Now Available: Materials for Non-Fullerene Polymer Solar Cells
Posted on Thu, Nov 09, 2017 by Hunan Yi
Non-fullerene polymer solar cells (NF-PSCs) have recently received great interest in academic and industrial research fields. This is partly due to the continuous development of polymer semiconductors as donor materials for OPVs during the last 20 years [1-3]. NF-PSCs include either small molecules (such as ITICs or polymers) as acceptors, but both with polymers as donor materials. Tremendous efforts have also been devoted to the development of non-fullerene acceptors due to the advantages they offer, such as:
i) Easy synthesis, with the possibility to tune energy levels of such acceptors - unlike fullerenes, which have limited energy-level tunability
ii) Strong absorption in the visible region and good thermal stability (when compared to fullerenes with weak absorption)
iii) Structural morphology of bulk heterojunctions formed with non-fullerene materials have improved stability in comparison to heterojunctions that are formed using traditional fullerene materials
At Ossila, we understand your desire to be at the forefront of OPV research - and we are dedicated to helping you achieve this by bringing the most advanced material structures to your lab. As such, we have developed a collection of NF-PSC polymer donor and acceptor materials, such as TQ1 and PNF222 (for further information, please see our LuminosynTM collection of polymers).
A power conversion efficiency (PCE) of 11.77% has been reported for non-fullerene PSCs with m-ITIC as acceptor and a medium band-gap polymer J61 as donor . Additionally, an outstanding PCE of 12.2% has been reported for ternary PSCs based on PBDB-T:IT-M:BisPCBM (1:1:0.2) . All polymer solar cells with PNDI(2OD)2T as an acceptor and J51 as a donor (fullerene-free) have demonstrated a power conversion efficiency over 8% .
- Polymer Photovoltaic Cells: Enhanced Efficiencies via a Network of Internal Donor-Acceptor Heterojunctions, G. Yu et al., Science, 270, (5243), 1789-1791 (1995); DOI: 10.1126/science.270.5243.1789.
- Efficient photodiodes from interpenetrating polymer networks, J. J. M. Halls et al., Nature 376, 498 - 500 (2002); doi:10.1038/376498a0.
- Energy-Level Modulation of Small-Molecule Electron Acceptors to Achieve over 12% Efficiency in Polymer Solar Cells, S. Li et al, Adv. Mater., 28, 9423–9429 (2016); DOI: 10.1002/adma.201602776.
- Side-Chain Isomerization on an n‑type Organic Semiconductor ITIC Acceptor Makes 11.77% High Efficiency Polymer Solar Cells, Y. Yang et al., J. Am. Chem. Soc., 138, 15011−15018 (2016); DOI: 10.1021/jacs.6b09110.
- Ternary Polymer Solar Cells based on Two Acceptors and One Donor for Achieving 12.2% Efficiency, W. Zhao et al., Adv. Mater., 29, 1604059 (2017); DOI: 10.1002/adma.201604059.
- All-Polymer Solar Cells Based on Absorption-Complementary Polymer Donor and Acceptor with High Power Conversion Efficiency of 8.27%, L. Gao et al., Adv. Mater., 28, 1884–1890 (2016); DOI: 10.1002/adma.201504629.
Author: Hunan Yi
Hunan is Ossila’s organic chemist, specialising in polymers and functional materials synthesis, polymeric semiconductors, and purification of conjugated polymers. Having achieved an MSc from Shanghai China, Hunan moved to St Andrews University to study towards his PhD in Dye-Sensitised Solar Cells where he then remained as Research Fellow until 2004. He then became a Postdoctoral Research Associate at the University of Sheffield, before working with both the University and Ossila as a KTA associate in 2015.