|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications V
||Scalable Synthesis of Silicon-implanted CZTS Nanoparticles for Catalysis and Thermoelectrics
||Stephen Exarhos, Edgar Palmes, Alejandro Alvarez, Lorenzo Mangolini
|On-Site Speaker (Planned)
By its nature, CZTS is a very adaptable material system. It is relatively straightforward to alloy into the material primarily as a method of band gap control. By optimizing the band gap and band alignment of alloyed CZTS-like nanoparticles, we intend to improve the catalytic quality of CZTS-based heterostructures. Using aerosol spray pyrolysis, we process a solution with copper-, tin-, and zinc-diethyldithiocarbamate precursors to form phase-pure, surface-ligand-free, kesterite CZTS nanoparticles with a size distribution average of ~ 20 nm. By adding hydrogen-terminated silicon nanoparticles — synthesized in-house by a non-thermal plasma process — to the precursor solution, we can implant silicon into the material (making CZTSiS), and in turn widen the band gap. We present studies characterizing CZTS and CZTSiS nanoparticles for potential use as a photocatalytic heterostructure material, and also preliminary studies for their application as a bulk-nanostructured thermoelectric.
||Planned: Supplemental Proceedings volume