Centre National De La Recherche Scientifique

Electricite De France

Electricite De France - Service National

Centre National De La Recherche Scientifique-cnrs

Electricité De France, Société Anonyme

Stéphane Taunier

Daniel Lincot

Denis Guimard

Jean-François Guillemoles

Pierre-Philippe Grand

Negar Naghavi

Olivier Kerrec

Michel Mahe

Moëz Ben-Farah

Pierre Cowache

Jacques Vedel

Pierre Philippe Grand

The invention relates to a method for production of thin layers of semiconductor alloys of the I-III-VItype, including sulphur, for photovoltaic applications, whereby a heterostructure is firstly deposited on a substrate comprising a thin layer of precursor I-III-VIwhich is essentially amorphous and a thin layer, including at least some sulphur, the heterostructure is then annealed to promote the diffusion of the sulphur into the precursor layer and the at least partial crystallization of the I-III-VIalloy of the precursor layer with a stoichiometry which hence includes sulphur. A layer of selenium may also be deposited to assist the recrystallization processes or annealing.

Sulfurization and selenization of electrodeposited CIGS films by thermal annealing

The invention relates to a method of producing thin films of compound CIGS by means of electrodeposition. According to the invention, a surface-active compound, such as dodecyl sodium sulphate, is added to an electrolysis bath solution in order to promote the incorporation of gallium in the CIGS films.

Method of producing thin films of compound I-III-VI, promoting the incorporation of III elements in the film

The invention relates to the regeneration of an electrolysis bath for the production of I-III-VI&#x3c;SB&#x3e;Y&#x3c;/SB&#x3e; compounds in thin layers, where y is approaching 2 and VI is an element including selenium, whereby selenium is regenerated in the form Se(IV) and/or with addition of oxygenated water to reoxidise the selenium in the bath to give the form Se(IV).

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The invention concerns a method for making thin-film CIGS which consists in: electrochemically depositing on a substrate a layer of stoichiometry close to CuInSe; then rapidly annealing said layer from a light source with pulses of sufficient power to recrystallize CIS. Advantageously, the electrodeposited elements are premixed. Thus, after the deposition step, a homogeneous matrix is obtained which can support sudden temperature increases during the rapid annealing.

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Paris, France

Stéphane Taunier