Exploring Temperature-Dependent bandgap and Urbach energies in CdTe thin films for optoelectronic applications

Date

2024-10-15

Author

Surucu, O.
SÜRÜCÜ, GÖKHAN
Hasanlı, Nızamı
Parlak, Mehmet
Isik, M.

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This study examines CdTe thin films deposited via RF magnetron sputtering, focusing on structural and optical properties. X-ray diffraction, Raman spectroscopy, and SEM assessed structural characteristics. Optical properties were analyzed through transmittance measurements from 10 to 300 K. Tauc plots and Varshni modeling revealed a temperature-dependent bandgap, increasing from 1.49 eV at room temperature to 1.57 eV at 10 K. Urbach energy rose from 82.7 to 93.7 meV with temperature. These results are essential for applications where temperature affects CdTe-based device performance.

Subject Keywords

Optical materials and properties, Solar energy materials, Sputtering, Thin Films

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85200135458&origin=inward
https://hdl.handle.net/11511/110766

Collections

Department of Physics, Article