where E_{g} is the bandgap. Consider a GaAs LED. The bandgap of GaAs at 300K is 1.42 eV, which changes (decreases) with temperature as dE_{g}/dT = -4.5 x 10^{-4} ev K^{-1}. What is the change in the emitted wavelength if the temperature change is 10^{o}C?