Comparison of new conductive adhesives based on silver and carbon nanotubes for solar cells interconnection
Source abstract
Abstract
Abstract The interconnection of solar cells is one of the main process steps in photovoltaic module production. Usually solar cells are connected into strings by soldering. Due to cell thickness reduction and substantial changes of solar cell metallization, alternative interconnection techniques are required. The thermomechanically induced stress, caused by high soldering temperature and different coefficients of thermal expansion limits the long term reliability of the modules. The use of conductive adhesive enables the reduction of this thermomechanically induced stress significantly. Furthermore, conductive adhesive enables interconnection of new cells and interconnector concepts, such as heterojunction solar cells with their heat sensitive surface. Relatively costly silver (Ag) based conductive adhesives are commercially available. For cost reduction and for increase in long-term reliability reasons a carbon nanotube (CNT) based conductive adhesive has been produced and investigated. Single cell modules have been built using CNT and Ag based conductive adhesives and compared. Electroluminescence, power measurement, and contact resistance measurement among other tools have been used for evaluation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Nanowire Synthesis and Applications · Nanotechnology research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
Show source-provided references
1. Improving thin-film crystalline silicon solar cell efficiencies with photonic crystals10.1364/OE.15.016986 ↗
2. Solar cells: past, present, future10.1016/S0927-0248(02)00042-9 ↗
3. T. Kinoshita, D. Fujishima, A. Yano, A. Ogane, S. Tohoda, K. Matsuyama, Y. Nakamura, N. Tokuoka, H. Kanno, H. Sakata, M. Taguchi, E. Maruyama, The approaches for high efficiency HIT™ solar cell with very thin (<100μm) silicon wafer over 23%, in: Proceedings of the 26th European Photovoltaic Solar Energy Conference, Hamburg, Germany, 2011 871–874.
4. P.-J. Ribeyron1, D. Muñoz, J.-P. Kleider, W. Favre, P. Rocai Cabarrocas, M. Labrune, B. Geerligs, A. Weeber, M. Späth, C. Olson, N. Dekker, G.J.H.M. van Sark, J.A. Schüttauf, J.K. Rath, R.E.I. Schropp, M. Tucci, S. De Iuliis, I. Gordon, B. O'Sullivan, A. Descoeudres, S. De Wolf, C.Ballif, T. Schultze, L. Korte, F. Madon, N. Le Quang, M. Scherff, R. Doll, Y. Zemen, G. Zietek, European record efficiency amorphous-crystalline–silicon heterojunction solar cells: final results from the Hetsi project, in: Proceedings of the 26th European Photovoltaic Solar Energy Conference, Hamburg, Germany, 2011 853–857.
5. Y. Zemen, T. Prewitz, T. Geipel, S. Pingel, J. Berghold. The impact of yield strength on the interconnector on the internal stress of the solar cell within a module, in: Proceedings of the 25th European Photovoltaic Solar Energy Conference, Valencia, Spain, 2010 4073–4078
6. J. Wendt, M. Träger, M. Mette, A. Pfennig, B. Jäckel, The link between mechanical stress induced by soldering and micro damage in silicon solar cells, in: Proceedings of the 24th European Photovoltaic Solar Energy Conference, Hamburg, Germany, 2009 3420–3423
7. A.M. Gabor, M. Ralli, S. Montminy, L. Alegria, C. Bordanaro, J. Woods, L. Felton, Soldering induced damage to thin Si solar cells and detection of cracked cells in modules, in: Proceedings of the 21st European Photovoltaic Solar Energy Conference, Dresden, Germany, 2006.
8. W. Hermann (TÜV Nord), Proceedings of the Accelerated Lab Testing PV Module Reliability Workshop, Berlin, 2011.
9. X. Lin, F. Lin, The improvement on the properties of silver-containing conductive adhesives by the addition of carbon nanotubes, in: Proceedings of the 6th IEEE CPMT Conference, Shanghai, China, 2004 382–384.
10. Mechanical and electrical properties of a MWNT/epoxy composite10.1016/S0266-3538(02)00129-X ↗
11. Rheological and electrical transitions in carbon nanotube/epoxy suspensions10.2174/157341310790945669 ↗
12. Rheological behavior of multiwalled carbon nanotube/polycarbonate composites10.1016/S0032-3861(02)00151-9 ↗
13. Rheological and dielectrical characterization of melt mixed polycarbonate-multiwalled carbon nanotube composites10.1016/j.polymer.2004.10.040 ↗
14. Shear rheology of carbon nanotube suspensions10.1007/s00397-009-0422-4 ↗
15. Fundamental aspects of nano-reinforced composites10.1016/j.compscitech.2005.01.014 ↗
16. Advances in the science and technology of carbon nanotubes and their composites: a review10.1016/S0266-3538(01)00094-X ↗
17. A review and analysis of electrical percolation in carbon nanotube polymer composites10.1016/j.compscitech.2008.06.018 ↗
18. Improving electrical conductivity and thermal properties of polymers by the addition of carbon nanotubes as fillers10.1557/mrs2007.234 ↗
19. Improvement in electrical, thermal and mechanical properties of epoxy by filling carbon nanotube10.3144/expresspolymlett.2008.6 ↗
20. Carbon nanotubes as integrative materials for organic photovoltaic devices10.1039/B713798M ↗
21. Ultra-low electrical percolation threshold in carbon-nanotube–epoxy composites10.1016/S0032-3861(03)00539-1 ↗
22. Carbon nanotube-reinforced epoxy-composites: enhanced stiffness and fracture toughness at low nanotube content10.1016/j.compscitech.2004.04.002 ↗
23. Electrical conductivities of multi-wall carbon nano tubes10.1016/S0379-6779(98)00221-5 ↗
24. H. Fecht, et. al., Advanced adhesives based on carbon nanotube technology, in: Proceedings of the 2nd European Conference on Smart Systems Integration and Exhibition on Integration Issues of Miniaturized Systems, 2008 161–164.
25. P. Sanchez-Friera, et al. Power losses in c-Si-PV modules due to interconnection, in: Proceedings of the 23rd EU PVSEC, 2008 2701–2704.
26. Shear influenced network dynamics and electrical conductivity recovery in carbon nanotube/epoxy suspensions10.1016/j.polymer.2010.09.027 ↗
27. Comparison of rheological and electrical percolation phenomena in carbon black and carbon nanotube filled epoxy polymers10.1007/s10853-010-4788-6 ↗
28. Piezoresistive response of epoxy composites with carbon nanoparticles under tensile load10.1103/PhysRevB.80.245437 ↗
29. Mechanical properties of multiwall carbon nanotubes/epoxy composites: influence of network morphology10.1016/j.carbon.2003.12.026 ↗
30. Analytic findings in the electroluminescence characterization of crystalline silicon solar cells10.1063/1.2431075 ↗
31. On the detection of shunts in silicon solar cells by photo- and electroluminescence imaging10.1002/pip.803 ↗
32. Electric anisotropy of carbon nanofibre/epoxy resin composites due to electric field induced alignment10.1016/S0266-3538(03)00019-8 ↗
33. Electric field-induced aligned multi-wall carbon nanotube networks in epoxy composites10.1016/j.polymer.2004.11.081 ↗
34. Characterization of the state of dispersion of carbon nanotubes in polymer nanocomposites10.1002/cite.201100046 ↗
35. S.T. Buschhorn, Patent PCT/EP2011/052862.