Tilted bulk heterojunction organic photovoltaic cells grown by oblique angle deposition

Ning Li and Stephen R. Forrest

Obliquely deposited donor chloroaluminum phthalocyanine (ClAlPc) films on indium tin oxide have surface feature sizes of ~30  nm, resulting in ClAlPc/C₆₀ donor-acceptor heterojunctions (HJs) with approximately twice the interface area of HJs grown at normal incidence. This results in nearly twice the external quantum efficiency in the ClAlPc absorption band compared with analogous, planar HJs.

Appl. Phys. Lett. 95, 123309 (2009)

Three-dimensional fabrication of optically active microstructures containing an electroluminescent polymer

C. R. Mendonca, D. S. Correa, F. Marlow, T. Voss, P. Tayalia, and E. Mazur

In this paper, we use two-photon absorption polymerization to fabricate optically active microstructures containing the conductive and luminescent polymer poly(2-methoxy-5-(2 -ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV). The microstructures retain the emission characteristics of MEH-PPV and allow waveguiding of locally excited fluorescence when fabricated on top of low refractive index substrates.