Annual energy yield of the fluorescent solar concentrator

Fluorescent solar concentrators are but one candidate for lowering the costs of photovoltaic technology. Stateof-the-art device conversion efficiencies are around 4%, and the device configuration can be optimized in terms of Euro per Watt. This paper aims to estimate the annual energy yield of such an optimized device configuration, using a...

Reduction of escape cone losses in luminescent solar concentrators with cholesteric mirrors

The Luminescent Solar Concentrator (LSC) consists of a transparent polymer plate, containing luminescent particles. Solar cells are connected to one or more sides of the polymer plate. Part of the light emitted by the luminescent particles is guided towards the solar cells by total internal reflection. About 25% of the dye emission is typically...

Fabrication and characterisation of polymer based solar cells

n.a.

Luminescent Solar Concentrators - A review of recent results

Luminescent solar concentrators (LSCs) generally consist of transparent polymer sheets doped with luminescent species. Incident sunlight is absorbed by the luminescent species and emitted with high quantum efficiency, such that emitted light is trapped in the sheet and travels to the edges where it can be collected by solar cells. LSCs offer...

Combined optical and electrical modeling of polymer: fullerene bulk heterojunction solar cells

Optical interference effects are important for the total absorption as well as the profile of the exciton generation rate in polymer:fullerene bulk heterojunction solar cells. For solar cells with an active layer of poly [2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylenevinylene] as electron donor and [6,6]-phenyl C61 butyric acid methyl ester...

A luminescent solar concentrator with 7.1% power conversion efficiency

n.a.

Optical modeling as optimization tool for single and double junction polymer solar cells

We have used optical modeling to calculate whether optical absorption and corresponding current densities in solar cells consisting of PF10TBT:PCBM (1:4) can be enhanced, either in single junctions by applying optical spacers or by going to a tandem structure. The current densities are calculated from the optical absorption using experimentally...

The luminescent concentrator: stability issues

n.v.t.

Optical modelling: a powerful tool in the analysis of highly efficient polymer solar cells

n.v.t.

Improving Polymer based Photovoltaic Devices by Reducing the Voltage Loss at the Donor-Acceptor Interface

This paper discusses the characterization and optimization of organic solar cells based on a bulk heterojunction consisting of an alternating copolymer, containing a fluorene and a benzathiadiazole unit with two neighboring thiophene rings, and a fullerene derivative (PCBM). The resulting power conversion efficiency amounts 3.9?İ.2 % (AM1.5, 100...

Determining the internal quantum efficiency of highly efficient polymer solar cells through optical modeling

A power conversion efficiency of 4.2% (AM1.5, 1000 W/M2) is measured for an organic solar cell based on an active layer of an alternating copolymer, containing a fluorence and a benzothadiazole unit with two neighboring thiophene rings, and a fullerene derivative. Using optical modeling, the absorption profile in the active layer of the solar...

Femtosecond spectroscopic studies of photoinduced electron transfer in MDMO-PPV:ZnO hybrid bulk heterojunctions

The photophysics of charge carriers (polaron) in MDMOPPV:ZnO hybrid bulk heterojunction is studied at 80K by femtosecond transient absorption spectroscopy. A short-lived positive polaron is observed in the blend phase in MDMOPPV:ZnO blend films with a weight ratio of 1:1 and 1:2. Further increase of ZnO weight ratio results in a significant...