Author/Authors :
Jui-Cheng Chang a، نويسنده , , Cheng-Hsien Yang b، نويسنده , , ?، نويسنده , , Hao-Hsun Yang b، نويسنده , , Mao-Lin Hsueh b، نويسنده , ,
Wen-Yueh Hoc، نويسنده , , ?، نويسنده , , Jia-Yaw Chang d، نويسنده , , I-Wen Sun a، نويسنده ,
Abstract :
The influence of using pyridinium molten salts as co-adsorbents to modify the monolayer of a TiO2 semiconductor on the performance
of a dye-sensitized solar cell is studied. The current–voltage characteristics are measured under AM 1.5 (100 mW cm 2). The
pyridinium molten salts significantly enhance the open-circuit photovoltage (Voc), the short circuit photocurrent density (Jsc) as well
as the solar energy conversion efficiency (g). 1-Ethyl-3-carboxypyridinium iodide ([ECP][I]) is applied successfully to prepare an insulating
molecular layer with N719, and achieve high energy conversion efficiency as high as 4.49% at 100 mW cm 2 and AM 1.5. The resulting
efficiency is 20% higher than that of a non-additive device. This enhancement of conversion efficiency is attributed to the negative
shift of the conduction band (CB) edge and the abundant concentration of I on the surface of the electrode when using [ECP][I] as
the co-adsorbent.
2010 Elsevier Ltd. All rights reserved
