任俊凯，2022年获得意大利萨萨里大学化学科学与技术专业博士学位，然后前往德国埃朗根-纽伦堡大学化学系进行为期半年的学术访问；同年7月，获得瑞典Kempe Foundation奖学金，加入于默奥大学物理系开展博士后研究；2024年7月回国，加入西安电子科技大学物理学院，并入选教育部海外YC计划专项。目前，主要从事光电功能纳米材料性能与器件方面的研究工作，发表SCI论文50余篇，总被引频次大于1900次，h-因子为25，其中以第一/通讯作者身份发表SCI论文20篇，包括Adv. Sci., Adv. Opt. Mater. (2篇), Carbon, Chem. Mater., Nano Lett. (3篇)和Small Struct.等。主持国家自然科学基金青年项目、博士后面上项目、陕西省青年基金、中央高校基本科研业务费等项目，参与中国-以色列合作基金、意大利外交与国际合作部项目、欧盟“地平线2020”计划等项目。受邀担任Adv. Funct. Mater., Small, Carbon, Chem. Eng. J.等期刊审稿人，并兼任期刊Materials (MDPI) 和 Discover Mater. (Springer Nature) 客座编辑，Prog. Nat. Sci. Mater. Int. (Elsevier) 和Mater. Futures (IOP) 青年编委，Sci. Rep. (Springer Nature) 编委；三次获得英国物理学会杰出审稿人奖，两次获得德意志学术交流 (DAAD) 奖。

 

研究方向：光电功能纳米材料的制备、性能及其应用

• 碳纳米点、硅纳米点以及其他新型非金属荧光纳米点的结构设计和可控合成，及其在光电器件和生物医学中的应用；

• 石墨烯、氮化硼、过渡金属硫化物等二维材料的制备，及其在光电催化等领域中的应用；

• 通过构建透明杂化凝胶玻璃，实现光功能纳米材料的固体器件化应用。

 

科研项目：

1. 主持，国家自然科学基金青年项目（C类），高效率窄带宽近紫外发光碳点及其发光电化学池器件机理研究，62505238，30万元，2026年1月 – 2028年12月

2. 主持，中国博士后科学基金第78批面上项目，高效窄带紫外发光碳点及其电致发光器件研究，2025M783425，8万元，2025年8月 – 2026年7月

3. 主持，陕西省自然科学基础研究计划资助项目（一般青年），光功能碳点理论设计与定制化制备策略研究，2025JC-YBQN-159，5万元，2025年1月 – 2026年12月

4. 主持，中央高校基本科研业务费项目（自由探索），基于全光谱发光碳点的低蓝光危害白光LED研究，ZYTS25134，3万元，2025年1月 – 2025年12月

 

代表性论文：

22.   Zhuolin Liu, Jiaolong Liu*, Hui Bian, Xuejiao Zhou, Hongsheng Liang, Junkai Ren*, Peijun Zhang, Dan Qu, Fengxia Li, Siyu Zhang, Bing Wei*, and Hongjing Wu*. Lattice expansion/contraction triggered by etching-assisted strain engineering of cobalt sulfide heterostructures to boost electromagnetic wave absorption. Adv. Powder Mater., 2026, 5, 100367.

https://doi.org/10.1016/j.apmate.2025.100367

21.   Junkai Ren*, Menghong Li, Dan Qu, Jiaolong Liu*, Bing Wei, and Jia Wang*. High-efficiency and narrow-band near-ultraviolet carbon dots for high-color-purity light-emitting diodes. J. Colloid Interface Sci., 2025, 699, 138293.

https://doi.org/10.1016/j.jcis.2025.138293

20.   Menghong Li*, and Junkai Ren*. Quantitative methodology for assessing the dispersion of guest materials within a host matrix. Langmuir, 2025, 41, 11249.

https://doi.org/10.1021/acs.langmuir.5c01351

19.   Junkai Ren, Jiong Liu, Bing Wei, Wenfei Zhang*, Ludvig Edman*, and Jia Wang*. Deep-blue and narrowband emitting carbon dots from a sustainable precursor for random lasing. ACS Appl. Nano Mater., 2025, 8, 2472.

https://doi.org/10.1021/acsanm.4c06734

18.   Junkai Ren*, Jiaolong Liu, Dan Qu, Sikha Sanjay Menon, Bing Wei, and Jia Wang*. Dual-functional carbon dot films: Blue-light filtration and cyan-light conversion for healthier white light-emitting diodes. Nano Lett., 2025, 25, 2082.

https://doi.org/10.1021/acs.nanolett.4c06272

17.   Junkai Ren*, and Bing Wei*. Challenges in synthesizing hexagonal boron nitride “quantum” dots. Nano Lett., 2025, 25, 1745.

https://doi.org/10.1021/acs.nanolett.4c06031

16.   Junkai Ren, Kaiqi Ye, Henry Opoku, Zhiqiang Li, Ludvig Edman*, and Jia Wang*. Controlling the emission colour and chemical structure of carbon dots by catalysis-tuned conversion of ortho-aminophenol. Carbon, 2025, 231, 119706.

