Community Research and Development Information Service - CORDIS

Solar cell manufacture: optical thermal processing

Research has been carried out with respect to the preparation and characterization of shallow P/N junctions realized by coupling nonanalyzed ion implantation of the dopant (or any kind of deposition technique) with a special transient optical heating technique which can operate in the liquid and solid phase regime.

Research was carried out in the following areas:
doping procedures (doped silicon presses);
transient annealing (rapid thermal processing in lamp furnaces);
characterization of the junction;
crossing comparison of the techniques;
solar cell manufacturing (15% efficiency for a single P/N junction).

Perspectives of a dry processing are being investigated in a new project.

The best result of this research was the realization of 15% conversion efficiency P/N junction silicon solar cells by employing a doping using doped silicon glasses to rapid thermal diffusion in a lamp furnace.

Reported by

Centre National de la Recherche Scientifique
23 rue du Loess BP 20
67037 Strasbourg
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