access icon free Preparation and characterisation of Cu2FeSnS4 micro/nano particles by a liquid reflux method

Quaternary compounds Cu2FeSnS4 (CFTS), a promising alternative material for solar cell absorber layer, were successfully synthesised by a liquid reflux method in a mixture solvent of triethylenetetramine-ethylene glycol (TETA-EG, 1:1, v/v) at 230°C for 3 h under the atmospheric pressure condition. The phase, micro-structure, morphology, chemical composition and optical properties of the as-synthesised CFTS micro/nano particles were characterised using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectrometry and ultraviolet-visible absorption spectrophotometer. The results showed that the stannite structured CFTS micro/nano particles with close to theoretical stoichiometric ratio were pure and well-crystallised, the particle size ranged from 70 to 240 nm and the particles were well-distributed, the band gap was about 1.25 eV which indicated its suitable application as the absorption layer of thin film solar cells.

Inspec keywords: scanning electron microscopy; nanofabrication; organic compounds; ultraviolet spectra; iron compounds; X-ray diffraction; solar cells; visible spectra; particle size; copper compounds; crystal growth from solution; tin compounds; nanoparticles; X-ray chemical analysis

Other keywords: liquid reflux method; quaternary compounds; temperature 230 degC; chemical composition; ultraviolet-visible absorption spectrophotometer; microparticles; X-ray diffraction; energy dispersive X-ray spectrometry; triethylenetetramine-ethylene glycol; stannite structure; stoichiometric ratio; atmospheric pressure condition; size 70 nm to 240 nm; time 3 h; Cu2FeSnS4; particle size; microstructure; solar cell absorber layer; scanning electron microscopy; nanoparticles; morphology

Subjects: Low-dimensional structures: growth, structure and nonelectronic properties; Photoelectric conversion; solar cells and arrays; Crystal growth from solution; Electromagnetic radiation spectrometry (chemical analysis); Nanofabrication using crystal growth techniques; Visible and ultraviolet spectra of other nonmetals; Solar cells and arrays

http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2015.0479
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