Assoc. Prof. Dr. Yongqiang Ji | Experimental methods | Best Researcher Award

Henan Academy of Sciences | China

Ji Yongqiang is a highly accomplished researcher specializing in nanomaterials, particularly quantum dots and optical devices like QLEDs and solar cells. He is currently serving as an Associate Researcher at the Henan Academy of Sciences and has previously held positions as an Assistant Researcher at Peking University and a PhD student at Xi’an Jiaotong University. His research has earned him recognition for his work in luminescent nanocrystals and perovskite quantum dots, driving innovations in solar cell technology and light-emitting devices.

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📚 Early Academic Pursuits

Ji’s academic journey began at Xi’an University of Technology, where he earned his Bachelor’s in Applied Physics. Under the guidance of Associate Professor Men Shouqiang, he laid a strong foundation in solid-state physics, digital circuits, and quantum mechanics. His interest in material science and semiconductor physics grew during his master’s at Henan University, where he worked with Professor Qian Lei and contributed significantly to condensed matter physics. His doctoral studies at Xi’an Jiaotong University under Professor Wang Minqiang focused on electronic ceramics and device technologies, marking the start of his journey into nanomaterials and optoelectronics.

🔬 Professional Endeavors

Ji’s career has been characterized by exceptional research leadership and contributions to luminescent nanocrystals, quantum dot solar cells, and QLEDs. At Peking University, under Professor Gong Qihuang, he developed cutting-edge devices and optimized fabrication platforms for quantum dots, which enhanced device efficiency and stability. His hands-on expertise spans from magnetron sputtering to transmission electron microscopy (TEM), showcasing his proficiency in advanced research instruments.

💡 Contributions and Research Focus

Ji’s research is driven by the fabrication and spectral tuning of luminescent nanocrystals, particularly quantum dots and perovskite quantum dots. Key contributions include:

Quantum Dot Solar Cells: He developed a precise fabrication platform for AgBiS2 quantum dots, optimizing light absorption and solar cell efficiency.
QLED Device Optimization: By improving spin-coating speeds and nanocrystal concentrations, Ji achieved high-brightness QLEDs, pushing the boundaries of light-emitting devices.
Perovskite Nanostructures: He pioneered research into 1D nanostructures and core-shell structures, improving optical properties and stability for applications in optical communication and energy harvesting.

🌍 Impact and Influence

Ji’s work has left a lasting impact in the fields of nanotechnology, optical devices, and energy solutions. His research on quantum dot solar cells and QLEDs is essential for the advancement of renewable energy technologies and next-generation display systems. Through his collaborations with leading institutions like Peking University and Henan Academy of Sciences, Ji has not only advanced scientific understanding but also contributed to the commercialization of advanced technologies.

📑 Academic Cites

Ji’s research is widely cited in high-impact journals such as Nanotechnology, Micromachines, Materials, and Nano-Structures & Nano-Objects. His work on perovskite quantum dots and quantum dot solar cells has been instrumental in shaping contemporary research in renewable energy and optoelectronics. His publications have earned recognition for their novelty, technical depth, and practical applications.

🛠️ Research Skills

Ji’s technical expertise is multifaceted, and his key research skills include:

Synthesis Methods: Mastery in hot injection, solvothermal, and ball-milling techniques to prepare quantum dots.
Device Fabrication: Expertise in QLED and solar cell fabrication, optimizing processes like spin coating and annealing to enhance device performance.
Material Characterization: Proficient in TEM, PR745 LED testing systems, and vacuum coating for material analysis and device testing.

🏫 Teaching Experience

Ji has shared his knowledge as a mentor to graduate students at Henan University and Xi’an Jiaotong University, guiding them through complex topics in semiconductor physics and material science. His role as a reviewer for various scientific journals demonstrates his commitment to fostering academic growth and providing critical feedback to emerging researchers in the field.

🏆 Awards and Honors

Ji’s academic excellence is reflected in numerous awards and scholarships, including:

Third-Class Scholarship at Xi’an University of Technology (2012)
First-Class Academic Scholarship at Henan University (2014)
Yao Xi Ferroeletric Scholarship at Xi’an Jiaotong University (2020)
Boya Postdoctoral Program at Peking University (2021)
Outstanding Graduate of Shaanxi Province (2022)

🌟 Legacy and Future Contributions

Looking ahead, Ji is well-positioned to continue making groundbreaking contributions to the fields of nanotechnology and energy solutions. His ongoing projects in perovskite QLEDs and quantum dot solar cells are poised to lead to more efficient, durable, and cost-effective devices. His expertise in quantum materials will likely play a crucial role in the future development of sustainable energy technologies and advanced optoelectronic systems. Ji’s commitment to interdisciplinary research and mentorship ensures a bright future for both his career and the next generation of researchers.

