Apart from the usual bound‐exciton luminescence due to Te and N centers, broader peaks which appear at high excitation may be explained by free‐carrier screening of the free excitons, or by high‐density excitonic effects. A weak‐luminescence structure observed around 2.8 eV, which has not been reported before, may be due to conduction electrons at theLpoint with holes at &Ggr;15bound to the neutral donors.