Abstract Poor electrical conductivity, interfacial charge carrier recombination, electrode degradation, etc., restrict practical implementation of the TiO2 based dye sensitised solar cells (DSSCs). In this respect, double perovskite oxides (DPOs) A2LuTaO6 (A = Ba, Sr, Ca) have been introduced as the promising DSSC photoanode. These solid-state synthesised DPOs exhibit a suitable wide band gap in the range of 2.94 to 4.07 eV, and 104 times higher order of electrical conductivity than TiO2. This study reveals that the crystal structure and hence the physical properties of these DPOs can also be easily modulated as required by varying its composition.

中文翻译：

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高导电性双钙钛矿氧化物 A2LuTaO6 (A= Ba, Sr, Ca) 作为染料敏化太阳能电池的有前途的光阳极材料

摘要 TiO2 基染料敏化太阳能电池（DSSCs）的导电性差、界面电荷载流子复合、电极退化等问题限制了其实际应用。在这方面，双钙钛矿氧化物 (DPO) A2LuTaO6 (A = Ba, Sr, Ca) 已被引入作为有前途的 DSSC 光阳极。这些固态合成的 DPO 具有合适的宽带隙，范围为 2.94 至 4.07 eV，电导率是 TiO2 的 104 倍。这项研究表明，这些 DPO 的晶体结构以及物理性质也可以通过改变其组成轻松地根据需要进行调节。