Archives

• 1. Kinetics of First Order Phase Transformation in Se75Te19In6 Glass for Phase Change Memory By-  Archana Srivastava1*, S. N. Tiwari2, Anis Ahmad3, Shamshad A. Khan1  
  ( Posted On : 21-05-2017 )
• 2. Factors Affecting the Pace of Development Of Source of Nuclear Fusion Energy By-  Mohammad Imran Aziz  
  ( Posted On : 31-05-2017 )
• 3. Photovoltaic Cells: Present Scenario and Future Prospects By-  Tahira Khatoon*, Vishal Singh Chandel, Mohd Asim Siddiqui, Navshad Alam  
  ( Posted On : 31-05-2017 )
• 4. Hybrid Electricity Generation from Solar PV, Speed Breaker and Traffic Sound for Automatic Street Light By-  F. A. Khan1, M. Alam1 S. H. Saeed2, V. S. Chandel3, N. R. Kidwai4  
  ( Posted On : 31-05-2017 )
• 5. Calcium Copper Titanate CaCu3Ti4O12 (CCTO): A Substantial Substitute for Energy Storage Applications By-  Sachin Tripathi*, Navshad Alam, Mohd. Asim Siddiqui and Vishal Singh Chandel  
  ( Posted On : 07-06-2017 )
• 6. Perovskite Materials: Future Prospects for Energy Storage Applications By-  N. Alam1*, S. Tripathi1, M. A. Siddiqui1, V. S. Chandel1, T. Khatoon1, A. Azam2  
  ( Posted On : 09-06-2017 )

The present work describes the influence of thermal annealing in Se₇₅Te₂₂Cd₃ thin film. The bulk alloy of Se75Te22Cd3 was prepared by melt quenching method. The amorphous and glassy texture of the sample was verified by Differential Scanning Calorimetry (DSC) technique. Using thermal evaporation method, thin film of Se75Te22Cd3 alloy was deposited on glass substrate. For the study of influence of thermal annealing, films were annealed for 2 hours at two different temperatures 338 K and 348 K which is in between glass transition (Tg) and crystallization temperature (Tc) of the prepared sample. The X-Ray diffraction measurement was done for both as-prepared and annealed films for phase transformation studies. It confirms the amorphous texture of as-prepared film and crystalline texture of annealed films. From optical measurement the nature of optical transition was found to be indirect in nature. The absorption coefficient (α) and extinction coefficient (k) increases with increasing the incident photon energy and annealing temperature, while the optical band gap decreases with annealing temperature. For electrical studies dc-conductivity measurement was done at different temperature in the range 298 K to 428 K. From the dc-conductivity we found that the dc-conductivity increases with temperature and annealing temperature. The activation energy (ΔEc) decreases as annealing temperature increases. The outcome of these studies enables us that we can use this material in optical data storage.

- Ravi P. Tripathi1*, Vishal Singh Chandel2, Shamshad A. Khan1 *