• English
  • Deutsch
  • Log In
    Password Login
    or
  • Research Outputs
  • Projects
  • Researchers
  • Institutes
  • Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Konferenzschrift
  4. Ultrasonically tinned PVD AL rear contacts on high-efficiency crystalline silicon solar cells for module integration
 
  • Details
  • Full
Options
2017
Conference Paper
Titel

Ultrasonically tinned PVD AL rear contacts on high-efficiency crystalline silicon solar cells for module integration

Abstract
We investigated ultrasonic tinning of physical vapor deposited (PVD) Al rear contacts on p-type passivated emitter and rear cells and n-type back junction cells, respectively. By means of electroluminescence (EL) imaging after ultrasonic tinning we identified small local damage of the cells' rear side passivation only at the positions where the soldering irons were initially placed on the Al. Though measured interconnector peel force was < 1 N/mm and hence lower then required by the standard DIN EN 50461, we obtained power degradation < 5 % after 400 thermal cycles, 2000 h in damp heat test and 20 cycles in the humidity freeze test, respectively, which is double the load demanded by the IEC 61215 standard. EL images revealed no local degradation induced by the climate tests. The microstructure of the tinned PVD Al is investigated by secondary electron microscopy and energy dispersive X-ray spectroscopy.
Author(s)
Nagel, H.
Eberlein, D.
Hoffmann, S.
Graf, M.
Steinhauser, B.
Feldmann, F.
Kraft, A.
Eitner, U.
Glatthaar, M.
Hermle, M.
Glunz, S.W.
Haverkamp, H.
Fischer, T.
Hain, A.
Wohlfart, P.
Mertens, V.
Müller, J.
Buck, T.
Hauptwerk
33rd European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2017
Konferenz
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) 2017
DOI
10.4229/EUPVSEC20172017-2AO.6.5
File(s)
N-477453.pdf (2.38 MB)
Language
English
google-scholar
Fraunhofer-Institut für Solare Energiesysteme ISE
Tags
  • Solarzellen - Entwicklung und Charakterisierung

  • Photovoltaik

  • Silicium-Photovoltaik

  • Herstellung und Analyse von hocheffizienten Solarzellen

  • metallization

  • integration

  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Send Feedback
© 2022