Andrey Rogach (SIMES Seminar)

Date(s) - Apr 5 2017
11:00 AM - 12:00 PM

Room 335, McCullough Building


Light-Emitting Colloidal Nanostructures

Andrey L. Rogach

Department of Physics and Materials Science & Centre for Functional Photonics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong S.A.R.



In this talk, I will provide an overview of light-emitting colloidal nanostructures synthesized in our labs, which include II-VI quantum dots emitting over the broad visible and near-infrared spectral range [1,2]; carbon dots [3,4]; perovskite nanocrystals [5,6]; and copper clusters [7,8]. I will highlight their photophysical properties studied by advanced optical spectroscopy techniques, and demonstrate their emerging applications ranging from light-emitting diodes [6-8] to liquid crystal displays [9] and luminescence nanothermometry [10].


  1. L. Jing, S. V. Kershaw, Y. Li, X. Huang, Y. Li, A. L. Rogach, M. Gao. Aqueous Based Semiconductor Nanocrystals. Chem. Rev. 2016, 116, 10623-10730.
  2. Q. Wen, S. V. Kershaw, S. Kalytchuk, O. Zhovtiuk, C. Reckmeier, M. I. Vasilevskiy, A. L. Rogach. Impact of D2O/H2O Solvent Exchange on the Emission of HgTe and CdTe Quantum Dots: Polaron and Energy Transfer Effects. ACS Nano 2016, 10, 4301.
  3. C. J. Reckmeier, J. Schneider, A. S. Susha, A. L. Rogach. Luminescent Colloidal Carbon Dots: Optical Properties and Effects of Doping. Optics Express 2016, 24, A313.
  4. J. Schneider, C. J. Reckmeier, Y. Xiong, M. von Seckendorff, A. S. Susha, P. Kasak, A. L. Rogach. Molecular Fluorescence in Citric Acid Based Carbon Dots. J. Phys. Chem. C, 2017, 121, 2014-2022.
  5. H. Huang,  L. Polavarapu, J. A. Sichert, A. S. Susha,  A. S. Urban, A. L. Rogach. Colloidal Lead Halide Perovskite Nanocrystals: Synthesis, Optical Properties and Applications. NPG Asia Mater. 2016, 8, e328.
  6. H. Huang, B. Chen, Z. Wang, T. F. Hung, A. S. Susha, H. Zhong, A. L. Rogach. Water Resistant CsPbX3 Nanocrysals Coated by Polyhedral Oligomeric Silsesquioxane and their Use as Solid State Luminophores in All-Perovskite White Light Emitting Devices. Chem. Sci. 2016, 7, 5699-5703.
  7. Z. Wang, B. Chen, A. S. Susha, W. Wang, C. J. Reckmeier, R. Chen, H. Zhong, A. L. Rogach. All-Copper Nanocluster Based Down-Conversion White Light-Emitting Devices. Adv. Sci. 2016, 3, 1600182.
  8. Z. Wang, B. Chen, M. Zhu, S. V. Kershaw, C. Zhi, H. Zhong, A. L. Rogach. Stretchable and Thermally Stable Dual Emission Composite Films of On-Purpose Aggregated Copper Nanoclusters in Carboxylated Polyurethane for Remote White Light-Emitting Devices. ACS Appl. Mater. Interf. 2016, 8, 33993-33998.
  9. T. Du, J. Schneider, A. K. Srivastava, A. S. Susha, V. G. Chigrinov, H. S. Kwok, A. L. Rogach. Combination of Photo-Induced Alignment and Self-Assembly to Realize Polarized Emission from Ordered Semiconductor Nanorods. ACS Nano 2015, 9, 11049-11055.
  10. S. Kalytchuk, K. Polakova, Y. Wang, J. P. Froning, K. Cepe, A. L. Rogach, R. Zboril. Carbon Dots Nanothermometry: Intracellular Photoluminescence Lifetime Thermal Sensing. ACS Nano 2017, 11, 1432–1442.