Photoluminescent properties of films of CdTe on glass grown by a hot-wall-close space vapor transport method

Cadmium telluride films on glass substrates were grown using a new hot-wall-close space vapor transport deposition system denominated gradient recrystallization and growth. Control of crystalline quality has been obtained through the temperature gradient in the system. Photoluminescence measurements in polycrystalline films show a crystal-like spectrum including exciton recombination and phonon emission, evidencing that good quality films can be obtained with this system. Ag diffusion in these films was used to get p-doped material. The Ag doped CdTe film shows an improved stability that does not show evidence of aging behavior.