Economical Buffer Layer Boosts Performance of Organic Solar Cells

Primary Inventors: 
Description: 

New compositions of matter have been invented, specifically organic buffer layer materials that can greatly enhance power conversion efficiency (PCE) of organic photovoltaic (OPV) devices and can effectively functionalize metal electrodes. Conventional-architecture OPV devices made using the new buffer layer have average PCEs greater than 8%, with the highest PCE value exceeding 9.5%. This new buffer layer can be used with Ag, Cu, and Au cathodes, opening routes to all-solution-based device fabrication and roll-to-roll processing. In addition, the new buffer layer materials can be applied at a layer thickness of up to 55 nm, avoiding processing challenges that occur with ultrathin buffer layers and enabling a simplified and reproducible process for device fabrication. 

Applications: 
  •  High performance organic solar cells
  •  High performance light emitting diodes
  •  Functionalized high performance metal electrodes with tunable work function 
Advantages: 
  • Simple OPV Device Architecture (non-inverted) 
  • Best Single Junction Solar Cell PCE > 9% 
  • Universal Compatibility (PCE > 8.5 % for Al, Ag, Cu & Au cathodes) 
  • Robust Adhesion to Photoactive Layer 
  • Economical Synthesis of Buffer Layer Material 
Licensing Status: 
Available for Licensing and/or Sponsored Research
Patent Status: 

Patent Pending

Docket: 
UMA 14-038
For More Information: 

Ling X. Shen, Ph.D., M.B.A.
Senior Licensing Officer
Commercial Ventures and Intellectual Property
Phone 413-545-5276
E-mail: lxshen@research.umass.edu