Raman Spectroscopy and Thermoelectric Characterization of Composite Thin Films of Cu₂ZnSnS₄ Nanocrystals Embedded in a Conductive Polymer PEDOT:PSS.

ABSTRACT: Cu₂ZnSnS₄ (CZTS) is an intensively studied potential solar cell absorber and a promising thermoelectric (TE) material. In the form of colloidal nanocrystals (NCs), it is very convenient to form thin films on various substrates. Here, we investigate composites of CZTS NCs with PEDOT:PSS, a widely used photovoltaics polymer. We focus on the investigation of the structural stability of both NCs and polymers in composite thin films with different NC-to-polymer ratios. We studied both pristine films and those subjected to flash lamp annealing (FLA) or laser irradiation with various power densities. Raman spectroscopy was used as the main characterization technique because the vibrational modes of CZTS NCs and the polymer can be acquired in one spectrum and thus allow the p

SUBMITTER: Havryliuk Y 

PROVIDER: S-EPMC9824269 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature