染料敏化太阳能电池碳对电极的制备及性能

Preparation and Properties of Carbon Counter Electrodes for Dye-sensitized Solar Cells

用超声破碎法制备染料敏化太阳能电池的碳对电极:以炭黑纳米颗粒和石墨粉为原料,通过超声破碎制备均匀分散浆料,并将浆料丝网印刷在氟掺杂的氧化锡导电玻璃上得到碳对电极。与溅射法制备的铂对电极相比,超声破碎法制备的碳对电极具有更快的电荷传递速率;用碳对电极组装的电池在标准太阳光(AM1.5、100 mW/cm2)下的光电转换效率达到铂电极电池的81%,碳对电极电池在400～800 nm可见光区域内的单色光光子-电子转换效率高于铂对电极电池的。

Carbon counter electrodes of dye-sensitized solar cells were prepared by ultrasonic cell disruptor. Carbon paste, composed of carbon black nano-particles and graphite powders, were dispersed uniformly by the ultrasonic cell disruptor. Then, the carbon paste was screen printed on a fluorine-doped transparent conducting oxide glass to obtain carbon counter electrodes. Compared with Pt counter electrodes produced by sputtering, the carbon counter electrodes show a faster charge transfer rate. The light-to-energy conversion efficiency of the cells assembled with carbon counter electrodes reached up to 81% of that with Pt counter electrodes under AM1.5 and 100 mW/cm 2 illumination. The dye-sensitized solar cells with the carbon counter electrodes reveal a higher light-to-energy conversion efficiency of monochromatic light than the ones with Pt counter electrodes at 400–800 nm visible light area.