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| 1 | Enhanced Ferroelectric Properties of Predominantly (100)-oriented Ca_(0.4)Sr_(0.6)Bi_4Ti_4O_(15) Thin Films on Pt/Ti/SiO_2/Si Substrates显示文摘Predominantly (100)-oriented Ca0.4Sr0.6Bi4Ti4O15 (C0.4S0.6BTi) thin films were prepared on Pt (111)/Ti/SiO2/Si substrates by a sol-gel method at annealing temperatures ranging from 650 to 850 ℃.The growth mode of the predominantly (100)-oriented C0.4S0.6 BTi thin films fabricated by the sequential layer annealing was discussed based on the structure evolution with the annealing temperature.The remnant polarization and coercive field of the C0.4S0.6 BTi film annealed at 800 ℃ are 16.1 μC/cm 2 and 85 kV/cm,respectively.No evident fatigue can be observed after 10 9 switching cycles. | Suhue Fan Quande Che Fengqing Zhang Ran Yu Wei Hu | 2010 | Journal of Materials Science & Technology2010，26，11： | 4 |
| 2 | In-situ transformation of Co(OH)_(2) into NH_(4)CoPO_(4)·H_(2)O on Co foil: 3D self-supported electrocatalyst with asymmetric local atomic and electronic structure for enhanced oxygen evolution reaction显示文摘Development of high efficient and stable water oxidation catalysts is essential for the realization of industrial water-splitting systems. Herein, a novel approach involving an in-situ transformation of Co(OH)2 nanosheets into NH4 CoPO4·H2 O nanoplates on Co foil is reported. As a 3 D self-supported oxygen revolution reaction(OER) electrocatalyst, the as-prepared NH4 CoPO4·H2 O/Co exhibits remarkable catalytic activity and exceptional stability. Specifically, it can deliver a current density of 10 m A cm^(-2) at a quite low overpotential of 254 m V with a small Tafel slope of 64.4 m V dec-1 in alkaline electrolyte. Through experimental study and theoretical analysis, the excellent OER performance can be attributed to enriched exposed active sites, favorable electron/proton transfer and mass transport, and its unique asymmetric local atomic and electronic structure. Thus, this present research not only provides a practicable in-situ transformation strategy to design 3 D self-supported electrocatalysts, but also enlightens a new way of developing transition-metal phosphates for efficient and stable water oxidation at atomic level. | Quande Che Xiaobin Xie Qian Ma Junpeng Wang Yuanna Zhu Ruixia Shi Ping Yang | 2020 | Journal of Energy Chemistry2020，29，12： | 2 |
| 3 | Nanoparticles-aided silver front contact paste for crystalline silicon solar cells显示文摘 | Quande Che Hongxing Yang Lin Lu Yuanhao Wang | 2013 | Journal of Materials Science: Materials in Electronics2013，，2： | 1 |
| 4 | Depositing Ag_(3)PO_(4) on WO_(3) hollow microspheres at room temperature for rapid photocatalytic degradation of Rhodamine B显示文摘A series of WO_(3) hollow microspheres decorated with Ag_(3)PO_(4) nanoparticles(APW)composites with Ag_(3)PO_(4):WO_(3) mass percentage of 20%(20APW),30%(30APW),40%(40APW)and 50%(APW)were successfully synthesized,characterized and tested for the degradation of the Rhodamine B(RhB)under 300 W xenon lamp radiation.The photocatalytic results showed that the photocatalytic degradation performances of WO_(3) hollow microspheres decorated with Ag_(3)PO_(4) nanoparticles on RhB were significantly enhanced,which were much higher than that of individual Ag_(3)PO_(4) and WO_(3).Especially for 40APW,RhB can be completely degraded within 10 min.The order of degradation efficiency is 20APW<50APW<30APW<40APW.The rate constant of 40APW(0.3902 min^(-1))is about 81.3 times that of WO_(3)(0.0048 min^(-1)).The diffuse reflection,photoluminescence and electrochemical impedance tests showed that the formation of Ag_(3)PO_(4)/WO_(3) composite structure broadened the light absorption range,reduced the recombination rate of photogenerated electrons and holes,and decreased the resistance to charge transfer,which are beneficial to the improvement of photocatalytic performance.The capture agent experiments were carried out with 40APW,which specified the primary role of h^(-1)and⋅O_(2)^(-)in the degradation of RhB.The formation of heterojunction between Ag_(3)PO_(4) and WO_(3) that effectively separates photogenerated electrons and holes are contributed to the enhancement of photocatalytic properties of APW composites. | Yaru Shang Yongping Cui Ruixia Shi Quande Che Aiyu Zhang Ping Yang | 2022 | Progress in Natural Science:Materials International2022，32，3： | 1 |
| 5 | Red color Sr_(2)NaMg_(2)V_(3)O_(12):Eu^(3+)phosphor with high thermal stability for w-LEDs显示文摘Sr_(2)NaMg_(2)V_(3)O_(12):xEu phosphors with uniform particle size/morphology and good dispersion can be synthesized via solid state reaction.Under the optimum excitation wavelength of ~340 nm,the Sr_(2)NaMg_(2)V_(3)O_(12):xEu phosphor displays the broad emission band at ~500 nm(blue-green emission,^(3)T_(1,2)→^(1)A_(1) transition of[VO_(4)]^(3-))and sharp emission peak at~610 nm(red emission,^(5)D_(0)→^(7)F_(2) transition of Eu^(3+)),respectively.With the Eu^(3+)content increasing,the emission intensity of[VO_(4)]^(3-)decreases gradually while the emission intensity of Eu^(3+)increases,which is ascribed to the energy transfer from[VO_(4)]^(3-)to Eu^(3+)ions.The decay time of[VO_(4)]^(3-)(-500 nm)increases gradually with the Eu^(3+)content increasing.The energy transfer efficiency and mechanism of[VO_(4)]^(3-)→Eu^(3+)ions were analyzed,respectively.The emission color of Sr_(2)NaMg_(2)V_(3)O_(12):xEu phosphor was regulated from green to red via altering the Eu^(3+)ions concentration.It is delightful for us that the white color emission can be just achieved when the Eu^(3+)content is 5 at%(x=0.05),and the w-LED can be assembled.By studying the luminescence temperature dependence and activation energy of Sr_(2)NaMg_(2)V_3O_(12):xEu phosphor,it is shown that the phosphor has good thermal stability.The Sr_(2)NaMg_(2)V_3O_(12):xEu powder is expected to be a new type of phosphor widely used in light and display areas. | Jinkai Li Bin Liu Guiyuan Liu Quande Che Yizhong Lu Zongming Liu | 2023 | Journal of Rare Earths2023，41，11： | 0 |
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