Publication

Molecular photovoltaics

Related publications (11)

Spatial and Morphological Control of Cyanine Dye Thin Films

Cyanine dyes are organic semiconductor compounds with light absorption and emission properties useful for emerging technologies such as solar cells and light-emitting devices. The characteristics of these materials in the solid state depend on their organi ...

EPFL2018

Submolecular Electroluminescence Mapping of Organic Semiconductors

Klaus Kern, Anna Maria Roslawska, Christoph Grosse

The electroluminescence of organic films is the central aspect in organic light emitting diodes (OLEDs) and widely used in current display technology. However, its spatial variation on the molecular scale is essentially unexplored. Here, we address this is ...

American Chemical Society2017

Transparent Electrodes for Efficient Optoelectronics

Christophe Ballif, Stefaan De Wolf, Monica Morales Masis, Rachel Emma Woods-Robinson

With the development of new generations of optoelectronic devices that combine high performance and novel functionalities (e.g., flexibility/bendability, adaptability, semi or full transparency), several classes of transparent electrodes have been develope ...

2017

Transparent Electrodes in Silicon Heterojunction Solar Cells: Influence on Contact Passivation

Christophe Ballif, Bertrand Yves Paul Paviet-Salomon, Florent Sahli, Stefaan De Wolf, Sylvain Nicolay, Björn Niesen, Loris Barraud, Johannes Peter Seif, Andrea Tomasi, Lorenzo Fanni, Silvia Martin de Nicolas Agut

Charge carrier collection in silicon heterojunction solar cells occurs via intrinsic/doped hydrogenated amorphous silicon layer stacks deposited on the crystalline silicon wafer surfaces. Usually, both the electron and hole collecting stacks are externally ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Explaining Morphological and Electrical Features of Boron-doped Zinc Oxide to Tailor New Electrodes for Photovoltaics

Lorenzo Fanni

TCOs are a class of metal oxides that combine transparency to visible light with electrical conductivity. Each TCO is characterized by the trade-off of these two properties which can be tuned for a particular application. This thesis is dedicated to the in ...

EPFL2016

PEDOT counter electrodes for dye-sensitized solar cells prepared by aqueous micellar electrodeposition

Nikolaos Vlachopoulos, Ulf Anders Hagfeldt

Electropolymn. of 3,4-ethylenedioxythiophene (EDOT) was performed in an aq. micellar soln. onto conducting glass and conducting flexible plastic substrates using a simple, scalable process. The background electrolyte in the process consisted merely of a mi ...

2013

Miniaturized concentrator arrays as compact angle transformers for light collection and distribution

Franz-Josef Haug, Roland Andreas Bitterli, Toralf Scharf

Efficient light management is one of the key issues in modern energy conversion systems might it be to collect optical power or to redistribute light generated by high power light emitting diodes. One problem maintains: the final size of the elements if hi ...

Spie-Int Soc Optical Engineering2013

Record Infrared Internal Quantum Efficiency in Silicon Heterojunction Solar Cells With Dielectric/Metal Rear Reflectors

Christophe Ballif, Antoine Descoeudres, Stefaan De Wolf

Inserting a dielectric between the absorber and rear metal electrode of a solar cell increases rear internal reflectance by both limiting the transmission cone and suppressing the plasmonic absorption of light arriving outside of the cone. We fabricate rea ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Optical and electronic properties of dye-sensitized heterojunction solar cells

Peter Chen

This research studies the optical and electronics properties of Solid-State Dye-Sensitized Solar cells (SSDSCs). The propagation of light inside dye anchored TiO2 mesoporous layer includes scattering and absorption of photons. The light absorption behavior ...

EPFL2009

Approches numériques du transport de charges dans les semiconducteurs organiques

Hocine Houili

Using plastics or dyes like molecular semiconductors to make optoelectronic devices at low cost is a project in industry that is of great interest to the "Information Community" of this beginning of the 21st century. Some applications of this technology ha ...

EPFL2006

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