Low-frequency optical phonon modes and carrier mobility in the halide perovskite CH3NH3PbBr3 using terahertz time-domain spectroscopy

• Main Authors: Zhao, Daming, Skelton, Jonathan M., Hu, Hongwei, La-o-vorakiat, Chan, Zhu, Jian-Xin, Marcus, Rudolph A., Michel-Beyerle, Maria-Elisabeth, Lam, Yeng Ming, Walsh, Aron, Chia, Elbert E. M.
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2017
• Subjects: Phonons; Electronic Transport
• Online Access: https://hdl.handle.net/10356/86669; http://hdl.handle.net/10220/44183
• Institution: Nanyang Technological University

As a light absorber in photovoltaic applications, hybrid organic-inorganic halide perovskites should have long and balanced diffusion lengths for both the separated electrons and holes before recombination, which necessitates high carrier mobility. In polar semiconductors, the room-temperature carri...