弗吉尼亚大学的一群科学家们正在研究如何提高有机-无机杂化钙钛矿(HOIPs)晶体结构的稳定性,以延长此类材料性能的耐久性。
研究小组声称他们已经找到更好地处理HOIPs,使其效率更高、且在变化条件下长时保持效率的新方法。
让HOIPs分子旋转是延长电子寿命、提高能量转换效率的关键。研究人员使用了显微镜检测设备及具有高性能计算机模拟功能的测量技术,观察这些材料的变异分子结构。结果显示光激电子和空穴的再化合被筛分抑制,导致了极化子的形成,使寿命延长。因而他们认为,寻找到在较宽温度范围内高转动熵的有机–无机钙钛矿,可能是让太阳能电池达到卓越性能的关键。
该研究团队的HOIP基太阳能电池的当前效率记录为22%以上,可与一个标准硅太阳能电池的效率媲美。
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