Correlation between surface carbon concentration and adhesive strength at the Si cell/EVA interface in a PV module
- 23 November 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 01608371,p. 1217-1220
- https://doi.org/10.1109/pvsc.1997.654308
Abstract
Silicon solar cell/EVA composite is being studied with an objective to further improve the manufacturing technology of PV modules. Sample extraction and an adhesion strength measurement process has been modified. Silicon and EVA samples were extracted from solar cells of new and field-deployed modules. Optical microscopy, SEM, and AES of samples from new modules revealed EVA islands covering most of the silicon cell surface indicating a cohesive failure. A good correlation was observed between the adhesive strength and surface concentration of carbon. A low carbon concentration which indicated less EVA clinging to cell surface always resulted in low adhesive strengths. The correlation provides a simple technique for inferring properties of EVA.Keywords
This publication has 3 references indexed in Scilit:
- Encapsulation of PV modules using ethylene vinyl acetate copolymer as a pottant: A critical reviewPublished by Elsevier ,1999
- Investigation into the causes of browning in EVA encapsulated flat plate PV modulesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1994
- Characterization of ethylene vinyl acetate (EVA) encapsulant: Effects of thermal processing and weathering degradation on its discolorationSolar Energy Materials and Solar Cells, 1992