期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 45, 页码 31016-31024出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b11152
关键词
quinoxaline; auxiliary acceptors; sensitizer; quasi-solid-state; dye-sensitized solar cells
资金
- NSFC for Creative Research Groups [21421004]
- Programme of Introducing Talents of Discipline to Universities [B16017]
- Programme of Introducing Talents of Distinguished Young Scholars [21325625]
- NSFC/China
- Oriental Scholarship
- Fundamental Research Funds for the Central Universities [WJ1416005, WJ1315025]
- Scientific Committee of Shanghai [14ZR1409700, 15XD1501400]
To meet the requirement of high molar extinction coefficient, broad absorption spectrum, and photo/thermal stability for sensitizers of quasi-solid-state dye-sensitized solar cells (Qs-DSSCs) with reduced film thickness, a novel D-A-pi-A configuration organic sensitizer IQ22 was specifically designed, in which the conjugation bridge of cyclopentadithiophene (CPDT) unit was incorporated to widen the light response and enhance molar and the octane chain on CPDT was targeted for suppressing the (J(SC)) coefficients for increasing the short-circuit current density charge recombination and improving the open-circuit voltage (V-OC). As a result, the Qs-DSSC based on IQ22 exhibits very promising conversion efficiency as high as 8.76%, with a J(SC) of 18.19 mA cm(-2), a V-OC of 715 mV, and a fill factor (FF) of 0.67 under AM 1.5 illumination (100 mW cm(-2)), standing out in the Qs-DSSCs utilizing metal-free organic sensitizers.
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