High throughput via-metallization technique for multi-crystalline metal wrap through (MWT) silicon solar cells exceeding 16% efficiency

Clement, Florian; Menkoe, M.; Erath, D.; Kubera, T.; Hoenig, René; Kwapil, Wolfram; Wolke, W.; Biro, Daniel; Preu, R.

doi:10.1016/j.solmat.2009.06.020

Cited by 25 publications

(11 citation statements)

References 3 publications

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“…A reliable and continuous via metallization is essential in terms of low series resistance contribution for achieving high fill factors [7]. For conventional p-type silicon MWT cell structures with aluminum back surface field (MWT-BSF, Fig.…”

Section: Introductionmentioning

confidence: 99%

Electrical properties of the rear contact structure of MWT silicon solar cells

Lohmüller

Thanasa

Thaidigsmann

et al. 2015

Solar Energy Materials and Solar Cells

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Section: Introductionmentioning

confidence: 99%

Electrical properties of the rear contact structure of MWT silicon solar cells

Lohmüller

Thanasa

Thaidigsmann

et al. 2015

Solar Energy Materials and Solar Cells

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“…MWT/EWT technology has been regarded as industrially promising recently because of its high cost-effectiveness for increasing cell and module efficiency [47,48]. In the MWT/EWT cells, the front metal grids or the front emitter will be wrapped through the laser opened viaholes to the rear side of the wafer inducing reduced shading losses, and reduced surface recombination, and as a result the cell efficiency will be improved [49].…”

Section: Cell Structure Innovation: Advanced Architecturesmentioning

confidence: 99%

Recent Developments on Silicon Based Solar Cell Technologies and their Industrial Applications

Chen¹

2015

Energy Efficiency Improvements in Smart Grid Components

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“…In the following, modified rear side screen printing step, the n-contacts (busbars) and vias as well as the psoldering pads are metallized. This process is extended by a short suction step (≤ 1 second), to guarantee a reliable via metallization [5] with sufficiently low via resistances R via .≤ 8 mΩ (corresponds to a fill factor loss ≤ 0.1%abs.) [6].…”

Section: Experimental Approachmentioning

confidence: 99%

Paste development for screen printed mc-Si MWT solar cells exceeding 17% efficiency

Hoenig

Clement

Menkoe

et al. 2010

2010 35th IEEE Photovoltaic Specialists Conference

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Reducing costs per Wp is a major goal for the crystalline silicon solar cell industry in order to compete with electricity production costs from conventional energy resources. The MWT (metal wrap through) solar cell is a promising concept to reduce production costs by increasing efficiencies at the cell and module level significantly, without great additional effort. At the cell level, a significant efficiency gain of the MWT cell concept compared to standard solar cells is observable, mainly due to higher achievable short circuit currents. This gain in short current is more or less linear to the increase in the active cell area, which is achieved by eliminating the shadowing losses of the bus bars on the front side of the fully back contacted MWT solar cell. In addition to the front side paste, the via paste, which interconnects the front and back side of the MWT solar cell, is also a key component to exploit the efficiency potential of MWT solar cells. Since the end of 2007, Fraunhofer ISE has continuously increased MWT cell efficiency by applying newly developed via and front side pastes delivered by Heraeus. Paste improvements within this joint project work currently result in mc-Si MWT cell efficiencies of up to 17.1%

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High throughput via-metallization technique for multi-crystalline metal wrap through (MWT) silicon solar cells exceeding 16% efficiency

Cited by 25 publications

References 3 publications

Electrical properties of the rear contact structure of MWT silicon solar cells

Electrical properties of the rear contact structure of MWT silicon solar cells

Recent Developments on Silicon Based Solar Cell Technologies and their Industrial Applications

Paste development for screen printed mc-Si MWT solar cells exceeding 17% efficiency

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