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|Title: ||Coumarin dye with ethynyl group as π-spacer unit for dye sensitized solar cells|
|Authors: ||Torres, Érica|
Mendes, Paulo J.
Silva, Tiago J.L.
Brites, Maria João
|Keywords: ||Coumarin dyes|
Dye-sensitized solar cells
|Issue Date: ||2015|
|Publisher: ||Science Direct|
|Citation: ||Érica Torres, Sara Sequeira, Pedro Parreira, Paulo J. Mendes, Tiago J. Silva, Killian Lobato, Maria João Brites. Coumarin dye with ethynyl group as π-spacer unit for dye sensitized solar cells. J. Phot. Photob. A: Chemistry, 310 (2015) 1-8|
|Abstract: ||C1-LEN coumarin dye, containing an ethynyl conjugated bridge was tested as a new chromophore for dye-sensitized solar cells (DSSCs). Investigation on the relationship of dye structure, optical properties, electrochemical properties and performance of DSSCs is described. The C1-LEN-sensitized solar cells showed an overall conversion efficiency of 2.2% (JSC = 6.11 mA/cm2, VOC = 547 mV, FF = 0.66), which corresponds to 68% of N719-based device efficiency, fabricated under similar conditions. Electrochemical impedance spectroscopy (EIS) analysis reveals that charge recombination at the nanocrystalline TiO2/dye/redox electrolyte interface is similar for C1-LEN and N719 sensitized solar cells, i.e., charge recombination is not the factor limiting the performance of C1-LEN device.|
|Appears in Collections:||QUI - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
CQE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
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