Assistant Professor TAN Zhi Kuang
B.Sc., Honours 1st Class, National University of Singapore, 2010; Ph.D., University of Cambridge, 2014; Postdoctoral, University of Cambridge, 2015.
Tel: (65)-6516-6776 |
Email: firstname.lastname@example.org | Personal webpage
Recognition and Achievements
- NUS Early Career Research Award
- National Research Foundation PhD Overseas Scholarship
- Materials chemistry and physics of optoelectronic devices
- New hybrid and organic semiconductors
- Spectroscopy and charge dynamics in semiconductors
- Nano-materials, structures and quantum dots
In 2014, we successfully demonstrated bright electroluminescence in new hybrid perovskites (Tan, Z.-K. et al., Nature Nanotechnology 9, 687), thereby opening up possibilities of their application in large-area colour displays and lighting. Our group aims to build on this initial success to achieve high-performance perovskite-based light-emitting diodes and photovoltaics through materials and device engineering as well as fundamental optical and structural investigations. As perovskite semiconductors possess low exciton binding energy, it is necessary to confine electronic charges within quantum dots or charge-wells for efficient exciton formation and radiative recombination. We chemically synthesize luminescent perovskite nanoparticles and nanorods, and work on surface defect passivation to enhance their luminescence yield. We analyse our new nanomaterials using advanced structural techniques such as x-ray diffraction, atomic force microscopy and electron microscopy to investigate their crystallinity and polydispersity. We also use optical spectroscopic techniques to determine luminescence efficiency and spectral characteristics, which could provide clues towards defect density and the extent of exciton confinement. Successes in the development of this new material class could bring real commercial benefits towards the growing large-panel display industry.
- CM3252 Polymer Chemistry 1
- Li, G.; Rivarola, F. W. R.; Davis, N. J. L. K.; Bai, S.; Jellicoe, T. C.; Peña, F. d. l.; Hou, S.; Ducati, C.; Gao, F.; Friend, R. H.; Greenham, N. C.; Tan, Z.-K. Highly-Efficient Perovskite Nanocrystal Light-Emitting Diodes Enabled by a Universal Cross-linking Method. Adv. Mater. 2016, 28, 3528.
- Tan, Z. K.; Moghaddam, R. S.; Lai, M. L.; Docampo, P.; Higler, R.; Deschler, F.; Price, M.; Sadhanala, A.; Pazos, L. M.; Credgington, D.; Hanusch, F.; Bein, T.; Snaith, H. J.; Friend, R. H. Bright Light-Emitting Diodes Based on Organometal Halide Perovskite. Nat. Nanotechnol. 2014, 9, 687.
- Tan, Z. K.; Vaynzof, Y.; Credgington, D.; Li, C.; Casford, M. T. L.; Sepe, A.; Huettner, S.; Nikolka, M.; Paulus, F.; Yang, L.; Sirringhaus, H.; Greenham, N. C.; Friend, R. H. In-Situ Switching from Barrier-Limited to Ohmic Anodes for Efficient Organic Optoelectronics. Adv. Funct. Mater. 2014, 24, 3051.
- Tan, Z. K.; Johnson, K.; Vaynzof, Y.; Bakulin, A. A.; Chua, L. L.; Ho, P. K. H.; Friend, R. H. Suppressing Recombination in Polymer Photovoltaic Devices via Energy-Level Cascades. Adv. Mater. 2013, 25, 4131.
- Li, G. R.; Tan, Z. K.; Di, D. W.; Lai, M. L.; Jiang, L.; Lim, J. H. W.; Friend, R. H.; Greenham, N. C. Efficient Light-Emitting Diodes Based on Nanocrystalline Perovskite in a Dielectric Polymer Matrix. Nano Lett. 2015, 15, 2640.
- Wang, J. P.; Wang, N. N.; Jin, Y. Z.; Si, J. J.; Tan, Z. K.; Du, H.; Cheng, L.; Dai, X. L.; Bai, S.; He, H. P.; Ye, Z. Z.; Lai, M. L.; Friend, R. H.; Huang, W. Interfacial Control Toward Efficient and Low-Voltage Perovskite Light-Emitting Diodes. Adv. Mater. 2015, 27, 2311.