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Welcome to the 8th Back Contact workshop in Freiburg

The workshop will cover the latest developments in the field of back contact (BC) solar cells and modules. Challenges on the way to the industrialisation of the BC approach and examples for a successful transfer to mass production will be in the focus of the workshop. Material issues concerning module assembly will be also discussed in detail. The workshop lunchs, the dinner and several breaks will leave enough room for an exchange of views and thoughts.

PDF: Download the programme as PDF file, click here.


» Talk length: 15 min + 5 min questions
» Break length: 45 min

Tuesday // November 21, 2017

11:00 - 22:00

11:00 - 13:00 Registration
11:45 - 13:00 Lunch
13:00 - 13:10 Opening by Roman Keding (Fraunhofer ISE)

13:10 - 13:30

Invited talk by Katsunori Konishi (Kaneka)
Exceeding conversion efficiency of 26% by heterojunction
interdigitated back contact solar cell

13:30 - 15:00 Session 1: BC cell technology 1
  • Erik Hoffmann (IPV)
    Laser processed back contact solar cells
  • Roman Keding (Fraunhofer ISE)
    Progress on BC technology at ISE
  • Sören Schäfer (ISFH)
    Interdigitated back contact cells with passivating polycrystalline silicon
  • Bertrand Paviet-Salomon (CSEM)
    Interdigitated back-contacted silicon heterojunction solar cells featuring an interband tunnel junction enabling simplified processing
15:00 - 15:40 Coffee break
15:40 - 16:45 Session 2: BC cell technology 2
  • Jacques Levrat (CSEM / PASAN)
    A flexible solution for the measurement of complex solar cells
  • Tomihisa Tachibana (AIST)
    Effects of passivation layer on base region in back contact silicon solar cells with screen printed electrode
  • Gema López (UPC)
    IBC technology developed at UPC
16:45 - 17:30 Coffee break
17:30 - 18:35 Session 3: Alternative BC technologies & applications
  • Cham Thi Trinh (HZB)
    Progress on and potential of interdigitated back-contact silicon heterojunction solar cells for liquid phase crystallized silicon on glass
  • Guy Beaucarne (Dow Corning)
    To shingle or not to shingle, that is the question - Comparing shingled cells modules with conductive foil-based back-contact modules
  • Ulrich Eitner (Fraunhofer ISE)
    Customizable back-contact cells and module integration
19:00 Dinner (Restaurant Wolfshöhle, Konviktstrasse 8, 79098 Freiburg)
One-way bus shuttle

Wednesday // November 22, 2017

09:00 - 13:45

09:00 - 10:30 Session 4: BC module technology
  • Kees Broek (ECN)
    Benefits of operating a mini module BC baseline
  • Arvid von der Heide (IMEC)
    Reliability testing of MWT-PERT modules made with industrial solder-through interconnection
  • Andreas Halm (ISC Konstanz)
    Status of ZEBRA cell and module development
  • Ian Bennett (DSM)
    Materials and coatings for back contact module optimization
10:30 - 11:10 Coffee break
11:10 - 12:15 Session 5: Industrial production
  • Yizhan Chen (Wuyi University / TRINA)
    The latest progress of IBC solar cells pilot line in TRINA
  • Davide Spotti (Formula E / Trienergia)
    The Formula E approach to the back-contact cells and modules manufacturing
  • Bart de Gier / Nico van Ommen (Eurotron / Eurolab)
    Manufacturing of back contact modules
12:15 - 12:30 Closing
12:30 - 13:45 Lunch