论文标题
BAZRS3粉红色的葡萄糖蛋白酶的Ti合金用于光伏
Ti-alloying of BaZrS3 chalcogenide perovskite for photovoltaics
论文作者
论文摘要
BAZRS3是一种典型的硫代基因甲基，已显示出具有直接带隙，一个异常强的近边缘光吸收和良好的载体运输。因此，它的稳定性良好，无毒性与地球丰富的元素，因此是薄膜太阳能电池的有前途的候选者。但是，其报告的带隙在1.7-1.8 eV的范围内大于达到单个连接太阳能电池的冲击式 - 标题极限所需的最佳值。在这里，我们报告了具有减少带隙的Ba（Zr1-xtix）S3钙钛矿化合物的合成。发现Ti合金在BAZRS3的带隙降低方面非常有效：仅AT％合金降低了4个AT的4次，从1.78降低至1.51 eV，从而导致理论上的最大功率转换效率为32％。发现较高的Ti合金浓度会破坏扭曲的硫代基因盐钙钛矿相。
BaZrS3, a prototypical chalcogenide perovskite, has been shown to possess a direct band gap, an exceptionally strong near band edge light absorption, and good carrier transport. Coupled with its great stability, non-toxicity with earth abundant elements, it is thus a promising candidate for thin film solar cells. However, its reported band gap in the range of 1.7-1.8 eV is larger than the optimal value required to reach the Shockley-Queisser limit of a single junction solar cell. Here we report the synthesis of Ba(Zr1-xTix)S3 perovskite compounds with a reduced band gap. It is found that Ti alloying is extremely effective in band gap reduction of BaZrS3: a mere 4 at% alloying decreases the band gap from 1.78 to 1.51 eV, resulting in a theoretical maximum power conversion efficiency of 32%. Higher Ti-alloying concentration is found to destabilize the distorted chalcogenide perovskite phase.
