闫君
博士、副教授
博士、副教授
办公电话:+86-10-51688483 | 电子邮件: yanjun@bjtu.edu.cn |
通讯地址:北京交通大学物理系 | 邮编:100044 |
闫君,北京交通大学,物理科学与工程学院,副教授。2012-2013,美国国家标准与技术研究院 (NIST)-中子衍射中心,联合培养博士生,2014年6月在北京航空航天大学获凝聚态物理博士学位,研究方向为磁电功能材料与器件(磁-力-热-电换能材料),钙钛矿发光材料与器件。
1、国家自然科学基金"青年基金,压力场驱动下反钙钛矿结构Mn3Cu1-xAxN(C) (A=Ge, Sn)化合物中巨相变熵—巨压热效应的研究,主持。
2、国家自然科学基金“重点”项目,准参量啁啾脉冲放大用非线性光学晶体材料的关键科学问题,参加。
3、国家自然科学基金“面上”项目,无标记光子晶体氯代气体传感器的研究,参加。
4、国家自然科学基金横向项目, 成像谱仪电场信号发生系统研制,主持。
5、中央高校基本科研业务费,反钙钛矿结构Mn3Cu1-xGe(Sn)xN化合物中巨压热效应研究,主持。
6、中央高校基本科研业务费,高效钙钛矿量子点光致发光材料制备,主持。
7、中央高校基本科研业务费,有机-无机杂化钙钛矿光伏材料能带、光电性能调控研究,主持。
本科生-《大学物理》
本科生-《近代物理实验》
研究生-《现代物理实验》1. Phase separation and combination of negative and positive magnetocaloric effects in Mn3Ga1−xAxC (A = Sn, Ge, Y), Journal of Alloys and Compounds, 2023, 930, 167376.(第一作者,通讯作者)
2. Magnetic Field-Oriented Electrical Transport Properties in Antiperovskite Mn3SnC, Physica Status Solidi-Rapid Research Letters, 2022, 2100614. (共同通讯作者)
3. Elastocaloric-like effect in strain-mediated Mn3SnC/PZT magnetoelectric hetero-composite for solid-state refrigeration, Acta Materialia, 2022, 237, 118154. (共同通讯作者)
4. Limitations of scaling laws for determining the order of magnetic phase transitions in antiperovskite materials, Journal of Magnetism and Magnetic Materials, 2022, 563, 169945. (第一作者,通讯作者)
5. The effects of Tb doping on the negative and positive magnetocaloric effects of Mn3Ga1−xTbxC (0.02 ≤ x ≤ 0.05), Journal of Applied Physics, 2022, 132, 135108. (共同通讯作者)
6. Table-like magnetocaloric effect around room temperature of antiperovskite composite materials based on Mn3Sn1-xGaxC, Materials Today Communications, 2021, 27, 102379. (共同通讯作者)
7. Gradient band gap perovskite fims with multiple photoluminescence peaks, Optical Materials, 2020, 99, 109513.(第一作者)
8. CH3NH3Br solution as a novel platform for the selective fuorescence detection of Pb2+ ions, Scientific Reports, 2019, 9, 15840.(第一作者)
9. The influence of combination of the first-order and second-order phase transitions on magnetocaloric effects in Mn3Cu1-xFexN, Solid State Communications, 2018, 07,282, 33-37.(第一作者)
10. Influences of organic cation and hydrochloric acid additive on the morphology and photoluminescence of HC(NH2)2PbBr3 films. Optical Materials, 2017, 73, 736-741.(第一作者, 通讯作者)
11. Improving the Photoluminescence Properties of Perovskite CH3NH3PbBr3-xClx Films by Modulating Organic Cation and Chlorine Concentrations. ACS Appl. Mater. Interfaces. 2016, 8, 12756−12763.(第一作者, 共同通讯作者)
12. Effect of the modulating of organic content on optical properties of single-crystal perovskite, Optical Materials, 2016, 62, 273-278.(共同通讯作者)
13. Effect of modulating the molar ratio of organic to inorganic content on morphology, optical absorption and photoluminescence of perovskite CH3NH3PbBr3 films, Appl. Surf. Sci. 2015, 351, 1191–1196.(第一作者, 共同通讯作者)
14. Optical band gap transition from direct to indirect induced by organic content of CH3NH3PbI3 perovskite films, Appl. Phys. Lett. 2015, 107, 091904-1-4.(共同通讯作者)
15. Relationship between Spin Ordering, Entropy, and Anomalous Lattice Variation in Mn3Sn1−εSiεC1−δ Compounds. Inorg. Chem. 2014, 53 (4), 2317–2324. (第一作者)
16. Phase transitions and Magnetocaloric effect in Mn3Cu0.89N0.96. Acta Materialia, 2014, 74, 58-65. (第一作者)
17. Study of structure of Mn3Cu0.5Ge0.5N/Cu composite with nearly zero thermal expansion behavior around room temperature. Scripta Mater. 2014, 84-85, 19-22. (第一作者)
1. 太阳能光伏发电系统和制备方法,陈云琳,王佶,闫君,2017.12,ZL201619017688.1。
2. 一种具有梯度能带结构的有机-无机杂化钙钛矿MAPbBr3材料及其制备方法,闫君,陈云琳,柯笑晗,张翱,张冰,2017.05,ZL201510260582.1。
3. Mn基反钙钛矿化合物Mn3Sn1-xRxC的制备方法,魏诗杰,闫君,蒋丛稷,梁鹏利,2022.04,ZL202110104746.7。
中国材料研究学会科学技术奖:二等奖,反钙钛矿磁性金属间化合物的多功能物性研究, 王聪,孙莹,史可文,邓司浩,闫君,褚立华,王蕾(2020.08)。