News Column

New Findings from Lancaster University in Quantum Dots Provides New Insights (Activation of CdSe Quantum Dots after Exposure to Polysulfide)

August 20, 2014



By a News Reporter-Staff News Editor at Biotech Week -- Data detailed on Quantum Dots have been presented. According to news reporting out of Lancaster, United Kingdom, by NewsRx editors, research stated, "Polysulfide electrolyte is the most commonly utilized electrolyte in quantum dot-sensitized solar cells (QDSSCs). Recently, however, a redshift in the relative positions of the absorbance and incident photon conversion efficiencies of CdSe QDs in polysulfide solutions has been reported."

Our news journalists obtained a quote from the research from Lancaster University, "We conduct extensive analyses of CdSe QD films comparing those exposed to polysulfide solution with unexposed films; indeed, a redshift in the absorbance is observed after exposure. Most strikingly, we observe that a photocurrent response from films immersed in sodium sulfite is observed only after exposure to polysulfide solution. We demonstrate this is due to a combination of both QD ripening and a change in the QD capping layer."

According to the news editors, the research concluded: "The results demonstrate that a polysulfide processing step significantly alters the photoelectrochemical performance of QDs."

For more information on this research see: Activation of CdSe Quantum Dots after Exposure to Polysulfide. Journal of Physical Chemistry C, 2014;118(26):14555-14561. Journal of Physical Chemistry C can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Journal of Physical Chemistry C - www.pubs.acs.org/journal/jpccck)

Our news journalists report that additional information may be obtained by contacting L.A. King, University of Lancaster, Dept. of Chem, Lancaster LA1 4YB, United Kingdom. Additional authors for this research include W.J. Zhao, L. Danos and D.J. Riley (see also Quantum Dots).

Keywords for this news article include: Europe, Lancaster, Quantum Dots, United Kingdom, Nanotechnology, Quantum Physics, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Biotech Week


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