制备了一种新型铝颗粒弥散分布的纳米孔碳基复合材料,并以此作为对电极的催化层,研究了催化层厚度对该对电极染料敏化太阳能电池(DSC)光电性能的影响以及铝颗粒的作用机制.结果表明:随催化层厚度的增大,纳米孔碳基复合材料对电极DSC的转换效率先增后减,在催化层厚度为44μm时达到最大,为5.15％,比纯碳对电极DSC的增加21.5％;细小铝颗粒弥散分布于复合材料对电极中,起连接碳颗粒的桥梁作用,能够加快外电路电子传输,从而加速电解质还原,使催化层增厚提高催化活性的作用得以充分发挥,并抵消催化层增厚导致的方块电阻的升高效应,最终提升了DSC的转换效率.
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