Atomic Layer Deposition of zinc oxide for solar cell applications

Matthieu Moret (1) , A. Abou Chaaya (2) , Mikhael Bechelany (2) , Philippe Miele (2) , Yoann Robin (1) , Olivier Briot (1)

1 L2C - Laboratoire Charles Coulomb
2 IEM - Institut Européen des membranes

Atomic Layer Deposition (ALD) is a vapor phase thin film deposi- tion technique, performed at low substrate temperatures, which enables the deposition of extremely uniform thin films. This technique is scalable up to very large substrates, making it very interesting for industrial applications. On the other hand, ZnO, both undoped and aluminum doped is commonly used as a transparent electrode in solar cells based on Cu(In,Ga)Se 2 (CIGS), and is usually deposited by Physical Vapor Deposition techniques. In this paper, we investigate the potential of ALD for the deposition of ZnO windows for solar cell applications. Thin films of a few hundreds of nanometers were grown by ALD, both undoped and doped with aluminum. They were studied by X-ray diffraction, electrical trans- port measurements, Atomic Force Microscopy and transmittance experiments.

Mots clés: ZnO; Solar cells; Photovoltaic; Atomic Layer Deposition; X-rays diffraction; ALD; Resistivity

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Matthieu Moret, A. Abou Chaaya, Mikhael Bechelany, Philippe Miele, Yoann Robin, et al.. Atomic Layer Deposition of zinc oxide for solar cell applications. Superlattices and Microstructures, 2014, 75, pp.477-484. ⟨10.1016/j.spmi.2014.07.050⟩. ⟨hal-01064707⟩