Heraeus introduces new front-side silver paste designed for DWC multicrystaline solar cells at PV Taiwan

New  paste  provides greater  adhesion  and  improves  conversion efficiency of  DWC cells.

Heraeus  Photovoltaics, the worldwide leading  supplier  of  metallization  solutions  to  the  PV  industry, announced  the  introduction  of  a new  paste  specifically  designed for Diamond-Wire-Cut (DWC)  multicrystaline  solar cells  at  the  PV  Taiwan International  Photovoltaic  Exhibition.   The  SOL9651D  series  front-side  silver paste  was  developed  by  Heraeus  in response to  the growing industry  adoption  of  DWC  multicrystaline solar cells  with  a specially  textured  surface.  Industry  analysts  expect  DWC  cells to  have  80% market  share by  the  end  of  2018.  Weiming  Zhang,  Senior Vice  President  and Chief  Technology  Officer of  Heraeus  Photovoltaics, noted that  the  development and  production of  the  SOL9651D  paste  was accelerated  to meet the cell’s  technical  requirements  and deliver superior performance.  He said,  “When  products  like DWC quickly  emerge  to become  the de-facto  industry  choice  for cell  manufacturers, it is  critical  that the  right  paste  be  ready  and capable  to  deliver. Heraeus  SOL9651D ensures  manufacturers  can  avoid  speed bumps  on  their  innovation roadmap.” The  launch  of  the  SOL9651D paste  series  marks  another milestone by Heraeus  to help  solar cell  companies  improve cell  efficiency, address  costs and stay  ahead  of  rapid technology  developments. For  companies  that  are using  DWC cells, SOL9651D is  specifically  designed  to provide a  wide range  of  capabilities  and  benefits, including:   Raising  the  conversion  efficiency  of  DWC cells  by  >0.1%   Superior  busbar  adhesion  and reliability  on  DWC cells  with Additive/MCCE/RIE-texturing   Ultra-fine-line compatibility  for additional  efficiency  gain on specially  textured  DWC cells   Balanced metallization  contact and  Voc  with  efficiency improvement   The availability  of  single,  double printing  and knotless  screen packages   The  new  glass  chemistry  was  developed to  provide  excellent  adhesion  of SOL9651D,  which allows  customers  to  optimize their  busbar  design for better  electrical  performance and cost reduction,  especially  on  DWC/ Black-silicon  texturing.  Additionally,  this  paste  series  has  a  wide  firing window,  which makes  the paste  specifically  suitable for the  application on PERC solar cells. It  shows  superior  adhesion for PERC cell  and is compatible for both multi  and  mono crystalline  wafers. As  testified by customers,  SOL9651D  Series  has  outstanding LID  (Light  Induced Degradation)  performance  by  reducing  the  negative  impact  of  irradiation  of the  charge carrier  lifetime.

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