Wenzhi Sun

Ludong University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Chengyu Li

Beijing National Laboratory for Molecular Sciences

Ran Pang

Chinese Academy of Sciences

Lihong Jiang

Chinese Academy of Sciences

Yonglei Jia

National University of Defense Technology

Su Zhang

Chinese Academy of Sciences

Jipeng Fu

China Jiliang University

Haifeng Li

University of Macau

Da Li

Chinese Academy of Sciences

Tengfei Ma

Nankai University

Hongwu Zhang

Ludong University

Cooperative Institutions

Chinese Academy of Sciences

Changchun Institute of Applied Chemistry

Ludong University

University of Science and Technology of China

Liaocheng University

University of Chinese Academy of Sciences

State Council of the People's Republic of China

Shandong University

Yantai University

Nanjing University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Investigation on Luminescence Properties of a Long Afterglow Phosphor Ca₂SnO₄:Tm³⁺

Chemistry - An Asian Journal (2015)

Haifeng Li Wenzhi Sun Yonglei Jia Tengfei Ma Jipeng Fu

A series of new long afterglow phosphors Ca2 SnO4:xTm(3+) were synthesized by using traditional solid-state reactions. XRD measurements and Rietveld refinement revealed that the incorporation of the Tm(3+) dopants generated no second phase other than the original one of Ca2 SnO4, which indicated that the dopants completely merged into the host. The corresponding optical properties were further systematically studied by photoluminescence, phosphorescence, and thermoluminescence (TL) spectroscopy. The results show that the Tm(3+)-related defects account for the bright bluish green afterglow emission from the characteristic f-f transitions of Tm(3+) ions. The bluish green long-lasting phosphorescence could be observed for 5 h by the naked eye in a dark environment after the end of UV irradiation. Two TL peaks at 325 and 349 K from the TL curves were adopted to calculate the depth of the traps, which were 0.45 and 0.78 eV, respectively. The mechanism of the long afterglow emission was also explored.

Persistent luminescence

10.1002/asia.201500580

Cite

Citations (14)

Design of a defect‐induced orange persistent luminescence phosphor BaZnGeO₄:Bi³⁺

Journal of the American Ceramic Society (2021)

Wenzhi Sun Mengmeng Jiao Liyan Fan Ruijuan Zhang Xinxin Zhang

Abstract We report a novel bright orange persistent luminescence (PersL) phosphor BaZnGeO 4 :Bi 3+ with broad emission and PersL spectra. Its crystal structure, photoluminescence (PL) spectra, thermoluminescence (TL) spectra and PersL spectra were investigated in detail. The two emission bands at 440 nm and 595 nm originate from Bi 3+ ions in normal Ba 2+ sites (Bi1) and Ba 2+ sites close to vacancy defects (Bi2), respectively. The introduction of and defects improves the emission intensity of Bi2 more than that of Bi1, demonstrating that Bi2 is related to the vacancy defects. The orange emission and PersL properties of BZGO:Bi 3+ can be improved when a little and defects are introduced, because the introduction of and defects makes it easier for Bi 3+ to enter in Ba 2+ sites; and for PersL, and defects can perform as the effective trap centers to capture more charges, which is beneficial for PersL. BZGO:Bi 3+ has quite good thermal stability, and the bright orange PersL can be observed by the naked eye for 1 h. Finally, a feasible PersL mechanism of BZGO:Bi 3+ was proposed to clarify the PersL‐generation process.

Persistent luminescence

10.1111/jace.18232

Cite

Citations (11)

Luminescence properties of a novel reddish orange long-lasting phosphorescence phosphor Zn₂P₂O₇:Sm³⁺,Li⁺

RSC Advances (2015)

Ran Pang Wenzhi Sun Jipeng Fu Haifeng Li Yonglei Jia

A new reddish orange long-lasting phosphor was synthesized via incorporating Li⁺ into Sm³⁺ activated Zn₂P₂O₇ to modify its trap levels.

