论文标题
超长的电荷载体重组时间在甲基铵铅卤化物钙钛矿中
Ultra-long charge carrier recombination time in methylammonium lead halide perovskites
论文作者
论文摘要
由于它们的特性特性异常，因此对金属卤化物钙钛矿（MHP）进行了广泛的研究，以实现其在太阳能电池中的潜在应用。近年来，基于MHPS的太阳能电池的功率转换效率从最初的几个\％迅速增加到超过25 \，对于单连接设备的25 \％。因此，还考虑到其低成本和制造便利性，基于MHP的太阳能电池已成为最快的光伏技术。在这方面，最近的许多工作都是由基于甲基铵MHP的吸收材料主导的为三个父级Mapbx $ _3 $的各种结晶形式（即mapbcl $ _3 $，mapbbr $ _3 $和mapbi $ _3 $）执行。通过使用高质量因子（Q）微波谐振器，该方法与配备有自动频率控制（AFC）的市售微波桥和氦气流量低温恒温器配合使用。
Due to their exceptional photovoltaic properties, metal halide perovskites (MHPs) are extensively studied for their potential applications in solar cells. In recent years, the power conversion efficiencies of MHPs-based solar cells rapidly increased from the initial few \% towards more than 25\,\% for single-junction devices. Therefore, also taking into account their low costs and ease of manufacturing, MHPs-based solar cells have become the fastest-advancing photovoltaic technology. In this regard, much of the recent work has been dominated by absorber materials based on methylammonium MHPs, such as MAPbX$_3$, where MA=CH$_3$NH$_3$ and X=Cl, Br and I. Here, we present the results of contactless time-resolved photoconductivity measurements in an exceptionally wide range of temperatures of $4$ to $290\ \text{K}$ that were performed for the various crystalline forms of the three parent MAPbX$_3$, i.e., MAPbCl$_3$, MAPbBr$_3$ and MAPbI$_3$. This approach was made possible by the use of a high quality-factor (Q) microwave resonator, which cooperated with a commercially available microwave bridge equipped with an automatic frequency control (AFC) and a helium gas-flow cryostat.
