Jump to main content
Jump to site search


Spray deposition of AgBiS2 and Cu3BiS3 thin films for photovoltaic applications

Abstract

Spray pyrolysis of bismuth(III) tris(4-methylbenzodithioate) toluene solutions containing either silver(I) acetate and 1 octanethiol, or copper(I) acetate and 1,2-ethane dithiol is introduced as a low-temperature solution-based method to produce sub-100 nm thick coatings of α cubic rock salt AgBiS2 and orthorhombic Cu3BiS3. The structure, morphology and optoelectronic properties of the materials thus obtained have been comprehensively characterized using conventional techniques. Extensive optimization of the deposition conditions has been undertaken to achieve the formation of uniform, 60–70 nm thick films of densely packed AgBiS2 and Cu3BiS3 crystallites with a typical size of 10–20 nm. Planar photovoltaic devices based on spray-deposited AgBiS2 as a light harvester, ZnO as an electron transporting layer, and spiro-OMeTAD as a hole transporting material produce short-circuit current densities as high as 18.1 ± 0.6 mA cm−2 under 1 sun AM1.5G irradiation. The devices are stable without encapsulation under ambient conditions for at least 1 month.

Back to tab navigation

Supplementary files

Publication details

The article was accepted on 28 Jan 2018 and first published on 29 Jan 2018


Article type: Paper
DOI: 10.1039/C7TC05711C
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
  •   Request permissions

    Spray deposition of AgBiS2 and Cu3BiS3 thin films for photovoltaic applications

    N. Pai, J. Lu, D. Senevirathna, A. Chesman, T. R. Gengenbach, M. Chatti, U. Bach, P. C. Andrews, L. Spiccia, Y. Cheng and A. N. Simonov, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C7TC05711C

Search articles by author

Spotlight

Advertisements