The effects of the hydrostatic pressure and temperature on binding energy and optical properties of a donor impurity in a spherical quantum dot under external electric field

► The electronic and optical properties of a spherical quantum dot are investigated. ► The presence of electric field, pressure and temperature pressure has a great influence on the binding energy. ► The absorption coefficients and the refractive index changes are strongly dependent on the external factors. ► The incident optical intensity and relaxation time considerably change the optical properties.