HIGH EFFICIENCY MULTISPECTRAL PHOTOVOLTAIC CELLS BASED ON III-V COMPOUND SEMICONDUCTORS FOR SOLAR CONCENTRATORS : THE RAINBOW PROJECT.

Objective

THE MAIN OBJECTIVE OF THIS R&D PROJECT IS THE ACHIEVEMENT OF HIGH CONVERSION EFFICIENCY OF SOLAR ENERGY.

MULTIBANDGAP CELLS IN THE PRESENT PROJECT ARE EXPECTED TO GIVE CONVERSION EFFICIENCIES IN THE RANGE OF 30% UNDER 100-500 CONCENTRATION RATIO. THE PROPOSED PHOTOVOLTAIC QUADRISPECTRAL STRUCTURE IS COMPOSED OF TWO MONOLITHIC TANDEMS: (ALGAAS-GAAS) AND (GAINAS-GAINASP) AND MUST BE VIEWED AS A HIGH EFFICIENCY GAAS "MASTER" CELL TOGETHER WITH THREE "BOOSTER" CELLS: (AL,GA)AS, (GA,IN)AS AND (GA,IN)(AS,P) CELLS. AN OTHER AIM OF THIS PROJECT IS TO DEMONSTRATE THE POSSIBILITY OF REPLACING THE GAAS SUBSTRATE BY SI SUBSTRATES. DURING THIS YEAR THE FOLLOWING MAIN POINTS HAVE BEEN STUDIED: CHARACTERIZATION OF DX CENTERS IN (GA,AL)AS IN RELATION WITH THE PHOTOVOLTAIC QUALIFICATION OF THIS MATERIAL, FEASIBILITY OF TUNNEL JUNCTIONS FOR TANDEM INTER CELL OHMIC CONTACTS, CHARACTERISATION OF GAINASP CELLS, GAAS/SI HETEROSTRUCTURE STRUCTURAL AND ELECTRONIC BEHAVIORS IN RELATION WITH PHOTOVOLTAIC REQUIREMENTS. DX CENTERS ARISE FROM A PARTICULAR BAND STRUCTURE CONFIGURATION IN N-TYPE GA1-XALXAS FOR .2200 ACM E-2) HAVE BEEN MEASURED. BEHIND A GAAS FILTER, THE LPE GROWN GA.29IN.71AS.63P.37 CELL HAS AN EFFICIENCY OF 3.2% (AMO, C=1). SO AN EFFICIENCY OF 8% CAN BE OBTAINED THROUGH A BICOLOR SYSTEM INVOLVING A GAAS CELL ASSOCIATED WITH EITHER A (GA,IN)AS OR A (GA,IN)(AS,P) CELL UNDER 100 CONCENTRATION RATIO. (GA,IN)AS AND (GA,IN)(AS,P) LPE GROWN TUNNEL DIODES HAVE PEAK CURRENTS OF 95.5ACM-E2 AND 2.2 ACM-E2 RESPECTIVELY. CONCERNING THE HETEROEPITAXY OF GAAS ON SI SUBSTRATES, GROWTH CONDITIONS HAVE BEEN IMPROVED AND MATERIAL PHOTOVOLTAIC BEHAVIORS ARE REPRESENTATIVE OF THE CURRENT STATE OF THE ART (NTT AND SERI CARRIER LIFETIME RESULTS). ACM E-2 AND 2.2 ACM E-2 RESPECTIVELY. CONCERNING THE HETEROEPITAXY OF GAAS ON SI SUBSTRATES, GROWTH CONDITIONS HAVE BEEN IMPROVED AND MATERIAL PHOTOVOLTAIC BEHAVIORS ARE REPRESENTATIVE OF THE CURRENT STATE OF THE ART (NTT AND SERI CARRIER LIFETIME RESULTS).

Fields of science (EuroSciVoc)

CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.

Programme(s)

Multi-annual funding programmes that define the EU’s priorities for research and innovation.

FP1-ENNONUC 3C - Research and development programme (EEC) in the field of Non-Nuclear Energy, 1985-1988

Topic(s)

Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

Data not available

Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

Data not available

Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

CSC - Cost-sharing contracts

Coordinator

Centre National de la Recherche Scientifique (CNRS)

EU contribution

No data

Address

Rue Bernard Grégory Parc de Valbonne Sophia Antipolis
06560 Valbonne
France

Total cost

No data

Objective

Fields of science (EuroSciVoc) CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.

Programme(s) Multi-annual funding programmes that define the EU’s priorities for research and innovation.

Topic(s) Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

Call for proposal Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

Funding Scheme Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.