极地的
物理
辐射传输
量子阱
偶极子
材料科学
化学极性
异质结
分子物理学
自发辐射
作者
Andreas Hangleiter,Torsten Langer,Philipp Henning,Fedor Alexej Ketzer,Philipp Horenburg,Ernst Ronald Korn,Heiko Bremers,Uwe Rossow
摘要
Efficient radiative recombination is one of the key properties enabling high performance light emitting devices. We have performed an in-depth experimental analysis of radiative recombination in polar, nonpolar, and semipolar III-nitride quantum wells (QWs), which allows us to elucidate and quantify its mechanisms. We are able to distinguish between localized and free exciton recombination, we clearly see the effect of polarization fields via the quantum-confined Stark effect, and we observe the effect of the valence band structure associated with crystal orientation and strain.
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