Cryogenic delamination: mathematical modeling and analysis of an innovative recycling process for photovoltaic crystalline modules

  • M. DassistiEmail author
  • G. Florio
  • F. Maddalena


The increasing rate of production and diffusion of photovoltaic (PV) technologies for industrial and domestic applications urges improvement of the sustainability of their demanufacuring processes in order to reduce the amount of electronic wastes. Sustainability of demanufacturing processes concerns the reduction of energy consumption, the reduction of polluting substances as well as the reduction of the effort spent in recovery of the components. No optimal process exists so far, provided a number of different approaches have been devised. A promising choice relies on the use of thermo-mechanical treatments for inducing a delamination process where interfacial bonding between layers are weakened and, finally, broken inducing delamination of the layers. In this view, the paper presents a preliminary theoretical industrialization study. We introduce a mathematical model based of the equations of thermo-elasticity to prove the feasibility of the technological process; the results of a Finite Element (FE) Analysis are then discussed to show the validity of the new sustainable demanufacturing process endeavouring the delamination process. The analysis is performed searching the optimal thermally induced cycles at cryogenic temperatures.


Sustainability Photovoltaic modules Thermoelasticity 



The authors are deeply indebted with Antonio De Nobili for the support in providing pictures as well as the useful discussions and comments. This work is supported by the project “Sustainable demanufacturing process for photovoltaic panels (SUD-PVP)” (MISE). G. Florio is supported by the Gruppo Nazionale per la Fisica Matematica (GNFM) of the Istituto Nazionale di Alta Matematica (INdAM) through “PROGETTO GIOVANI”, by INFN through the project “QUANTUM”, by MIUR through the FABBR research grant and PRIN 2017KL4EF3. F. Maddalena is supported by GNAMPA of the Istituto Nazionale di Alta Matematica (INdAM). This paper has been developed under the moral patronage of the “SOSTENERE” Group of the Italian Association of Mechanical Technologists (AITEM).


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© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Dipartimento di Meccanica, Matematica and ManagementPolitecnico di BariBariItaly
  2. 2.INFN, Sezione di BariBariItaly

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