Electrical and optical properties of CZTS thin films prepared by SILAR method

Abstract

a b s t r a c tIn the present work, Cu 2 ZnSnS 4 (CZTS) thin film was deposited onto the glass substrate by simple and economic SILAR method and its structural, morphological, optical and electrical properties were analyzed Q2 . X-ray diffraction (XRD) analysis confirms the formation of CZTS with kesterite structure and the average crystallite size is found to be 142 nm. Scanning electron microscope (SEM) image shows that the film has homogeneous, agglomerated surface without any cracks. The prepared CZTS film shows good optical absorption (10 4 cm −1 ) in the visible region and the optical band gap energy is found to be quite close to the optimum value of about 1.54 eV for solar cell application. The refractive index of the prepared film is found to be 2.85. The electrical resistivity of the film is found to be ∼10 −2 cm at room temperature.

Chaotic signatures of photoconductive Cu2ZnSnS4nanostructures explored by Lorenz attractors

“…Figure 3 shows the optical absorption spectrum of the samples. This data matches with previous measurements in comparative samples [27,28]. In the ultraviolet region, close to 300 nm wavelength can be observed a well-defined peak associated with the SiO 2 substrate absorbance.…”

Effect of Type of Solvent on the Sol-Gel Spin Coated CZTS Thin Films

“…In addition, the superior crystalline and surface morphology can further lead to large grain size. And it is well reported that larger the grain size, smaller is the band gap [23]. Hence, attributed to the superior crystalline and surface morphology achieved with the film prepared by PG, the film depicted smaller and superior band gap, in the present study.…”

“…Figure 3 illustrates the Tauc's plot of thin film prepared using different solvents. However, the solvent variation doesn't affect much the optical properties of thin films as all films exhibited band gap in the range of 1.5-1.6eV, which is frequently reported [21][22][23]. 2 vs hʋ plot of thin film prepared using different solvents.…”

A review on growth optimization of spray pyrolyzed Cu 2 ZnSnS 4 chalcogenide absorber thin film

“…High equipment cost for large area deposition of thin films has made vacuum‐based approaches a poor choice. On the other hand, nonvacuum‐based fabrication methods such as chemical bath deposition, electrodeposition, spray pyrolysis, sol‐gel method, spin coating, dip coating, and SILAR have the advantage of economic and environmental cost.…”

“…Few reviews are available on this technique . A comprehensive review of the deposition of CZTS thin films through spray pyrolysis technique was not presented before.…”