Stokes shift in F-band of additively coloured KCl(1-x)Brx mixed crystals was studied both experimental and theoretically. A maximum shift in x = 0 3 was obtained, indicating that a strong electron-phonon interaction takes place at this particular composition.
Bibliographical noteFunding Information:
This work was partially supported by DGlCSA-SEP and CONACyT (Mtxico). The authors thanks Professor H. Riveros and R. Guerrero (IFUNAM) for growing the crystals.