Persistent luminescence

10.1039/c5ra14589a

Cite

Citations (28)

Electrical properties and luminescence properties of 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3-xSm lead-free ceramics

Journal of Advanced Ceramics (2020)

Wei Li Jigong Hao Wei Li Juan Du Peng Fu

Abstract In this paper, Sm-doped 0.96(K 0.48 Na 0.52 )(Nb 0.95 Sb 0.05 )–0.04Bi 0.5 (Na 0.82 K 0.18 ) 0.5 ZrO 3 (abbreviated as KNSN–0.04BNKZ) lead-free piezoelectric ceramics were prepared by conventional solid-state sintering method and the effects of Sm 2 O 3 on the phase structure, microstructure, electrical and luminescent properties of KNSN–0.04BNKZ potteries were studied. Results revealed that a single solid solution phase with pseudo-cubic perovskite structure was formed between KNSN–0.04BNKZ and Sm 2 O 3 . Existence of weak dielectric/ferroelectric properties with a diffuse dielectric anomaly and slim P – E hysteresis loops of the Sm-doped KNSN–0.04BNKZ demonstrated the ferroelectric relaxor behavior of the KNNS–0.04BNKZ– x Sm ceramics. Accordingly, the temperature stability and fatigue behavior of the modified ceramics were significantly improved. It was found that the KNSN–0.04BNKZ ceramics with 0.002 mol Sm addition exhibited nearly temperature independent properties and fatigue-free behavior. Moreover, Sm-modified KNSN–0.04BNKZ exhibits a bright photoluminescence with a strong orange emission under visible light irradiation. As a material with both electrical and luminescent properties, it has good application prospect in future optoelectronic components by integrating its luminescent and electrical properties.

Hysteresis

10.1007/s40145-019-0349-x

Cite

Citations (31)

Study of a color-tunable long afterglow phosphor Gd_1.5Y_1.5Ga₃Al₂O₁₂:Tb³⁺: luminescence properties and mechanism

RSC Advances (2020)

Tengfei Ma Haifeng Li Su Zhang Wenzhi Sun Zhiqiang Cheng

Long afterglow phosphors play a significant role in practical applications.

10.1039/d0ra02942d

Cite

Citations (18)

Energy transfer and luminescence properties of a green-to-red color tunable phosphor Sr8MgY(PO4)7:Tb3+,Eu3+

Journal of Materials Science Materials in Electronics (2019)

Wenzhi Sun Huaiyong Li Baohui Li Juan Du Jigong Hao

Red Color

Thermal Stability

10.1007/s10854-019-01272-6

Cite

Citations (13)

Synthesis, structure, and luminescence properties of Europium/Cerium/Terbium doped strontium-anorthite-type green phosphor for solid state lighting

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy (2023)

Shuo Yang Wenzhi Sun Qinfeng Xu Chuan‐Lu Yang Shufang Zhang

Europium

Terbium

Rietveld Refinement

Solid-State Lighting

Powder Diffraction

10.1016/j.saa.2023.122402

Cite

Citations (3)

Synthesis and photoluminescence properties of novel red-emitting Ca14Mg2(SiO4)8:Eu3+/Sm3+ phosphors

Journal of Rare Earths (2015)

Wenzhi Sun Ran Pang Haifeng Li Yonglei Jia Su Zhang

10.1016/s1002-0721(14)60489-0

Cite

Citations (14)

Influence of charge compensators on photoluminescence properties of Sr2CeO4:Eu3+

Materials Letters (2014)

Haifeng Li Yonglei Jia Wenzhi Sun Jipeng Fu Ran Pang

Charge carrier

10.1016/j.matlet.2014.10.070

Cite

Citations (17)

ChemInform Abstract: Synthesis and Photoluminescence Properties of a Red‐Emitting Phosphor Sr₉Mg_1.5(PO₄)₇:Eu³⁺.

ChemInform (2016)

Wenzhi Sun Yonglei Jia Tengfei Ma Da Li Haifeng Li

Abstract Sr 9 Mg 1.5 (PO 4 ) 7 :xEu 3+ (x = 0—0.8) phosphor is prepared by firing stoichiometric amounts of SrCO 3 , Mg(OH) 2 ·MgCO 3 ·6H 2 O, NH 4 H 2 PO 4 , and Eu 2 O 3 in air (1.

Stoichiometry

10.1002/chin.201622006

Cite

Citations (0)