Optical properties of phosphorene

• 来源期刊: 中国物理B（英文版）
• 关键词: two-dimensional material phosphorene exciton anisotropy
• 年，卷（期）: 2017,（3）
• 页码范围: 17-24
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1056/26/3/034201

摘要

Phosphorene is a two-dimensional semiconductor with layers-dependent bandgap in the near-infrared range and it has attracted a great deal of attention due to its high anisotropy and carrier mobility.The highly anisotropic nature of phosphorene has been demonstrated through Raman and polarization photoluminescence measurements.Photoluminescence spectroscopy has also revealed the layers-dependent bandgap of phosphorene.Furthermore,due to the reduced dimensionality and screening in phosphorene,excitons and trions can stably exist at elevated temperatures and have large binding energies.The exciton and trion dynamics are thus detected by applying electrical bias or optical injection to the phosphorene system.Finally,various optical and optoelectronic applications based on phosphorene have been demonstrated and discussed.