激子
电荷(物理)
物理
结合能
Crystal(编程语言)
谱线
电场
载流子
凝聚态物理
能量(信号处理)
原子物理学
量子力学
计算机科学
程序设计语言
作者
Ken’ichiro Tanaka,Takayuki Takahashi,Takashi Kondo,T. Umebayashi,Keisuke Asai,Kazuhiro Ema
标识
DOI:10.1103/physrevb.71.045312
摘要
We report a clear experimental evidence of the image charge effect on excitons in the optical and electroabsorption spectra of an inorganic-organic quantum-well crystal ${({\mathrm{C}}_{6}{\mathrm{H}}_{13}\mathrm{N}{\mathrm{H}}_{3})}_{2}\mathrm{Pb}{\mathrm{I}}_{4}$. The ns $(n\ensuremath{\geqslant}2)$ Wannier series are ideal two-dimensional excitons whose binding energies are enhanced by both the spatial confinement and image charge effects. Exceptionally large binding energy of the $1s$ exciton (361 meV) is also due to the prominent image charge effect. We also observed unique blueshifts of the $1s$ excitons under the electric field perpendicular to the quantum-well layers, for which we demonstrated with calculations that the image charge effect plays a significant role.
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