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

被引：0
作者：
Tower, Collin [1 ]
Reedyk, Maureen [1 ]
机构：
[1] Brock Univ, St Catharines, ON L2S 3A1, Canada
来源：
2020 45TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2020年
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1109/IRMMW-THZ46771.2020.9370551
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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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页数：2
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