Publications Top Notes

Group-VA Doped ZnO Injection Layer for Bright and Efficient Perovskite Light-Emitting Diodes

Authors: X. Yang, Y. Ji, Q. Li, C. Lu, R. Zhu
Journal: Advanced Functional Materials
Year: 2025

Surface-enhanced Raman scattering of R6G dimerization during self-healing of gel

Authors: Y. Zhou, M. Wang, J. Wang, N.V. Gaponenko, A.S. Bhatti
Journal: Mikrochimica Acta
Year: 2025

Solvent-Engineering-Assisted Ligand Exchange Strategy for High-Efficiency AgBiS2 Quantum Dot Solar Cells

Authors: Q. Zhong, B. Zhao, Y. Ji, R. Zhu, L. Zhao
Journal: Angewandte Chemie – International Edition
Year: 2024

Lateral Phase Heterojunction for Perovskite Microoptoelectronics

Authors: L. Li, H. Yan, S. Li, X. Wang, R. Zhu
Journal: Advanced Materials
Year: 2024

Ligand-Tuned AgBiS2 Planar Heterojunctions Enable Efficient Ultrathin Solar Cells

Authors: J. Chen, Q. Zhong, E. Sirotti, R. Zhu, I.D. Sharp
Journal: ACS Nano
Year: 2024

Prof. Ali Ajami | Experimental methods | Best Researcher Award

Prof. Elec. Eng. at Azarbaijan Shahid Madani University (ASMU) , Iran

Ali Ajami is a prominent Iranian electrical engineer born on August 23, 1973. He is a Professor at the Department of Electrical Engineering at Azerbaijan Shahid Madani University. Dr. Ajami has made significant contributions to the field of electrical engineering, particularly in power electronics and renewable energy applications. With a career spanning over two decades, he has combined teaching, administration, and research to enhance the educational landscape at his university. His leadership roles, including Vice President for Research and Technology, showcase his commitment to advancing research initiatives. Dr. Ajami’s extensive academic and administrative experience makes him a respected figure in his field.

Education:

Dr. Ajami obtained his Ph.D. in Electrical Engineering from Tabriz University in 2005, following his M.Sc. in 1999 and B.Sc. in 1996, also from the same institution. His solid educational foundation has equipped him with the knowledge and skills necessary for his professional journey. His studies focused on various aspects of electrical and electronic engineering, allowing him to develop a deep understanding of the field. His academic background is complemented by years of practical experience, positioning him as an expert in power electronics and related areas. Dr. Ajami’s educational achievements are a testament to his dedication and expertise in electrical engineering.

Professional Experience:

Dr. Ajami’s professional journey began as an Assistant Professor at Azerbaijan Shahid Madani University in 2006, where he progressed to Associate Professor in 2011 and Professor in 2016. He has held several significant administrative roles, including Vice President for Research and Technology from 2014 to 2022 and Director of Research Affairs. His teaching portfolio includes a wide range of undergraduate and graduate courses, emphasizing industrial electronics, power quality, and modern control systems. Additionally, he has supervised numerous Ph.D. and Master’s theses, shaping the next generation of engineers. Dr. Ajami’s extensive experience in academia highlights his commitment to education and research excellence.

Research Focus:

Dr. Ajami’s research interests are centered on the design and control of power electronic converters, with applications in renewable energy, electric vehicles, and energy storage systems. He is particularly focused on the dynamic and steady-state modeling of FACTS devices such as STATCOM and UPFC, as well as on harmonics and power quality compensation systems. His expertise extends to the use of microprocessors and digital signal processors in control systems for power electronics. Dr. Ajami’s work aims to enhance the efficiency and reliability of electrical systems, making significant contributions to the advancement of sustainable energy technologies.

Awards and Honors:

Dr. Ajami has received multiple Researcher Awards from Azerbaijan University of Tarbiat Moallem and Azerbaijan Shahid Madani University, recognizing his exceptional contributions to research from 2006 to 2015. Notably, he was awarded the Industrial Researcher Award and ranked among the top 2% of highly cited researchers worldwide from 2020 to present. His accolades reflect his dedication to advancing knowledge and innovation in electrical engineering. These honors not only acknowledge his individual achievements but also enhance the reputation of his affiliated institutions. Dr. Ajami’s awards illustrate his impact on the academic and industrial sectors.

📚Publication Top Notes:

Title: Theoretical and experimental evaluation of SEPIC-based DC–DC converters with two-winding and three-winding coupled inductors

Authors: Mahmoudi, M., Ajami, A., Babaei, E., Soleimanifard, J.
Publication Year: 2022
Citations: 5

Title: A non‐isolated high step‐up DC‐DC converter with integrated 3 winding coupled inductor and reduced switch voltage stress

Authors: M. Mahmoudi, A. Ajami, E. Babaei
Publication Year: 2018
Citations: 37

Title: Minimisations of total harmonic distortion in cascaded transformers multilevel inverter by modifying turn ratios of the transformers and input voltage regulation

Authors: A. Ajami, A. Farakhor, H. Ardi
Publication Year: 2014
Citations: 37

Title: Transformer‐based multilevel inverters: analysis, design and implementation

Authors: S. Salehahari, E. Babaei, SH. Hosseini, A. Ajami
Publication Year: 2019
Citations: 32

Title: A single switch high step‐up DC‐DC converter with three winding coupled inductor

Authors: M. Mahmoudi, A. Ajami, E. Babaei
Publication Year: 2019
Citations: 32

Title: Design and control of a grid tied 6-switch converter for two independent low power wind energy resources based on PMSGs with MPPT capability

Authors: A. Ajami, R. Alizadeh, M. Elmi
Publication Year: 2016
Citations: 32

Yongqiang Ji | Experimental methods | Best Researcher Award