Large-area organic photovoltaic device with 14.5% efficiency

• The power conversion efficiency (PCE) of organic photovoltaics (OPV) has been significantly improved, with efficiencies approaching 20% ​​in small cells. Since the efficiency of module-level devices is still low, upgrading research is necessary to close the gap between cells and modules. Recently, Andreas Distler and others from the University of Erlangen-Nuremberg reported a large-area organic photovoltaic device with an efficiency of 14.5%.

  
  

  The author introduces device upgrades based on PM6:Y6-C12:PC61BM, which have almost no performance loss from small-area cells to large-area modules. Supported by computational fluid dynamics simulations, the authors developed an accelerated blade coating process that resulted in a uniform coating with thickness deviations of less than 5% over 200 cm².

  
  

  The authors used finite element simulations to optimize the module layout and reduce the losses due to electrode resistance and non-active interconnect area to 1.9% and 3.5% respectively. Finally, the authors fabricated a 204 cm² OPV module with a certified PCE of 14.5%.

  
  

• 
• 

• Robin Basu et.al Large-area organic photovoltaic modules with 14.5% certified world record efficiency Joule 2024

  
  

  DOI: 10.1016/j.joule.2024.02.016

  
  

  https://doi.org/10.1016/j.joule.2024.02.016