Cairo University

MTPR Journal

 

LOW TEMPERATURE PHOTOLUMINESCENCE AND PHOTOCONDUCTIVITY OF ZnSexTe1-x TERNARY ALLOYS

& doi: https://doi.org/10.1142/9789814317511_0026
A. SALAH, G. ABDEL FATTAH, I.K. ELZAWAWY and Y. BADR
National Institute of Laser Enhanced Science (NILES), Cairo University, Egypt
National Institute of Laser Enhanced Science (NILES), Cairo University, Egypt
Solid State Physics Department, National Research Center (NRC), Cairo, Egypt
National Institute of Laser Enhanced Science (NILES), Cairo University, Egypt




Vol./Issue: 11 , id: 329

We investigated Low-Temperature Photoluminescence (PL) spectra of ZnSexTe1-x were grown from the melt where 0≤x≤0.202, the spectra of ZnSexTe1-x showing a broad band which may be attributed to self activated emission, The broad self activated (SA) emission band have been assigned to various crystalline defects, such as dislocations and vacancies or their combination with impurities. The room temperature photoelectric response spectra of ZnSexTe1-x samples (0≤x≤1) were measured, a single band was observed in the band edge region which attributed to the generation of more number of free charge carriers in the band gap region. The relaxation time was determined from studying the kinetics of photoconductivity