CAJ | 학술논문

采用溶剂热法,在环己烷-水体系中通过控制温度,在环己烷-水的液-液界面获得了由一维纳米棒组装而成的3种不同形貌的三维(3D)TiO2纳米材料,并对其组装的染料敏化太阳能电池(DSSC)的光电性能进行了分析。研究结果表明,温度对3DTiO2纳米材料的形貌有很大的影响,在60℃时,一维(1D)纳米棒只是组装成简单的3D球状结构；当温度升高至90℃和120℃时,形貌发生了明显的变化,球状结构转变为花状结构；当温度升高至150℃时,获得了海胆型形貌。由于形貌和粒径的影响,3DTiO2纳米材料对光的吸收能力以及比表面积均有明显地变化,从而导致其组装的 DSSC 的总光电转换效率差异很大,3 D海胆型TiO2纳米材料组装的DSSC的总光电转换效率最大。
채용용제열법,재배기완-수체계중통과공제온도,재배기완-수적액-액계면획득료유일유납미봉조장이성적3충불동형모적삼유(3D)TiO2납미재료,병대기조장적염료민화태양능전지(DSSC)적광전성능진행료분석。연구결과표명,온도대3DTiO2납미재료적형모유흔대적영향,재60℃시,일유(1D)납미봉지시조장성간단적3D구상결구；당온도승고지90℃화120℃시,형모발생료명현적변화,구상결구전변위화상결구；당온도승고지150℃시,획득료해담형형모。유우형모화립경적영향,3DTiO2납미재료대광적흡수능력이급비표면적균유명현지변화,종이도치기조장적 DSSC 적총광전전환효솔차이흔대,3 D해담형TiO2납미재료조장적DSSC적총광전전환효솔최대。
Three-dimensional (3D)TiO2 nanomaterials with different morphologies and op-tical properties are successfully synthesized at the liquid interface of cyclohexane and water through changing the temperature parameter of solvothermal.The results show that the temperature plays a significant role on the morphology of the 3D TiO2 nanomaterials.When the temperature is at 60 ℃,the one-dimensional (1D)nanorods just assemble into 3D spher-ical structure;as the temperature increases to 90 ℃ and 120℃,the morphology of 3D TiO2 nanomaterials changes obviously,the spherical structure changes into flower-like ones.With the temperature increasing to 150 ℃,perfect sea-urchin like 3D TiO2 nanomaterials can be obtained.Owning to the different morphologies and sizes of the samples,the absorption ca-pacity and special surface area of 3D TiO2 exhibit big difference,which could effect the over-all photoelectric conversion efficiency of DSSC in turn,the photoelectric conversion efficien-cy of DSSC is biggest that used the 3D sea-urchin like TiO2 nanomaterial as anode.