By a News Reporter-Staff News Editor at Physics Week -- Current study results on Nanoporous have been published. According to news reporting from Beijing, People's Republic of China, by VerticalNews journalists, research stated, "ZnO porous thin films with nanowire structure were deposited by the one-step electrochemical deposition method. And a CdS layer was coated on the as-deposited ZnO nanowire thin films by successive ionic layer adsorption and reaction (SILAR) method to passivate surface states."
The news correspondents obtained a quote from the research from the Institute of Chemistry, "Then the films were further sensitized by CdSe quantum dots (QDs) to serve as a photoanode for fabricating quantum dots-sensitized solar cells (QDSSCs). The effect of the CdS interfacial passivation layer on the performance of the QDSSCs was systematically investigated by varying the SILAR cycle number and heating the passivation layer. The amorphous CdS layer with an optimized thickness can effectively suppress the recombination of the injected electrons with holes on QDs and the redox electrolyte. The newly formed CdS layer on the surface of the ZnO nanowire thin film obviously prolongs the electron lifetime in the passivated ZnO nanoporous thin film because of the lower surface trap density in the ZnO nanowires after CdS deposition, which is favorable to the higher short-circuit photocurrent density (J(sc)). For the CdSe QDs-sensitized ZnO nanoporous thin film with the interfacial passivation layer, the J(sc) and conversion efficiency can reach a maximum of 8.36 mA cm(-2) and 2.36%, respectively."
According to the news reporters, the research concluded: "The conversion efficiency was improved by 83.47% compared with that of the cell based on the CdSe QDs-sensitized ZnO nanoporous thin film without CdS interfacial passivation (0.39%)."
For more information on this research see: Interfacial passivation of CdS layer to CdSe quantum dots-sensitized electrodeposited ZnO nanowire thin films. Electrochimica Acta, 2013;106():121-126. Electrochimica Acta can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England.
Our news journalists report that additional information may be obtained by contacting J.B. Zhang, Chinese Academy Sci, Inst Chem, Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100190, People's Republic of China. Additional authors for this research include C.Z. Sun, S.L. Bai, R.X. Luo, A.F. Chen, L.N. Sun and Y. Lin.
Keywords for this news article include: Asia, Beijing, Nanoporous, Quantum Dots, Nanotechnology, Quantum Physics, Emerging Technologies, People's Republic of China
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