Babatunde Falaye - Applied Theoretical Physics Division, Department of Physics, Federal University Lafia, P. M. B. ۱۴۶, Lafia, Nigeria
Sameer M Ikhdair - Department of Physics, Faculty of Science, An-Najah National University, New campus, P. O. Box ۷, Nablus, West Bank, Palestine- Department of Electrical Engineering, Near East University,Nicosia, Northern Cyprus, Mersin ۱۰, Turkey
Majid Hamzavi - Department of Physics, University of Zanjan, Zanjan, Iran

The shifted Tietz–Wei (sTW) oscillator is asgood as traditional Morse potential in simulating theatomic interaction in diatomic molecules. By using thePekeris-type approximation, to deal with the centrifugalterm, we obtain the bound-state solutions of the radialSchro¨dinger equation with this typical molecular model viathe exact quantization rule (EQR). The energy spectrum fora set of diatomic molecules.

Exact quantization rule Formula method Shifted Tietz-Wei potential