Study of electron-hole drops in ZnTe single crystals
Baltrameyunas R., Kuokshtis E.
The luminescence spectra of ZnTe single crystals under strong optical excitation (Γ = 4.2 K) were investigated. It was observed that the luminescence spectrum consists of one emission line whose half-width and maximum depend little on the intensity of excitation. The results are explained on the basis of the model of emission of electron-hole drops (EHD). The binding energy of the drop (ζ0 = 2-3 meV) and the average carrier density in the drop (n0 = 2.5 XlO17 cm"3) are estimated by comparing the experimental data with the theoretical calculation of the emission line shape.
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![](/ps/1579/article_24224_800_head.png "The luminescence spectra of ZnTe single crystals under strong optical excitation (Γ = 4.2 K) were investigated. It was observed that the luminescence spectrum consists of one emission line whose half-width and maximum depend little on the intensity of excitation. The results are explained on the basis of the model of emission of electron-hole drops (EHD). The binding energy of the drop (ζ<sub>0</sub> = 2-3 meV) and the average carrier density in the drop (n<sub>0</sub> = 2.5 XlO<sup>17</sup> cm"<sup>3</sup>) are estimated by comparing the experimental data with the theoretical calculation of the emission line shape.")