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New Findings from Massachusetts Institute of Technology in Quantum Dots Provides New Insights (Improved performance and stability in quantum dot...

August 27, 2014



New Findings from Massachusetts Institute of Technology in Quantum Dots Provides New Insights (Improved performance and stability in quantum dot solar cells through band alignment engineering)

By a News Reporter-Staff News Editor at Journal of Engineering -- A new study on Quantum Dots is now available. According to news reporting originating from Cambridge, Massachusetts, by VerticalNews correspondents, research stated, "Solution processing is a promising route for the realization of low-cost, large-area, flexible and lightweight photovoltaic devices with short energy payback time and high specific power. However, solar cells based on solution-processed organic, inorganic and hybrid materials reported thus far generally suffer from poor air stability, require an inert-atmosphere processing environment or necessitate high-temperature processing(1), all of which increase manufacturing complexities and costs."

Our news editors obtained a quote from the research from the Massachusetts Institute of Technology, "Simultaneously fulfilling the goals of high efficiency, low-temperature fabrication conditions and good atmospheric stability remains a major technical challenge, which may be addressed, as we demonstrate here, with the development of room-temperature solution-processed ZnO/PbS quantum dot solar cells. By engineering the band alignment of the quantum dot layers through the use of different ligand treatments, a certified efficiency of 8.55% has been reached. Furthermore, the performance of unencapsulated devices remains unchanged for over 150 days of storage in air."

According to the news editors, the research concluded: "This material system introduces a new approach towards the goal of high-performance air-stable solar cells compatible with simple solution processes and deposition on flexible substrates."

For more information on this research see: Improved performance and stability in quantum dot solar cells through band alignment engineering. Nature Materials, 2014;13(8):796-801. Nature Materials can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group - www.nature.com/; Nature Materials - www.nature.com/nmat/)

The news editors report that additional information may be obtained by contacting C.H.M. Chuang, MIT, Dept. of Chem, Cambridge, MA 02139, United States. Additional authors for this research include P.R. Brown, V. Bulovic and M.G. Bawendi.

Keywords for this news article include: Cambridge, Engineering, Quantum Dots, Massachusetts, United States, Nanotechnology, Emerging Technologies, North and Central America

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


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Source: Journal of Engineering


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