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Dr.Di Zhang Academic RankAssistant Professor

Specialization:

  • Ph.D. in Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong

Research Interests:

  • - Third-generation photovoltaic and optoelectronic devices (dye-sensitized/organic/perovskite solar cells, photodetectors, LEDs)
    - Surface-enhanced Raman scattering (SERS) sensing
    - Plasmonic nanomaterials & nanostructures (metal nanoparticles, nanoprisms, nanowires)
    - Carbon-based nanomaterials (graphene, carbon nanofibers)

Contact

- Ph.D., Electrical and Electronic Engineering, University of Hong Kong, Hong Kong (2014) - B.E., Microelectronics and Nanoelectronics, Tsinghua University, Beijing (2010)
- Assistant Professor, Dept. of Sustainable & Renewable Energy Engineering, University of Sharjah, Sharjah (2015 – present) - Postdoctoral Research Associate, Dept. of Electrical and Electronic Engineering, University of Hong Kong, Hong Kong (2014 – 2015)
- Guest Associate Editor: Frontiers in Materials: Research Topics on Emerging Perovskite and Interfacial Materials for Photovoltaic Applications (2018 – 2019) - Peer reviewer: Journal of Materials Chemistry C (2018 – present) - Peer reviewer: IEEE Photonics Journal (2017 – Present) - Peer reviewer: MRS Advances (2017 – Present) - Peer reviewer: International Journal of Electronics and Communications (2017 – Present) - Peer reviewer: Applied Physics Letters (2016 – Present) - Peer reviewer: Physical Chemistry Chemical Physics (2013 – Present)
- Absorber Engineering and Interface Design for Stable and Efficient Perovskite Solar Cells (submitted, University of Sharjah) - Investigating plasmonic-electrical nanostructures for performance enhancement in dye-sensitized solar cells (University of Sharjah) - Enhancements of the properties the Organometallic mixed- halide perovskite solar cells using doped graphene naoplatlets as a counter electrode (American University of Sharjah) - Enhancement of the power output and efficiency of dye- sensitized solar cells by investigating the counter electrode construction and natural organic sensitizers (Sharjah Research Academy (SRA) / University of Sharjah) - Enhancing the performance of low-cost ball-milled graphene in energy and environmental applications (University of Sharjah) - Low-cost photovoltaic dye-sensitized solar cells using flexible transparent graphene electrodes and natural dyes (University of Sharjah)
1- Alami, A. H.; Aokal, K.; Zhang, D.; Taieb, A.; Faraj, M.; Alhammadi, A.; Ashraf, J. M.; Soudan, B.; El Hajjar, J.; Irimia‐ Vladu, M. Low‐cost Dye‐sensitized Solar Cells with Ball‐ milled Tellurium‐doped Graphene as Counter Electrodes and a Natural Sensitizer Dye. Int J Energy Res 2019, 43 (11), 5824–5833. https://doi.org/10.1002/er.4684. 2- Zhang, D.; Allagui, A.; Elwakil, A. S.; Nassef, A. M.; Rezk, H.; Cheng, J.; Choy, W. C. H. On the Modeling of Dispersive Transient Photocurrent Response of Organic Solar Cells. Organic Electronics 2019, 70, 42–47. https://doi.org/10.1016/j.orgel.2019.03.054. 3- Zhang, D.; Taieb, A.; Alami, A. H.; Aokal, K.; Alawadhi, H.; Abed, J.; Bichara, L. A Cost-Effective Nanoparticle-Gap-Film SERS Sensor Using Graphene Nanospacer by One-Step Transfer-Free Mechanical Milling. Journal of Applied Physics 2019, 125 (6), 063102. https://doi.org/10.1063/1.5078864. 