卤化物双钙钛矿Cs2AgBiBr6在带隙共振下的太赫兹振动模式

2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2020-11-08 DOI:10.1109/IRMMW-THz46771.2020.9370551

Collin Tower, M. Reedyk

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引用次数: 0

摘要

Cs2AgBiBr6是卤化物双钙钛矿家族的一员，具有很高的光伏效率。我们用控制冷却的方法从溶液中合成了CS2AgBiBr6单晶。通过温度相关的拉曼散射研究了带隙共振附近的太赫兹振动模式，并辅以带隙本身的光学透射测量。532.8 nm激光在5.36太赫兹处显示出非常强的共振，峰值在30k处。

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THz Vibrational Modes of Halide Double Perovskite Cs2AgBiBr6 at Band Gap Resonance

Cs2AgBiBr6 is a member of the halide double perovskite family with high photovoltaic efficiency. We have synthesized single crystals of CS2AgBiBr6 from solution using a controlled cooling method. The THz vibrational modes near band gap resonance were investigated by temperature dependent Raman scattering, supplemented by optical transmission measurements of the band gap itself. With a 532.8 nm laser the mode at 5.36 THz shows a very strong resonance peaked at 30 K.

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2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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