique. This study demonstrates a method of crystallizing perovskite nanoparticles by photon effect, avoiding undesired crystallization and destruction. This technique enables the production of high-transparency, high-resolution, and stable multicolor perovskite PVDF films, potentially applicable in flexible displays.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Yu Chen, Zhiyu Yang, Jiance Jin, Jianwei Qiao, Yuzhen Wang, Maxim S. Molokeev, Hendrik C. Swart, Zhiguo Xia
Summary: Exploring oxide-based red-emitting phosphors is important for improving the color rendering index and reducing the correlated color temperature of white-light-emitting diode (LED) lighting sources. This study synthesized a red-emitting Sr2LaGaO5:Eu2+ oxide phosphor and successfully achieved tunable emission by substituting Sr with Ba atoms. By mixing different colored phosphors, a white LED device with high color rendering index and low color-dependent temperature was fabricated.
CHEMISTRY OF MATERIALS
(2023)
Article
Optics
Taoze Wang, Yuzhen Wang, Weibin Chen, Zhiguo Xia
Summary: In this study, Na2SrGe6O14:Cr3+ (NSGO:Cr) glass ceramics (GC) with ultra-broad emission band and high EQE were fabricated. Yb3+ co-doping significantly enhanced Cr3+ -> Yb3+ energy transfer, leading to improved thermal stability. Furthermore, the encapsulant-free NIR GC-converted LED exhibited high output power and photoelectric conversion efficiency.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Yuzhen Wang, Gaochao Liu, Zhiguo Xia
Summary: This study successfully achieved near-infrared (NIR) II emission in a certain calcium gallium silicate crystal by designing and verifying the occupation of Cr4+ ions. The phosphor exhibited broadband NIR-II emission under red light excitation, with good temperature response and relative sensitivity.
LASER & PHOTONICS REVIEWS
(2023)
Editorial Material
Chemistry, Multidisciplinary
Kai Han, Zhiguo Xia
ACS CENTRAL SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Xinquan Zhou, Shuai Zhang, Kai Han, Jiance Jin, Yongsheng Sun, Zhiguo Xia
Summary: This article presents a platform that utilizes the interactions of self-trapped excitons, dopants, and defects to achieve tunable multimode luminescence and photochromism in metal halide perovskite CsCdCl3. The platform demonstrates improved photoluminescence quantum efficiency and the ability to statically and dynamically manipulate emissions through dopants and changing excitation wavelength/irradiation time. The presence of carrier trapping and de-trapping processes also leads to bright orange-near-infrared persistent luminescence and photochromic behaviors.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Optics
Weibin Chen, Yuzhen Wang, Jian Xu, Xinrong Chen, Ole B. Jensen, Qinyuan Zhang, Zhiguo Xia
Summary: This study develops a hot-pressing synthesis route to obtain high-performance red-emitting cordierite ceramic, which demonstrates exceptional saturation threshold and luminous exitance. The innovation of solid-state synthesis from glass to bulk converters meets the demanding requirements of advanced warm white laser lighting.
LASER & PHOTONICS REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Yakun Hu, Jiance Jin, Kai Han, Zhiguo Xia
Summary: Doping Cu+ in Rb2AgBr3 leads to cold-white light emission at room temperature without changing the spectral profiles. The Cu+ incorporation significantly enhances the photoluminescence quantum efficiency and scintillation performance. By mixing Cu+ doped Rb2AgBr3 scintillators with polydimethylsiloxane, a large scintillator film with high spatial resolution for X-ray imaging is achieved.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Bohan Li, Jiance Jin, Meijuan Yin, Kai Han, Yuchi Zhang, Xinlei Zhang, Anran Zhang, Zhiguo Xia, Yan Xu
Summary: High-performance glass-ceramic (G-C) scintillators with improved light yields and lower detection limits are developed from 0D hybrid metal halide (HMH) glass through in situ recrystallization. This opens up possibilities for phase transformation engineering in 0D HMHs and enables their application in large-area scintillation screens.
Article
Chemistry, Multidisciplinary
Meijuan Yin, Bohan Li, Zishuo Yi, Yuchi Zhang, Zhiguo Xia, Yan Xu
Summary: This study reports four zero-dimensional Sb-based halide glasses that exhibit reversible phase transition and modulated luminescence properties. The findings offer potential applications in information encryption and anti-counterfeiting.
CHEMICAL COMMUNICATIONS
(2023)
