Photovoltaic with superior crack resistance

Project Information

PHYSIC

Grant agreement ID: 737447

DOI

10.3030/737447

Project closed

EC signature date 18 November 2016

Start date 1 January 2017

End date 30 June 2018

Funded under

• EXCELLENT SCIENCE - European Research Council (ERC)

Total cost

€ 149 500,00

EU contribution

€ 149 500,00

Coordinated by

SCUOLA IMT (ISTITUZIONI, MERCATI, TECNOLOGIE) ALTI STUDI DI LUCCA
Italy

Periodic Reporting for period 1 - PHYSIC (Photovoltaic with superior crack resistance)

Reporting period: 2017-01-01 to 2018-06-30

Summary of the context and overall objectives of the project

Cracks in silicon solar cells composing photovoltaic (PV) modules are originated from production, transportation, installation, and exposure of the modules to the environment. The economic impact of cracking in PV modules can been assessed in about 6 Euro/(kWp year) due to the cost of repair/substitution and the missing electric production while cracks are not yet observable. This has a clear huge technological and economic impact on the market, and it can be estimated in about 180 MEuro/year of losses, by considering a conservative amount of 30 GWp of new installations in the World per year. If cracking cannot be avoided due to the intrinsic brittleness of silicon, the present ERC Proof of Concept has proposed a new technological method to limit the effect of cracking as much as possible, and it has proved its feasibility by realising prototypes at the laboratory scale. Specifically, a pre-stressing technique has been proposed to increase residual compressive stresses in silicon and induce crack face contact and electric recovery, consistently with the key findings obtained within the ERC StG CA2PVM project. As a result, a patent application has been made on the innovative PV laminator for the application of pre-stressing and on the innovative design of the PV modules that can be produced with this technology.