Technology introduction

Metal Wrap Through(MWT) is a new cell technology to increase the conversion efficiency by reducing the busbar-shaded area on the front side, with positive and negative electrodes on the same rear side.

  • Without busbars,decreasing shading area by 3%
  • 15W Module output higher than industry average
  • Eliminating the micro crack and degradation caused by string ribbons
  • Compatible with most of cell types including TOPCON, PERC, HIT, etc.

Why choose Sunport Power&MWT?

Sunport Power has successfully developed and patented high efficient solar cells and modules based on next generation MWT (metal wrap through) technology with GW-scale production capacity.

Technology Comparison

Compared with conventional module, MWT modules reduce 3% shaded area with no busbars. MWT module technology replaces string ribbon by conductive back sheet, abandoning strain, micro-crack and results power degradation, greatly improving stability and reliability.

— Structural Feature —

MWT

Positive and negative electrodes are both on the rear side of solar cell
Internal Structure Conventional

Conventional

Positive and negative electrodes are located on both sides of the cell

— Cell Structure —

Cell Structure mwt

MWT

Module exhibits higher output by decreasing shading area up to 3% without busbars on the surface
Cell Structure Conventional

Conventional

Conventional design covers more cell surface from the main busbars, therefore the power output is limited

— Module Encapsulation —

Encapsulation-Method-mwt

MWT

Cells connected through conductive foil without soldering, the 2D encapsulation structure reduces the series resistance and module operating temperature, achieving higher reliability.
Encapsulation-Method-Conventional2

Conventional

Cells connected by string ribbons will cause strain and micro-crack which result instability and power degradation

Technology Roadmap

MWT is BEYOND a technology but a platform that is compatible with most of cell types including TOPCon, PERC, HIT, …… MWT is the most PROMISING technology in the next decades.

MWT Solar Cell Roadmap

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