Synthesis of Cu2ZnSnSe4 nanoparticles by colloidal method

Abstract

Recently the thin films of semiconductor compound Cu2ZnSnSe4 (CZTSe) have attracted the attention of scientific community as alternative layers of CuInSe2 (CIS), CuIn1-xGaxSe2 (CIGS) and CdTe for designing cheap thin film solar cells (SCs). This material has the optimum for conversation solar energy into electricity band gap (Еg = 1 eV), high absorption coefficient (α > 105 cm-1), p-type conductivity and it’s characterized long lifetime as well as high mobility of charge carriers. The colloidal synthesis is promising among nonvacuum chemical methods for obtaining CZTSe nanoparticles which allows synthesizing nanoparticles of a wide range of materials with the possibility of forming films using spin-coating, spray pyrolysis techniques. Also, it is important that the properties of the synthesized nanoparticles strongly depend on the shape and size. The above mentioned purpose main aim of this work which is to study the morphological characteristics and chemical composition of nanoparticles CZTSe with different sizes and shapes of the synthesized by colloidal method.