Enhanced performance of dye-sensitized solar cells based on TiO2 nanotube membranes using an optimized annealing profile.
Enhanced performance of dye-sensitized solar cells based on TiO2 nanotube membranes using an optimized annealing profile.
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DOI：
10.1039/c4cc08266d
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发表时间：
2015-01
影响因子：
4.9
通讯作者：
Fatemeh Mohammadpour;Mahmood Moradi;Kiyoung Lee;G. Cha;Seulgi So;A. Kahnt;D. Guldi;Marco Altomare;P. Schmuki;P. Schmuki
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文献类型：
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作者：
Fatemeh Mohammadpour;Mahmood Moradi;Kiyoung Lee;G. Cha;Seulgi So;A. Kahnt;D. Guldi;Marco Altomare;P. Schmuki;P. Schmuki
我们在正面光照的染料敏化太阳能电池（DSSCs）中使用独立的二氧化钛纳米管薄膜，这些薄膜被转移到氟掺杂氧化锡（FTO）玻片上。我们研究了在FTO基底上自有序阳极二氧化钛纳米管层的太阳能电池排列的关键参数，即退火过程对DSSC光转换效率的影响。结果表明，使用最佳温度退火曲线可以显著提高DSSC的效率（在我们的案例中，效率η = 9.8%），因为它导致纳米管氧化物中的陷阱态密度显著降低，从而极大地改善了电子传输性能。
We use free-standing TiO2 nanotube membranes that are transferred onto FTO slides in front-side illuminated dye-sensitized solar cells (DSSCs). We investigate the key parameters for solar cell arrangement of self-ordered anodic TiO2 nanotube layers on the FTO substrate, namely the influence of the annealing procedure on the DSSC light conversion efficiency. The results show that using an optimal temperature annealing profile can significantly enhance the DSSC efficiency (in our case η = 9.8%), as it leads to a markedly lower density of trapping states in the tube oxide, and thus to strongly improved electron transport properties.