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7,708 results
  • Strategies for extending charge separation in colloidal nanostructured quantum dot materials. [Journal Article]
    Phys Chem Chem Phys 2019Maity P, Ghosh HN
  • Semiconductor colloidal metal chalcogenides (II-VI) in the form of quantum dots (QDs) and different heterostructures (core/shell, alloys, etc.) are of extensive interest in scientific research for both a fundamental understanding and technological applications because of their quantized size and different optical properties; however, due to their small size, the exciton (bound electron and hole) …
  • Enhancing the stability of the electron density in electrochemically doped ZnO quantum dots. [Journal Article]
    J Chem Phys 2019; 151(14):144708Gudjonsdottir S, Koopman C, Houtepen AJ
  • Electronic doping of semiconductor nanomaterials can be efficiently achieved using electrochemistry. However, the injected charge carriers are usually not very stable. After disconnecting the cell that is used for electrochemical doping, the carrier density drops, typically in several minutes. While there are multiple possible causes for this, we demonstrate here using n-doped ZnO quantum-dot (QD…
  • Enhanced thermal stability of InP quantum dots coated with Al-doped ZnS shell. [Journal Article]
    J Chem Phys 2019; 151(14):144704Koh S, Lee H, … Lee DC
  • Colloidal InP quantum dots (QDs) have attracted a surge of interest as environmentally friendly light-emitters in downconversion liquid crystal displays and light-emitting diodes (LEDs). A ZnS shell on InP-based core QDs has helped achieve high photoluminescence (PL) quantum yield (QY) and stability. Yet, due to the difficulty in the growth of a thick ZnS shell without crystalline defects, InP-ba…
  • Compact quantum dot surface modification to enable emergent behaviors in quantum dot-DNA composites. [Journal Article]
    J Chem Phys 2019; 151(14):144706Dehankar A, Porter T, … Winter JO
  • Quantum dot (QD) biological imaging and sensing applications often require surface modification with single-stranded deoxyribonucleic acid (ssDNA) oligonucleotides. Furthermore, ssDNA conjugation can be leveraged for precision QD templating via higher-order DNA nanostructures to exploit emergent behaviors in photonic applications. Use of ssDNA-QDs across these platforms requires compact, controll…
  • ZnSxSe1-x Alloy Passivation Layer for High Efficiency Quantum Dot Sensitized Solar Cells. [Journal Article]
    ACS Appl Mater Interfaces 2019Zhang L, Rao H, … Zhong X
  • Interface modification is an important means for improving the performance of almost all optoelectronic devices. In quantum dot-sensitized solar cells (QDSCs), effective surface modification of photoanode also has a critical impact on photovoltaic performance. At present, ZnS and ZnSe wide band gap semiconductors are the mainstream materials used for photoanode/electrolyte interface passivation i…
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