PBDTTT‐EFT

Classification

Thienothiophene, Benzodithiophene, Heterocyclic five-membered ring, Organic semiconducting materials, Low band gap polymers, Organic Photovoltaics, Polymer Solar Cells.

Applications

PCE10 (PTB7-Th, PBDTTT-EFT) is one of the new generation of OPV donor polymers that could deliver on the heralded 10/10 target of 10% efficiency and 10 years lifetime. Brand new to the Ossila catalogue, this material is already showing impressive potential with in excess of 9% efficiency reported in the literature and over 7% produced when using large area deposition processes in air with a standard architecture [1,2]. In our own labs we have achieved efficiencies of over 9%.
The advantages of PCE10 are that not only does the material lower HOMO/LUMO levels and increase the efficiencies compared to PTB7, but more significantly it is also far more stable. Early indications are that it can be handled under ambient conditions without issues, suggesting that we can look forward to measuring the long term lifetime of the devices.

Description

PCE10 (PTB7-Th, PBDTTT-EFT) is one of the new generation of OPV donor polymers that could deliver on the heralded 10/10 target of 10% efficiency and 10 years lifetime. Brand new to the Ossila catalogue, this material is already showing impressive potential with in excess of 9% efficiency reported in the literature and over 7% produced when using large area deposition processes in air with a standard architecture . In our own labs we have achieved efficiencies of over 9%.

Application

PCE10 is one of the most exciting materials to have made it out of the labs in recent years and offers huge potential for more in depth research. We''ll be working hard over the next few months to maximise efficiencies by optimising the device architecture, and we will provide further results as we do so. In the mean time, our current fabrication routine is below, and should you have any further questions or queries please contact us.

Uses

High-Efficiency Organic Solar Cells (OPVs)

OPV Device Structure: ITO/PEDOT:PSS/Polymer:PC71BM/ Al

• JSC = 19.8 mA/cm² \
• VOC = 0.79 V
• FF = 0.65
• PCE = 10.12%

General Description

Poly([2,6′-4,8-di(5-ethylhexylthienyl)benzo[1,2-b;3,3-b]dithiophene]{3-fluoro-2[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl}) (PTB7-Th) is a semiconducting polymer with a narrow band gap of 1.59 eV and an absorption peak at 780 nm. The devices fabricated from PTB7-Th have been shown to have higher output voltage and short circuit current density than PTB7.