US EPA

1535190 

Journal Article 

AUTOBALANCED PHOTORECEIVER BASED ON ERBIUM CDS DOPED THIN FILMS 

Davila Pintle, JA; Reynoso Lara, E; Rendon Marin, M 

2008 

354-356 

10.1109/caol.2008.4671870 

WOS:000262361100111 

By employing chemical bath deposition, polycrystalline thin
films of CdS were grown on glass substrates. During the process of growth relative volumes of
nitrate of erbiurn penta- hydrate (Er(NO3)35H2O) were added in aqueous solution of CdS in order
to obtain different levels of doping, the samples obtained by this method were electrically and
optically characterized determining the dark conductivity, and photoconductivity in the 590 to
451 nm range respectively, afterwards, the most suitable sample with optimal electrical and
optical characteristics was chosen to develop an autobalanced photo receiver which uses the
photoconductive properties of CdS for electronically auto compensate the intensity difference
between the signal and reference sensor. 

photoconductivity; auto balanced; control