Temperature-dependent optical properties of Pb1−xMnxSe films epitaxially grown on Zn0.04Cd0.96Te substrates
Temperature-dependent optical properties of Pb1−xMnxSe films epitaxially grown on Zn0.04Cd0.96Te substrates
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DOI：
10.1016/j.jallcom.2008.01.008
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发表时间：
2009-01
影响因子：
6.2
通讯作者：
Yi-hai Sun;Buhao Zhang;N. Dai;J. Si;Huizhen Wu;Ruoxin Zhang;Liming Chen
中科院分区：
文献类型：
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作者：
Yi-hai Sun;Buhao Zhang;N. Dai;J. Si;Huizhen Wu;Ruoxin Zhang;Liming Chen
We report temperature-dependent optical transmission studies on Pb1−xMnxSe films grown on Zn0.04Cd0.96Te substrates by molecular beam epitaxy. The measurements were carried out from liquid nitrogen temperature to room temperature and in the frequency range of 400–4000cm−1. The transition energy Egof 0.215eV, damping parameter Γ of 4.1meV, refractive index of 5.0, and Urbach bandtail parameter Euof ∼8meV were determined by fitting the experimental transmission spectra for Pb1−xMnxSe at, for instance, x=0.038 and 85K. Other parameters, such as absorption coefficient α, the oscillator strength A, and the background dielectric constant ɛ∞were also obtained. Temperature dependences of Γ and Euindicate stronger carrier–phonon interactions in the Pb1−xMnxSe films.
