Abstract. The present paper reports the study of Rhodamine 6G (R6G) in thin film form and its structural, optical and electrical characterization. The R6G films are found to have an amorphous structure as determined using the x-ray diffraction technique. The FTIR spectra of R6G thin film confirms that this molecule does not dissociate on being thermally evaporated and thus this technique can be used to deposit the thin films. The fluorescence and transmission spectra, of the thin film, show a redshift in peaks. Temperature dependence of dark conductivity (σ_d) and photoconductivity (σ_ph) measurements, in the temperature range 303–403 K, confirms that the conduction in R6G is through an activated process having a single activation energy. The photoactivation energy (E_ph) value is smaller in comparison to the activation energy in dark (E_d).

Print publication: Issue 12 (December 2009)
Received 27 January 2009, in final form 26 June 2009
Published 6 October 2009