4- Allagui, A.; Zhang, D.; Elwakil, A. S. Short-Term Memory in Electric Double-Layer Capacitors. Applied Physics Letters 2018, 113 (25), 253901. https://doi.org/10.1063/1.5080404. 5- Li, C.; Wang, Z. S.; Zhu, H. L.; Zhang, D.; Cheng, J.; Lin, H.; Ouyang, D.; Choy, W. C. H. Thermionic Emission–Based Interconnecting Layer Featuring Solvent Resistance for Monolithic Tandem Solar Cells with Solution-Processed Perovskites. Advanced Energy Materials 2018, 8 (36), 1801954. https://doi.org/10.1002/aenm.201801954. 6- Allagui, A.; Elwakil, A. S.; Said, Z.; Abdelkareem, M. A.; Zhang, D. Band-Pass Filter and Relaxation Oscillator Using Electric Double-Layer Capacitor. ChemElectroChem 2018, 5 (23), 3793–3798. https://doi.org/10.1002/celc.201800872. 7- Alami, A. H.; Aokal, K.; Zhang, D.; Soudan, B. Bulk Turbostratic Graphene Deposition on Aluminum Substrates via High- Pressure Graphite Blasting. Appl Nanosci 2018, 8 (8), 1943– 1950. https://doi.org/10.1007/s13204-018-0862-1 8- Zhang, D.; Alami, A. H.; Tawalbeh, M.; Aokal, C.; Alhammadi, A.; Taieb, A.; Abu Rabah, R., Efficiency and high-temperature response of dyesensitized solar cells using natural dyes extracted from Calotropis, 5th International Conference on Renewable Energy: Generation and Applications (ICREGA'18), pp. 183, United Arab Emirates. (IEEE Xplore DOI: 10.1109/ICREGA.2018.8337593) (2018). 9- Alami, A. H.; Aokal, K.; Assad, M. A.; Zhang, D.; Alawadhi, H.; Bilal, R., “One-step synthesis and deposition of few-layer graphene via facile, dry ball-free milling”. MRS Advances, 1-10 (2017). 10- Zhu, H. L.; Cheng, J.; Zhang, D.; Liang, C.; Reckmeier, C. J.; Huang, H.; Rogach, A. L.; Choy, W. C. H., “Room-Temperature Solution-Processed NiOx:PbI2 Nanocomposite Structures for Realizing High-Performance Perovskite Photodetectors”. ACS Nano, 10, 6808-6815 (2016). 11- Choy, W. C. H.; Zhang, D., “Solution‐Processed Metal Oxides as Efficient Carrier Transport Layers for Organic Photovoltaics”. Small, 12(4), 416-431 (2016). 12- Alami, A. H.; Zhang, D.; Aokal, C.; Abed, J.; Abdoun, I. A.; Alawadhi, H., “Influence of Magnetic Field on the Mesoporous Structure of Fe-Cu Compounds in Dye- Sensitized Photovoltaic Cells”. Metallurgical and Materials Transactions E, Vol. 3, 37-45 (2016). 13- Liu, J.; Li, X.; Zhang, S.; Ren, X.; Cheng, J.; Zhu, L.; Zhang, D.; Huo, L.; Hou, J.; Choy, W. C. H., “Synergic Effects of Randomly Aligned SWCNT Mesh and Self-Assembled Molecule Layer for High-Performance, Low-Bandgap, Polymer Solar Cells with Fast Charge Extraction”. Advanced Materials Interfaces, 2:1500324, DOI: 10.1002/admi.201500324 (2015). 14- Zhang, H.; Mao, J.; He, H.; Zhang, D.; Zhu, H. L.; Xie, F.; Wong, K. S.; Grätzel, M.; Choy, W. C. H., “A Smooth CH3NH3PbI3 Film via a New Approach for Forming the PbI2 Nanostructure Together with Strategically High CH3NH3I Concentration for High Efficient Planar-Heterojunction Solar Cells”. Adv. Energy Mater., 5, 1501354 (2015). 15- Mao, J.; Zhang, H.; He, H.; Lu, H.; Xie, F.; Zhang, D.; Wong, K. S.; Choy, W. C. H., “Smooth CH3NH3PbI3 from controlled solid-gas reaction for photovoltaic applications”. RSC Advances, 5, 73760-73766 (2015). 16- Lu, H.; Zhang, D.; Cheng, J.; Liu, J.; Mao, J.; Choy, W. C. H., “Locally Welded Silver Nano-Network Transparent Electrodes with High Operational Stability by a Simple Alcohol-based Chemical Approach”. Adv. Funct. Mater., 25, 4211–4218 (2015). 