论文标题
CH3NH3PBX3钙钛矿中的极性质量由低磁场中的Landau水平光谱法确定
Polaron Masses in CH3NH3PbX3 Perovskites Determined by Landau Level Spectroscopy in Low Magnetic Fields
论文作者
论文摘要
我们通过观察到弱磁场上的Landau水平和高阶激子，在CH3NH3PBX3铅卤化物钙钛矿中研究了电子 - 音波耦合，在弱磁场上，感染能量明显小于纵向光学声子能量。从这些数据中获得的载体和激子结合能的减少显然受极性形成的影响。我们分析了依赖于场的极性和激子特性，并表明它们可以通过Frohlich大极极模型进行定量再现。
We investigate the electron-phonon coupling in CH3NH3PbX3 lead halide perovskites through the observation of Landau levels and high-order excitons at weak magnetic fields, where the cyclotron energy is significantly smaller than the longitudinal optical phonon energy. The reduced masses of the carriers and the exciton binding energies obtained from these data are clearly influenced by polaron formation. We analyze the field-dependent polaronic and excitonic properties, and show that they can be quantitatively reproduced by the Frohlich large polaron model.
