Tuning the Energy Level of Organic Sensitizers for High-Performance Dye-Sensitized Solar Cells
Data(s) |
2009
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Resumo |
Cost-effective organic sensitizers will play a pivotal role in the future large-scale production and application of dye-sensitized solar cells. Here we report two new organic D-pi-A dyes featuring electron-rich 3,4-ethylenedioxythiophene- and 2,2'-bis(3,4-ethylenedioxythiophene)-conjugated linkers, showing a remarkable red-shifting of photocurrent action spectra compared with their thiophene and bithiophene counterparts. On the basis of the 3-f{5'-[N,N-bis(9,9-dimethylfluorene-2-yl)phenyl]-2,2'-bis(3,4-ethylenedioxythiophene)-5-yl}2-cyanoacrylic acid dye, we have set a new efficiency record of 7.6% for solvent-free dye-sensitized solar cells based on metal-free organic sensitizers. Importantly, the cell exhibits an excellent stability, keeping over 92% of its initial efficiency after 1000 h accelerated tests under full sunlight soaking at 60 degrees C. This achievement will considerably encourage further design and exploration of metal-free organic dyes for higher performance dye-sensitized solar cells. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Xu MF;Wenger S;Bala H;Shi D;Li RZ;Zhou YZ;Zakeeruddin SM;Graetzel M;Wang P.Tuning the Energy Level of Organic Sensitizers for High-Performance Dye-Sensitized Solar Cells,JOURNAL OF PHYSICAL CHEMISTRY C ,2009,113(7):2966-2973 |
Palavras-Chave | #EFFICIENT MOLECULAR PHOTOVOLTAICS #INTENSITY-MODULATED PHOTOVOLTAGE #IONIC LIQUID ELECTROLYTES #SET MODEL CHEMISTRY #BAND-EDGE MOVEMENT #CHARGE-TRANSPORT #PHOTOCURRENT SPECTROSCOPY #RUTHENIUM SENSITIZERS #CO-SENSITIZATION #BACK-REACTION |
Tipo |
期刊论文 |