000136410 001__ 136410
000136410 005__ 20250926150152.0
000136410 0247_ $$2doi$$a10.1016/j.egypro.2014.08.011
000136410 0248_ $$2sideral$$a139333
000136410 037__ $$aART-2014-139333
000136410 041__ $$aeng
000136410 100__ $$aKäsewieter, Jörg
000136410 245__ $$aCracks in Solar Cell Metallization Leading to Module Power Loss under Mechanical Loads
000136410 260__ $$c2014
000136410 5060_ $$aAccess copy available to the general public$$fUnrestricted
000136410 5203_ $$aWe investigate the mechanisms leading to electrically insulated cell parts in a photovoltaic module under mechanical load. For this we measure the resistances across a crack in a laminated solar cell during bending that is typical in the field. The cracks in the solar cell are detected with electroluminescence imaging. The resistance over the aluminum paste increases continuously by negligible 30 mΩ whereas the front finger resistance increases by 15.4 kΩ stepwise. This difference is the result of the higher ductility of the aluminum paste in comparison to the front finger metallization. We associate the steps in the front finger resistance measurement to breakage of single fingers with an equivalent circuit model. Furthermore we found that a silicon crack widths lower 2 μm has no influence on the resistances. Crack widths higher than 7 μm leads to a complete front finger interruption. We determine that the specific resistance of such a crack causes nearly 100% of the power loss, which is caused by a completely electrically insulating crack in a photovoltaic module.
000136410 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000136410 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000136410 700__ $$aHaase, Felix
000136410 700__ $$0(orcid)0000-0003-0473-9104$$aHaro Larrodé, Marta
000136410 700__ $$aKöntges, Marc
000136410 773__ $$g55 (2014), 469-477$$pEnerg. procedia$$tEnergy procedia$$x1876-6102
000136410 8564_ $$s1156234$$uhttps://zaguan.unizar.es/record/136410/files/texto_completo.pdf$$yVersión publicada
000136410 8564_ $$s1587337$$uhttps://zaguan.unizar.es/record/136410/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000136410 909CO $$ooai:zaguan.unizar.es:136410$$particulos$$pdriver
000136410 951__ $$a2025-09-26-14:59:38
000136410 980__ $$aARTICLE