METHOD OF CONTROLLING THE COMPOSITION OF A PHOTOVOLTAIC THIN FILM

WIPO Patent Application WO/2011/029706

A3

A method of reducing the loss of elements of a photovoltaic thin film structure during an annealing process, includes depositing a thin film on a substrate, wherein the thin film includes a single chemical element or a chemical compound, coating the thin film with a protective layer to form a coated thin film structure, wherein the protective layer prevents part of the single chemical element or part of the chemical compound from escaping during an annealing process, and annealing the coated thin film structure to form a coated photovoltaic thin film structure, wherein the coated photovoltaic thin film retains the part of the single chemical element or the part of the chemical compound that is prevented from escaping during the annealing by the protective layer..

VAIDYANATHAN RAMAN (US)
DELIGIANNI HARIKLIA (US)
HOVEL HAROLD JOHN (US)

PCT/EP2010/062081

September 15, 2011

August 19, 2010

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IBM (US)
IBM UK (GB)
VAIDYANATHAN RAMAN (US)
DELIGIANNI HARIKLIA (US)
HOVEL HAROLD JOHN (US)

H01L31/032; H01L31/18; H01L31/0336

WO2008025057A1

2008-03-06

DE19917758A1	2000-10-19
FR2886460A1	2006-12-01
US5578503A	1996-11-26
US7026258B2	2006-04-11
US4335266A	1982-06-15

MOONS E ET AL: "EFFECT OF AIR ANNEALING ON THE ELECTRONIC PROPERTIES OF CDS/CU(IN,GA)SE2 SOLAR CELLS", SOLAR ENERGY MATERIALS AND SOLAR CELLS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 43, no. 1, 15 August 1996 (1996-08-15), pages 73 - 78, XP000627654, ISSN: 0927-0248, DOI: DOI:10.1016/0927-0248(95)00167-0

BURT, Roger, James (Intellectual Property LawHursley Park, Winchester Hampshire SO21 2JN, GB)

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