Abstract—

Evolution of the fine structure of dislocation microphotoluminescence lines in cadmium telluride with a decrease in the optical-excitation power density has been demonstrated at low (5 K) temperatures. The character of this evolution for each of the three bands under investigation (Y₁ (~1.47 eV), Y₂ (~1.49 eV), and Y₃ (~1.51 eV)) indicates the existence of a transition from electron–hole plasma to exciton states. It is established that the fine structure of band Y₃ at the excitation densities of 0.1–0.01 W/cm² exhibits signs of formation of metastable states with participation of a dislocation core.

中文翻译：

---

碲化镉中位错核与电子-空穴系统相变的观察

摘要-

在低（5 K）温度下，随着光激发功率密度的降低，碲化镉中位错微光致发光线的精细结构得到了发展。对于研究中的三个频带（Y ₁（〜1.47 eV），Y ₂（〜1.49 eV）和Y ₃（〜1.51 eV））中的每个频带，这种演化的特征表明存在电子空穴等离子体的跃迁激子国家。可以确定的是，在激发密度为0.1-0.01 W / cm ^{2的情况下}，Y ₃带的精细结构在位错核的参与下表现出形成亚稳态的迹象。