ゼロ次元ペロブスカイト量子ハイブリッドを用いた高効率陽電池に関する研究

在本财年，我们将开发一种方法，将甲基碘化铋(MABI)纳米晶体喷涂到加热的衬底上，并将它们集成到单结原型太阳能电池设备上。太阳能电池将通过喷雾和涂覆在不同温度下加热的热板上的衬底上的MABI纳米晶体胶体溶液来制备。太阳能电池的稳定性和性能将被表征。我们开发了一种在加热的衬底上喷涂MABI纳米晶的方法。通过在不同温度加热的热板上将MABI纳米晶体的胶体溶液喷雾涂覆在衬底上制备了器件。在前人工作的基础上，我们采用了一种新型的太阳电池结构：玻璃/掺铟二氧化锡/致密的二氧化钛/介孔二氧化钛/MABI纳米晶/螺环-MeOTAD/Au。然后使用太阳能模拟器和外部量子效率光谱仪对太阳能电池装置进行了表征。典型的钙钛矿型器件是基于MAPbI3和类似的混合物，当这些材料降解时，它们通常会形成PbI2，这是一种宽带隙绝缘体。然而，MABI的相变导致了BiI3的形成，它的禁带宽度为~1.7 eV，因此更有利于光伏应用。

In this fiscal year we will develop a method to spray-coat methylammonium bismuth iodide (MABI) nanocrystals onto heated substrates and integrate them to the single junction prototype solar cell devices. Solar cells will be prepared by combination of spray and coating the colloidal solution of MABI nanocrystals onto a substrate heated on a hotplate at various temperatures. The solar cell stability and performance will be characterized.We have developed a method to spray-coat MABI nanocrystals onto heated substrates. Devices were prepared by spray coating the colloidal solution of MABI nanocrystals onto a substrate heated on a hotplate at various temperatures. We employed a solar cell structure based on our previous works on perovskite solar cells and the device structure was as follows: Glass/Indium-doped Tin Oxide/Compact TiO2/mesoporous TiO2/MABI nanocrystals/spiro-MeOTAD/Au. The solar cell devices were then characterized using a solar simulator and external quantum efficiency spectrometer. Typical perovskite devices are based on MAPbI3 and similar concoctions, and when these materials degrade they generally form PbI2, which is a wide bandgap insulator. However, the phase change of MABI leads to the formation of BiI3 which has a bandgap of ~1.7 eV and is therefore more favourable for PV applications.