0

Enhancing the Thermal Stability of Polythiophene:fullerene Solar Cells by Decreasing Effective Polymer Regioregularity

Kevin Sivula, Christine K Luscombe, Barry C Thompson, Jean M J Fréchet

J Am Chem Soc. 2006 Nov 1;128(43):13988-9.

PMID: 17061856

Abstract:

Regioregularity has been shown to be an important aspect for the properties of poly(3-hexylthiophene) both in the pristine material and in bulk heterojunction photovoltaics with the fullerene derivative PCBM. Here we present a straightforward method to adjust the effective regioregularity of poly(3-hexylthiophene) by introducing 3,4-dihexylthiophene into the polymer chain. By investigating bulk heterojunction morphology and photovoltaic performance upon annealing, we observe that polythiophene with 91% regioregularity maintains equivalent electronic properties but forms a more thermally stable interpenetrating network with PCBM than polythiophene with regioregularity >96%.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP122107044 3,4-Dihexylthiophene 3,4-Dihexylthiophene 122107-04-4 Price
qrcode