One-pot synthesis of CIS nano-particles and their EMI shielding studies.

The pre-synthesized nano-CIS loaded in PVA was studied for EMI application in X-band. [Display omitted] • The first report on Study of CIS for EMI shielding. • Rapid, one-pot synthesis of copper indium sulphide nano-particles. • Effect of experimental parameter on particle size by XRD. • The method yields surface capped nano-particles. • The CIS/PVA films for potential X-band EMI shielding application. EMI Shielding behaviour of copper indium sulphide (CIS) nanoparticles synthesized by single-step method is presented. 1-Octadecene and oleic acid both play important role in the synthesis, however, presence of oleylamine leads to formation of phase pure CIS as confirmed by XRD. It is observed that incorporation of silver nanoparticles in 1:1 amount with respect to CIS, dramatically enhanced the shielding efficiency from about −3 dB to about −13.5 dB (average) of the CIS/PVA (0.5:1 w/w) composite in X-band. This is possibly the first study of CIS for EMI application. [ABSTRACT FROM AUTHOR]