Roland Hany

Publications associées (29)

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Cyanine dye polyelectrolytes for organic bilayer solar cells

Roland Hany, Lei Wang, Hui Zhang

Polyelectrolytes composed of an anionic sulfoethyl methacrylate/methacrylate backbone and cationic cyanine dyes counter ions are synthesized. The effective reaction sequence is confirmed by NMR spectroscopy and consists of a thermal radical copolymerizatio ...

Elsevier Sci Ltd2014

Influence of Molybdenum Oxide Interface Solvent Sensitivity on Charge Trapping in Bilayer Cyanine Solar Cells

Frank Nüesch, Roland Hany, Beat Ruhstaller

Bilayer organic solar cells based on trimethine cyanine donor and C-60 acceptor materials have been fabricated by coating the trimethine dye from solution on molybdenum oxide (MoO3) anode buffer layer. The choice of deposition solvent drastically influence ...

Amer Chemical Soc2014

Diyne-Functionalized Fullerene Self-Assembly for Thin Film Solid-State Polymerization

Roland Hany, Jakob Heier, Gaëtan Wicht, Raffaele Mezzenga

C-60 fullerene derivatives bearing aliphatic chains can self-assemble into versatile supramolecular structures. Cross-linking of such self-assembled morphologies is an attractive approach to enhance the structural stability of these self-organized structur ...

American Chemical Society2014

Growth and Alignment of Thin Film Organic Single Crystals from Dewetting Patterns

Gian-Luca Bona, Roland Hany, Jakob Heier, Gaëtan Wicht, Raffaele Mezzenga, Thomas Geiger

Studying and understanding the conditions under which organic semiconductors can be engineered to form aligned single crystals in thin films is of primary importance owing to their unique orientation-dependent optoelectronic properties. Efforts to reach th ...

Amer Chemical Soc2013

Influence of crystalline titanium oxide layer smoothness on the performance of inverted organic bilayer solar cells

Roland Hany, Gaëtan Wicht, Hui Zhang, Thomas Andreas Lanz

Due to the small exciton diffusion length in organic materials, the donor-acceptor heterointerface in simple bilayer solar cells must be placed in close proximity to the bottom electrode. This makes great demands on the planarity of the base layer, since a ...

Amer Inst Physics2013

Stability of bilayer trimethine cyanine dye/fullerene organic solar cells

Roland Hany, Lei Wang, Gaëtan Wicht, Hui Zhang

The long-term (up to 100 days) stabilities of thin films of a trimethine cyanine dye (Cy3-P) and of Cy3-P/C-60 bilayer solar cells with initial power conversion efficiencies of up to 3.6% in the regular and inverted device architecture were studied. For st ...

Elsevier Science Bv2013

Dewetting-driven hierarchical self-assembly of small semiconducting molecules

Gian-Luca Bona, Roland Hany, Jakob Heier, Raffaele Mezzenga

We describe the self-organization of PCBM and a cyanine dye on chemically patterned surfaces during spin coating from solution. On homogeneous surfaces, a transient bilayer forms, which in a later stage decomposes into PCBM droplets in a matrix of the cyan ...

2012

Enhanced cyanine solar cell performance upon oxygen doping (vol 9, pg 85, 2008)

Jacques-Edouard Moser, Bin Fan, Roland Hany, Bin Fan

Elsevier2009

Poly(3-hexylthiophene)/C-60 heterojunction solar cells: Implication of morphology on performance and ambipolar charge collection

Roland Hany, Jakob Heier, Alain Geiser, Bin Fan

The performance of heterojunction organic solar cells is critically dependent on the morphology of the donor and acceptor components in the active film. We report results of photovoltaic devices consisting of bilayers and bulk heterojunctions using poly(3- ...

2008

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Poly(3-hexylthiophene)/C-60 heterojunction solar cells: Implication of morphology on performance and ambipolar charge collection

Roland Hany, Jakob Heier, Alain Geiser, Bin Fan

2008