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New Electrolytes Data Have Been Reported by Researchers at Hainan University (Effect of cationic groups in organic sulfide electrolyte on the...

August 29, 2014



New Electrolytes Data Have Been Reported by Researchers at Hainan University (Effect of cationic groups in organic sulfide electrolyte on the performance of CdS quantum dot sensitized solar cells)

By a News Reporter-Staff News Editor at Science Letter -- A new study on Electrolytes is now available. According to news reporting from Haikou, People's Republic of China, by NewsRx journalists, research stated, "Two organic sulfide redox couples derived from 2-mercapto-5-methyl-1,3,4-thiadiazole (McMT): tetrabutylammonium thiolate (McMT(-)TBA(+))/disulfide dimer (BMT) and tetramethylammonium thiolate (McMT(-)TMA(+))/BMT were incorporated into quantum dots sensitized solar cells (QDSCs) as alternatives to the inorganic polysulfide electrolyte (Na2S/S). It was found in symmetrical cells test that the interfaces of the organic sulfide electrolytes/platinum counter-electrode have much lower charge transfer resistances as well as higher interface reaction rates compared with that for the inorganic one."

The news correspondents obtained a quote from the research from Hainan University, "Besides, QDSCs based on organic sulfide electrolytes exhibited obviously higher fill factors, open circuit photovoltages, and therefore higher conversion efficiency, thanks to the prohibited recombination and lower redox potential. In addition, by comparing and analyzing the performance of devices based on organic sulfide electrolytes with different cationic groups, it is found that cationic group TMA(+) with smaller size was favorable for the mass transport in the electrolyte, which explains the better photovoltaic performance of McMT(-)TMA(+)/BMT based solar cell than that of McMT(-)TBA(+)/BMT based one."

According to the news reporters, the research concluded: "Eventually, a power conversion efficiency (PCE) of 0.63 % was achieved for QDSCs using McMT(-)(TMA(+))/BMT redox couple as electrolyte, which was till now the highest for CdS QDSC based on organic sulfide electrolyte."

For more information on this research see: Effect of cationic groups in organic sulfide electrolyte on the performance of CdS quantum dot sensitized solar cells. Chinese Science Bulletin, 2014;59(25):3209-3215. Chinese Science Bulletin can be contacted at: Science Press, 16 Donghuangchenggen North St, Beijing 100717, Peoples R China. (World Scientific Publishing - www.worldscientific.com/; Chinese Science Bulletin - www.worldscinet.com/csb/csb.shtml)

Our news journalists report that additional information may be obtained by contacting X. Li, Hainan Univ, Hainan Prov Key Lab Res Utilizat Si Zr Ti Resourc, Minist Educ Applicat Technol Chem Mat Hainan Supe, Key LabColl Mat Sci & Chem Engn, Haikou 570228, People's Republic of China. Additional authors for this research include H.P. Shen, W.L. Wang, J.B. Li and H. Lin (see also Electrolytes).

Keywords for this news article include: Asia, Haikou, Electrolytes, Quantum Dots, Nanotechnology, Inorganic Chemicals, Emerging Technologies, People's Republic of China

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


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Source: Science Letter


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