Evolution of Cu(In,Ga)Se2 surfaces under water immersion monitored by X-ray photoelectron spectroscopy

Solène Béchu (1) , Muriel Bouttemy (1) , Jacky Vigneron (1) , Daniel L. Lincot (2) , Jean-François Guillemoles (2, 3) , A. Etcheberry (1)

1 ILV - Institut Lavoisier de Versailles
2 IPVF - Institut Photovoltaïque d’Ile-de-France (UMR)
3 IPVF - Institut Photovoltaïque d'Île-de-France

Cu(In,Ga)Se2 absorbers were immerged in deionized water for different times, and specific chemical evolutions were monitored thanks to X-ray photoemission spectroscopy. Cu(In,Ga)Se2 related dissolution products were studied in water through induced coupled plasma optical emission spectroscopy. From those analyses, specific surface network disorganization was observed, with Cu migration towards the surface, leading to different kinetics of oxidation and dissolution for each element that could be quantified.

Mots clés: Cu(In; Ga)Se2; water aging; XPS; Cu(InGa)Se2; Photovoltaic

Domaines: Matériaux

Solène Béchu, Muriel Bouttemy, Jacky Vigneron, Daniel L. Lincot, Jean-François Guillemoles, et al.. Evolution of Cu(In,Ga)Se2 surfaces under water immersion monitored by X-ray photoelectron spectroscopy. Surface and Interface Analysis, 2020, ECASIA'19, 52 (12), pp.975-979. ⟨10.1002/sia.6896⟩. ⟨hal-03109149⟩