17- Jiang, F.; Choy, W. C. H.; Li, X.; Zhang, D.; Cheng J., “Post- Treatment-Free Solution Processed Non-Stoichiometric NiOx Nanoparticles for Efficient Hole-Transport Layers in Organic Optoelectronic Devices”. Adv. Mater., 27, 2930–2937 (2015). 18- Xie, F.; Zhang, D.; Su, H.; Ren, X.; Wong, K. S.; Grätzel, M.; Choy, W. C. H., “Vacuum-Assisted Thermal Annealing of CH3NH3PbI3 for Highly Stable and Efficient Perovskite Solar Cells”. ACS Nano, 9, 639–646 (2015). 19- Lu, H.; Zhang, D.; Ren, X.; Liu, J.; Choy, W. C. H., “Selective Growth and Integration of Silver Nanoparticles on Silver Nanowires at Room Conditions for Transparent Nano- Network Electrode”. ACS Nano, 8, 10980–10987 (2014). 20- Li, X.; Choy, W. C. H.; Ren, X.; Zhang, D.; Lu, H., “Highly Intensified Surface Enhanced Raman Scattering by Using Monolayer Graphene as the Nanospacer of Metal Film– Metal Nanoparticle Coupling System”. Adv. Funct. Mater., 24, 3114-3122 (2014). 21- Choy, W. C. H.; Sha, W. E. I.; Li, X.; Zhang, D., “Multi-Physical Properties of Plasmonic Organic Solar Cells”. Progress In Electromagnetics Research, 146, 25-46 (2014). 22- Xie, F.; Choy, W. C. H.; Sha, W. E.I.; Zhang, D.; Zhang, S.; Li, X.; Leung, C.-W.; Hou, J., “Enhanced Charge Extraction in Organic Solar Cells through Electron Accumulation Effects Induced by Metal Nanoparticles”. Energ. Environ. Sci., 6, 3372-3379 (2013). 23- Zhang, D.; Choy, W. C. H.; Xie, F.; Sha, W. E. I.; Li, X.; Ding, B.; Zhang, K.; Huang, F.; Cao, Y., “Plasmonic Electrically Functionalized TiO2 for High-Performance Organic Solar Cells”. Adv. Funct. Mater., 23, 4255-4261 (2013). 24- Lin, P.; Choy, W. C.; Zhang, D.; Xie, F.; Xin, J.; Leung, C., “Semitransparent Organic Solar Cells with Hybrid Monolayer Graphene/Metal Grid as Top Electrodes”. Appl. Phys. Lett., 102, 113303-4 (2013). 24- Zhang, D.; Xie, F.; Lin, P.; Choy, W. C. H., “Al-TiO2 Composite-Modified Single-Layer Graphene as an Efficient Transparent Cathode for Organic Solar Cells”. ACS Nano, 7, 1740-1747 (2013). 25- Zhang, D.; Choy, W. C. H.; Xie, F.; Li, X., “Large-Area, High- Quality Self-Assembly Electron Transport Layer for Organic Optoelectronic Devices”. Org. Electron., 13, 2042-2046 (2012). 26- Zhang, D.; Choy, W. C. H.; Wang, C. C. D.; Li, X.; Fan, L.; Wang, K.; Zhu, H., “Polymer solar cells with gold nanoclusters decorated multi-layer graphene as transparent electrode”. Appl. Phys. Lett., 99, 223302 (2011).
- Optical Enhancement of Dye-Sensitized Solar Cells Using Metallic Nanomaterials (*co-supervision) - Design and Manufacture of P3HT:PCBM Organic Solar Cells (2nd place in Graduation Projects Fair of the College of Engineering 2017/2018 Fall, University of Sharjah) - Optically Enhanced Solar Cells Using Nanoimprinted Metallic Grating - Electrolyte selection for third generation solar cells (*co-supervision) - Applying Plasmonic Effect on Dye-Sensitized Solar Cells by Integration of Au/Ag Nanoparticles - Photovoltaic and Thermoelectric Lossless Hybrid System - Performance Enhancement in Solar Cells using Optically Complementary Natural Dyes - 3D Third Generation Solar Panels using Edge Emitting Fiber Optics (1st place (Environmental Engineering category), 4th UAE Undergraduate Student Research Competition 2016, Abu Dhabi University) - Electricity Generation from Gamma Radiating Dry-Cask via Scintillator and PV Cells (*co-supervision)
- Hong Kong Ph.D. Fellowship, Research Grants Council (RGC), Hong Kong (2010 – 2014) - Research Summer Stay Scheme 2018 (University of Sharjah)
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