https://doi.org/10.1016/j.carbon.2024.119706

15.   Junkai Ren*, Dan Qu, Jiaolong Liu, Bing Wei, and Plinio Innocenzi*. Observing carbon dots in putative boron nitride quantum dots. Nano Lett., 2024, 24, 15444.

https://doi.org/10.1021/acs.nanolett.4c05001

Before Xidian University

14.   Junkai Ren, Henry Opoku, Shi Tang, Ludvig Edman*, and Jia Wang*. Carbon Dots: A review with focus on sustainability. Adv. Sci., 2024, 11, 2405472.

https://doi.org/10.1002/advs.202405472

13.   Junkai Ren, Luca Malfatti, Luigi Stagi, Davide Carboni, Roberto Anedda, Laura Calvillo, and Plinio Innocenzi*. Polyethylene glycol-mediated switchable blue-green emissions in sulfur nanostructures controlled through the surface chemistry. Chem. Mater., 2022, 34, 8456.

https://doi.org/10.1021/acs.chemmater.2c02284

12.   Junkai Ren, Luigi Stagi, Luca Malfatti, Valentina Paolucci, Carlo Cantalini, Sebastiano Garroni, Marzia Mureddu, and Plinio Innocenzi*. Improving the photocatalytic activity of mesoporous titania films through the formation of WS₂/TiO₂ nano-heterostructures. Nanomaterials, 2022, 12, 1074.

https://doi.org/10.3390/nano12071074

11.   Junkai Ren, and Plinio Innocenzi*. 2D boron nitride heterostructures: Recent advances and future challenges. Small Struct., 2021, 2, 2100068.

https://doi.org/10.1002/sstr.202100068

10.   Junkai Ren, Luigi Stagi*, Luca Malfatti, Carlo Maria Carbonaro, Gaetano Granozzi, Laura Calvillo, Sebastiano Garroni, Stefano Enzo, and Plinio Innocenzi*. Engineering UV-emitting defects in h-BN nanodots by a top-down route. Appl. Surf. Sci., 2021, 567, 150727.

https://doi.org/10.1016/j.apsusc.2021.150727

9.       Junkai Ren, Luigi Stagi*, Luca Malfatti, Sebastiano Garroni, Stefano Enzo, and Plinio Innocenzi*. Boron nitride-titania mesoporous film heterostructures. Langmuir, 2021, 37, 5348.

https://doi.org/10.1021/acs.langmuir.1c00460

8.       Junkai Ren, Luca Malfatti, and Plinio Innocenzi*. Citric acid derived carbon dots, the challenge of understanding the synthesis-structure relationship. C, 2021, 7, 2.

https://doi.org/10.3390/c7010002

7.       Junkai Ren, Luigi Stagi*, and Plinio Innocenzi*. Hydroxylated boron nitride materials: From structures to functional applications. J. Mater. Sci., 2021, 56, 4053.

https://doi.org/10.1007/s10853-020-05513-6

6.       Junkai Ren, Luigi Stagi, and Plinio Innocenzi*. Fluorescent carbon dots in solid-state: from nanostructures to functional devices. Prog. Solid. State Ch., 2021, 62, 100295.

https://doi.org/10.1016/j.progsolidstchem.2020.100295

5.       Junkai Ren, Luigi Stagi*, Carlo Maria Carbonaro, Luca Malfatti, Maria Francesca Casula, Pier Carlo Ricci, Antonio Del Rio, Francesco Bonaccorso, Laura Calvillo, Gaetano Granozzi, and Plinio Innocenzi*. Defect-assisted photoluminescence in hexagonal boron nitride nanosheets. 2D Mater., 2020, 7, 045023.

https://doi.org/10.1088/2053-1583/ababf0

4.       Junkai Ren, Luca Malfatti, Stefano Enzo, Carlo Maria Carbonaro, Laura Calvillo, Gaetano Granozzi, and Plinio Innocenzi*. Boron oxynitride two-colour fluorescent dots and their incorporation in a hybrid organic-inorganic film. J. Colloid Interface Sci., 2020, 568, 398.

https://doi.org/10.1016/j.jcis.2019.10.020

3.       Zhixia Han,† Yiqun Ni,† Junkai Ren,† Wenfei Zhang*, Yunfeng Wang, Zheng Xie*, Shuyun Zhou*, and Siu Fung Yu. Highly efficient and ultra-narrow bandwidth orange emissive carbon dots for microcavity lasers. Nanoscale, 2019, 11, 11577. († co-first authors)

https://doi.org/10.1039/c9nr03448j

2.       Junkai Ren, Jibin Sun, Xingming Sun, Rui Song*, Zheng Xie*, and Shuyun Zhou. Precisely controlled up/down-conversion liquid and solid state photoluminescence of carbon dots. Adv. Opt. Mater., 2018, 6, 1800115.

https://doi.org/10.1002/adom.201800115

1.       Junkai Ren, Xingming Sun, Yunfeng Wang, Rui Song*, Zheng Xie*, Shuyun Zhou, and Ping Chen. Controllable photoluminescent and nonlinear optical properties of polymerizable carbon dots and their arbitrary copolymerized gel glasses. Adv. Opt. Mater., 2018, 6, 1701273.

https://doi.org/10.1002/adom.201701273