A high purity amorphous spinel film (CdCr2S4) electrode composed of monodispersed grains has been successfully deposited on an ordinary glass and conducting glass (FTO) substrates from aqueous medium using a simple, inexpensive, reproducible chemical bath method at ambient temperature. The as-deposited film composed of small elongated particles of 100-150 nm in length and 10-20 nm in diameter aggregated into large monodispersed spherical clusters of 100-400 nm in diameter. Furthermore, the influence of this CdCr2S4 film electrode on photo-electrochemical properties was studied and reported. (c) 2006 Elsevier Ltd. All rights reserved.