MilliporeSigma
HomeOrganic ElectronicsPolymer Semiconductors in Display & Optoelectronics Research

Polymer Semiconductors in Display & Optoelectronics Research

Organic polymer semiconductors are key materials for research in organic electronics. Efforts to develop field-effect transistors (FETs), plastic solar cells, organic RFIDs, and electrochemical sensors all depend on availability of reliable organic semiconductors with choices of different molecular architectures and consistent quality. Sigma-Aldrich is pleased to offer these conjugated polymer semiconductors.

Electronic grade Poly(3-alkylthiophenes) – “benchmark” high-performance organic semiconductors

Poly(3-alkylthiophenes) are used as p-channel conductors in organic FETs,1 and p-type materials in heterojunction photovoltaic (PV) devices2 with highest performance achieved to-date. Semiconductor performance of these polymers can be degraded by residual catalyst impurities,3 defects in polymer chain regiospecificity,4,5 and low molecular weight of the polymers. Our electronic-grade poly(3-alkylthiophenes) are highest quality materials available in the research market, with consistently high purity, regioregularity, and molecular weight. The choice of the hexyl-, octyl-, and dodecyl- side-chains will allow you to explore effects of polymer architecture6 without worrying about differences in quality of the materials.

BBL – n-type conjugated polymer

Availability of n-type (electron-mobile) organic semiconductors is one of the main challenges to fabricating n-channel FETs and heterojunctions PVs. We are pleased to offer the ladder polymer poly(benzobisimidazobenzophenanthroline (BBL), one of the few conjugated polymers showing n-channel behavior. This material, processed from solutions in methanesulfonic acid, shows high electron mobility in polymer FETs.7 Organic solar cells with promising performance were fabricated from BBL with MEH-PPV 8 and poly(3-alkylthiophene)9 p-type polymers.

Materials
Loading

References

1.
Zaumseil J, Sirringhaus H. 2007. Electron and Ambipolar Transport in Organic Field-Effect Transistors. Chem. Rev.. 107(4):1296-1323. http://dx.doi.org/10.1021/cr0501543
2.
Li G, Shrotriya V, Huang J, Yao Y, Moriarty T, Emery K, Yang Y. 2005. High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends. Nature Mater. 4(11):864-868. http://dx.doi.org/10.1038/nmat1500
3.
Cugola R, Giovanella U, Di Gianvincenzo P, Bertini F, Catellani M, Luzzati S. 2006. Thermal characterization and annealing effects of polythiophene/fullerene photoactive layers for solar cells. Thin Solid Films. 511-512489-493. http://dx.doi.org/10.1016/j.tsf.2005.12.092
4.
Sirringhaus H, Brown PJ, Friend RH, Nielsen MM, Bechgaard K, Langeveld-Voss BMW, Spiering AJH, Janssen RAJ, Meijer EW, Herwig P, et al. 1999. Two-dimensional charge transport in self-organized, high-mobility conjugated polymers. Nature. 401(6754):685-688. http://dx.doi.org/10.1038/44359
5.
Kim Y, Cook S, Tuladhar SM, Choulis SA, Nelson J, Durrant JR, Bradley DDC, Giles M, McCulloch I, Ha C, et al. 2006. A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene:fullerene solar cells. Nature Mater. 5(3):197-203. http://dx.doi.org/10.1038/nmat1574
6.
Al-Ibrahim M, Roth H, Schroedner M, Konkin A, Zhokhavets U, Gobsch G, Scharff P, Sensfuss S. 2005. The influence of the optoelectronic properties of poly(3-alkylthiophenes) on the device parameters in flexible polymer solar cells. Organic Electronics. 6(2):65-77. http://dx.doi.org/10.1016/j.orgel.2005.02.004
7.
Babel A, Jenekhe SA. 2003. High Electron Mobility in Ladder Polymer Field-Effect Transistors. J. Am. Chem. Soc.. 125(45):13656-13657. http://dx.doi.org/10.1021/ja0371810
8.
Alam MM, Jenekhe SA. 2004. Efficient Solar Cells from Layered Nanostructures of Donor and Acceptor Conjugated Polymers. Chem. Mater.. 16(23):4647-4656. http://dx.doi.org/10.1021/cm0497069