Effect ofshiftingofaromaticringsonchargecarriermobilityand photovoltaic responseofanthraceneandthiophene-containing MEH-PPE-PPVs

Gunes, Serap; Wild, Andreas; Cevik, Emel; Pivrikas, Almantas; Schubert, Ulrich S.; Egbe, Daniel A. M.

Abstract:

We have investigated the charge carrier mobility and photo voltaic response of two thiophene-[P1 (MEH-PPE1-PThV2) and P2 (MEH-PThE1-PPV2)] as well as two anthracene-containingpoly(phenylene- ethynylene)family of polymers[P3 (MEH-PPE1-PAnV2) and P4 (MEH-PAnE1-PPV2)], whereby the position of thiopheneoranthracene has been shifted from between two double bonds(P1 and P3) to the bridge between triple bond and double bond(P2 and P4). P2 shows better photo voltaic performance than P1, whereas similar photo voltaic characteristics were found for P3 and P4. The devices using the blends of P2 as donor and PCBM as acceptor(1:3weight ratio)exhibited a short- circuit current density of JSC=5.2mA/cm2, an open-circuit voltage of VOC=800mV,fill factorFF=0.44 and resulting power conversion efficiency ZAM 1.5=1.8%.

Year:

2010

Type of Publication:

Article

Keywords:

Polymer solar cells; Conjugated polymers; Organic solarcells

Journal:

Solar Energy Materials {&} Solar Cells

Volume:

94

Pages:

484 - 491