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Aqueous electrolyte based dye-sensitized solar cells using organic sensitizers
Choi, Hyeju,Jeong, Ban-Seok,Do, Kwangseok,Ju, Myung Jong,Song, Kihyung,Ko, Jaejung The Royal Society of Chemistry 2013 New journal of chemistry Vol.37 No.2
<P>Two novel organic sensitizers containing a 2-(2-methoxyethoxy)ethyl unit are designed and synthesized. Under standard global AM 1.5 solar conditions, the <B>JK-262</B> sensitized cell in conjunction with an aqueous electrolyte gave a short-circuit photocurrent density (<I>J</I><SUB>sc</SUB>) of 3.78 mA cm<SUP>−2</SUP>, an open-circuit voltage (<I>V</I><SUB>oc</SUB>) of 0.68 V, and a fill factor of 0.82, affording an overall conversion efficiency (<I>η</I>) of 2.10%. The <I>η</I> of <B>JK-262</B> is higher than that of <B>JK-259</B> due to the larger <I>J</I><SUB>sc</SUB>. The improved <I>J</I><SUB>sc</SUB> value is attributable to the broad and red-shifted absorption band as well as the dense packing of <B>JK-262</B> on the TiO<SUB>2</SUB> film.</P> <P>Graphic Abstract</P><P>Two novel organic sensitizers containing a 2-(2-methoxyethoxy)ethyl unit are designed and synthesized. Under standard global AM 1.5 solar conditions, the <B>JK-262</B> sensitized cell in conjunction with an aqueous electrolyte gave a <I>J</I><SUB>sc</SUB> of 3.78 mA cm<SUP>−2</SUP>, an <I>V</I><SUB>oc</SUB> of 0.68 V, and a fill factor of 0.82, affording an overall conversion efficiency (<I>η</I>) of 2.10%. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2nj40577f'> </P>