Fluorine substituted conjugated polymer of medium band gap yields 7% efficiency in polymer-fullerene solar cells.

By Samuel C. Price, Andrew C. Stuart, Liqiang Yang, Huaxing Zhou, W. You. Journal of the American Chemical Society, 2011

1,455 citations recorded by the source corpus.

Recent research advances on conjugated polymers for photovoltaic devices have focused on creating low band gap materials, but a suitable band gap is only one of many performance criteria required for a successful conjugated polymer. This work focuses on the design of two medium band gap (~2.0 eV) copolymers for use in photovoltaic cells which are designed to possess a high hole mobility and low highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels. The resulting fluorinated polymer PBnDT-FTAZ exhibits efficiencies above 7% when blended with [6,6]-phenyl C(61)-butyric acid methyl ester in a typical bulk heterojunction, and efficiencies above 6% are still maintained at an active layer thicknesses of 1 μm. PBnDT-FTAZ outperforms poly(3-hexylthiophene), the current medium band gap polymer of choice, and thus is a viable candidate for use in highly efficient tandem cells. PBnDT-FTAZ also highlights other performance criteria which contribute to high photovoltaic efficiency, besides a low band gap.

Subfields: Electrical and Electronic Engineering, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/165b565c19d3534b932ca4f20e02338ac16fd876

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Electrical and Electronic Engineering

  1. Yang Yang
  2. Gang Li
  3. Z. Hong
  4. Jingbi You
  5. L. Dou
  6. Yongfang Li
  7. Jianhui Hou
  8. Alex K.-Y. Jen

In Polymers and Plastics

  1. Yang Yang
  2. Gang Li
  3. Z. Hong
  4. L. Dou
  5. Jingbi You
  6. Yongfang Li
  7. Jianhui Hou
  8. S. Choulis

Citations in the corpus