改性SnO_(2)碳基钙钛矿太阳能电池的性能研究

Research on Performance of Modified SnO_(2)Carbon-based Perovskite Solar Cells

氧化锡(SnO_(2))电子传输层因优异的性能而广泛使用于钙钛矿太阳能电池,但SnO_(2)极易在表面形成氧空位以及氧化锡和钙钛矿之间界面缺陷问题会导致电荷传输受阻。本文通过在氧化锡电子传输层中掺入含有有机双官能团的脯氨酸来减少氧空位并调节电子传输层和钙钛矿之间的电子传输能力。SEM、XRD、J-V等测试证明脯氨酸的掺入改善了钙钛矿薄膜的形貌并增强了电子传输层的电荷传输性能,器件的光电转换效率(PCE)从11.15%提升到至14.49%。

SnO_(2) electron transport layer is widely used in perovskite solar cells due to its excellent properties.However,SnO_(2) tends to form oxygen vacancies on the surface and the interface defect between SnO_(2) and perovskite may cause the charge transport to be hindered.In this paper,by mixing Proline containing bifunctional groups into the electron transport layer of tin oxide to reduce oxygen vacancy and adjust the electron transport ability between the electron transport layer and perovskite.the SEM,XRD,J-V tests show that the addition of proline improves the morphology of perovskite film and enhances the charge transport performance of the electron transport layer.The photoelectric conversion efficiency(PCE)of the device is increased from 11.15%to 14.49%.