Increasing p-type dye sensitised solar cell photovoltages using polyoxometalates.
Increasing p-type dye sensitised solar cell photovoltages using polyoxometalates.
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DOI：
10.1039/c7cp01558e
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发表时间：
2017-07
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通讯作者：
H. El Moll;Fiona A. Black;C. Wood;A. Al‐Yasari;A. Reddy Marri;I. Sazanovich;E. Gibson;J. Fielden-J.-Fi
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文献类型：
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作者：
H. El Moll;Fiona A. Black;C. Wood;A. Al‐Yasari;A. Reddy Marri;I. Sazanovich;E. Gibson;J. Fielden-J.-Fi
Lindqvist多金属氧酸盐（POM）添加剂使p型DSSCs中的VOC增加了140%，对于不匹配的染料和氧化还原介质产生了显著的效率提高。为了获得更好的染料/电解质组合，这些增益通常被JSC的损失所抵消。电荷寿命和瞬态红外测量表明，这是由于复合和电子向介质转移的延迟，以及NiO价带边缘的正位移。POMs也显示出其自身有限的致敏效应。
Lindqvist polyoxometalate (POM) additives increase VOC in p-type DSSCs by up to 140%, yielding substantial efficiency gains for poorly matched dyes and redox mediators. For better dye/electrolyte combinations, these gains are typically outweighed by losses in JSC. Charge lifetime and transient IR measurements show that this is due to retardation of both recombination and electron transfer to the mediator, and a positive shift in the NiO valence band edge. The POMs also show their own, limited sensitizing effect.