Magonelli相二氧化钛光阳极在量子点敏化太阳能电池中的性能研究  

Research on the Performance of Magonelli Phase Titanium Dioxide Photoanode in Quantum Dot Sensitized Solar Cells

作　　者：姜义 戴怡乐[2] 王青[2] 谢贤菲[1] 戴剑锋 Jiang Yi;Dai Yile;Wang Qing;Xie Xianfei;Dai Jianfeng(State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China;School of Science,Lanzhou University of Technology,Lanzhou 730050,China;School of Science,Changchun Institute of Technology,Changchun 130000,China)

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [2]兰州理工大学理学院,甘肃兰州730050 [3]长春工程学院理学院,吉林长春130000

出　　处：《稀有金属材料与工程》2024年第5期1401-1408,共8页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(11664023)。

摘　　要：使用产量与性能稳定的工业化生产的黑色TiO_(2)制备成量子点敏化太阳能电池(QDSSCs)的光阳极,通过性能表征与理论计算研究,与常见的Anatase TiO_(2),Rutile TiO_(2)展开了全面对比。结果表明,由于氧空位的引入导致Magonelli Ti_(8)O_(15)的导带底下降,带隙收缩,吸收光谱范围由紫外光扩展至可见光与近红外,而且吸光度也极大提高。其阻抗也随之减小,明显低于Anatase TiO_(2),Rutile TiO_(2)。这导致其组装的QDSSCs的性能获得极大提升,尤其是FF与Jsc表现最为显著,最终获得了能量转换效率(power conversion efficiency,PCE)5.301%优异成绩。本实验进一步丰富了黑色TiO_(2)的研究,在工业化生产黑色TiO_(2)组装太阳能电池领域取得了阶段性成果,为太阳能电池的生产提供新的可能。Utilizing industrially produced black TiO_(2) with stable yields and performance to fabricate photoanodes for quantum dot sensitized solar cells(QDSSCs),comprehensive comparisons were conducted with commonly used Anatase TiO_(2) and Rutile TiO_(2) by performance characterization and theoretical calculations.The results indicate that the introduction of oxygen vacancies leads to a reduction in the conduction band minimum and a narrowing of the bandgap in Magonelli Ti_(8)O_(15),extending the absorption spectrum from ultraviolet to visible and near-infrared regions,accompanied by a significant enhancement in absorbance.Moreover,its impedance decreases markedly,notably lower than that of Anatase TiO_(2) and Rutile TiO_(2).Consequently,QDSSCs assembled with this material exhibit greatly improved performance,particularly in terms of fill factor(FF)and short-circuit current density(Jsc),ultimately achieving an outstanding power conversion efficiency(PCE)of 5.301%.This study contributes to the further understanding of black TiO_(2) and marks a significant advancement in the industrial application of black TiO_(2) in assembling solar cells,offering new possibilities for solar cell production.

关 键 词：TiO_(2) 量子点 太阳能电池 Magonelli Ti_(8)O_(15) 

分 类 号：TM914[电气工程—电力电子与电力传动]