Dr. Yu’s research interest is in the development of semiconductor colloidal quantum dots (QDs), aiming at fundamental understanding of their growth mechanisms and their applied-oriented applications.

Dr. Yu obtained her PhD at McGill Univ (Canada) from Department of Chemistry. After her post-doc fellowship at McMaster Univ (Canada) and Sandia National Laboratories (USA), Dr. Yu moved to Steacie Institute for Molecular Science (SIMS) at National Research Council Canada (NRC) as a Research Office.

At present, being a Changjiang scholar in Sichuan Univ, Dr. Yu also serves as an Associate Editor for ACS Applied Materials & Interfaces.

Publications:

  • Zhang, J.; et al. Riehle, F. S.; Kui Yu “Bright Gradient-Alloyed CdSexS1-x Quantum Dots Exhibiting Cyan-Blue Emission”. Chem. Mater. 2016, online DOI 10.1021/acs.chemmater.5b04380.
  • Yu, K.; et al. Mechanistic Study of the Role of Primary Amines in Precursor Conversions to Semiconductor Nanocrystals at Low Temperature. Angew. Chem. Int. Ed. 53, 6898–6904 (2014).
  • Yu, K. et al. The Formation Mechanism of Binary Semiconductor Nanomaterials: Shared by Single-Source and Dual-Source Precursor Approaches. Angew. Chem. Int. Ed. 52, 11034–11039 (2013).
  • Yu, K.; et al. Effect of Tertiary and Secondary Phosphines on Low-Temperature Formation of Quantum Dots. Angew. Chem. Int. Ed. 52, 4823–4828 (2013).
  • Yu, K. CdSe Magic-Sized Nuclei, Magic-Sized Nanoclusters and Regular Nanocrystals: Monomer Effects on Nucleation and Growth. Adv. Mater. 24, 1123–1132 (2012).

会议报告

Photo-luminescent colloidal semiconductor quantum dots

Photoluminescent (PL) colloidal semiconductor quantum dots (QDs) have attracted significant attention due to their potential in various technological applications including bio-imaging/labelling, photovoltaics (PV), and light emitting devices (LED). Aiming at these applications, our laboratories have been focusing on the development of high-quality QDs with the control of their growth for fundamental investigation on synthesis–size/structure–property–application relationships. In this presentation, I will introduce briefly the development history of these fantastic PL nanocrystals (NCs), together with the advances made in our laboratories and others. Then, I will present our newly-developed alloyed cadmium selenide sulfide (CdSeS) cyan QDs, which exhibit bandgap photoemission at ~490 nm exhibiting near-unity quantum yield (QY) in toluene; the determination of the QD QY was based on the comparison of that of courmarin 334 in ethanol (lit. QY 0.69). Accordingly, I will discuss my concerns for the development of QD-based PL reference materials.