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Publications associées (30)

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Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Michael Graetzel, Mohammad Ibrahim Dar, Mojtaba Abdi Jalebi

Here, we demonstrate the incorporation of monovalent cation additives into CH3NH3PbI3 perovskite in order to adjust the optical, excitonic, and electrical properties. The possibility of doping was investigated by adding monovalent cation halides with simil ...

Journal Of Visualized Experiments2017

A cockspur for the DSS cells: Erythrina crista-galli sensitizers

Michael Graetzel, Jean-David Décoppet

Dye sensitized solar cells were assembled employing a mixture of anthocyanins extracted from red ceibo's flowers. At the literature different extraction procedures are reported to extract anthocyanins from natural products and sensitize the cells. In order ...

Elsevier2017

Unreacted PbI2 as a Double-Edged Sword for Enhancing the Performance of Perovskite Solar Cells

Ulf Anders Hagfeldt, Jacques-Edouard Moser, Kurt Schenk, Wolfgang Richard Tress, Joël Teuscher, Juan-Pablo Correa-Baena, Marine Eva Fedora Bouduban, Tor Jesper Jacobsson

Lead halide perovskites have over the past few years attracted considerable interest as photo absorbers in PV applications with record efficiencies now reaching 22%. It has recently been found that not only the composition but also the precise stoichiometr ...

American Chemical Society2016

Mesoporous SnO2 electron selective contact enables UV-stable perovskite solar cells

Michael Graetzel, Ulf Anders Hagfeldt, Antonio Abate, Juan-Pablo Correa-Baena

Perovskite solar cells are a promising new technology for large scale energy applications. The current major challenge for commercialization is increasing the device lifetime under real working conditions. State-of-the-art perovskite solar cells are prepar ...

Elsevier Science Bv2016

Thermo-Economic Analysis of a Trigeneration HCPVT Power Plant

François Maréchal, Anna Sophia Wallerand

The increasing need for electricity and heat in a growing global economy must be combined with CO2 emissions reduction, in order to limit the human influence on the environment. This calls for energy-efficient and cost- competitive renewable energy systems ...

2015

Dye-sensitized solar cells : detailed studies focused on the molecular engineering of D-π-A dyes and the optimization of the application of ionic-liquid-based electrolytes

Magdalena Anna Marszalek

EPFL2013

Anthocyanins and betalains as light-harvesting pigments for dye-sensitized solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum

We present the photoelectrochemical properties of dye-sensitized solar cells using natural pigments containing betalains and anthocyanins as sensitizers. The dyes extracted from grape, mulberry, blackberry, red Sicilian orange, Sicilian prickly pear, eggpl ...

2012

Compensation mechanism in silicon-doped gallium arsenide nanowires

Anna Fontcuberta i Morral, Emanuele Uccelli, Bernt Ketterer

P-type gallium arsenide nanowires were grown with different silicon doping concentrations. The incorporation is monitored by Raman spectroscopy of the local vibrational modes. For Si-concentrations up to 1.4 x 10(18) cm(-3), silicon incorporates mainly in ...

American Institute of Physics2010

Asymmetric intermediate reflector for tandem micromorph thin film silicon solar cells

Christophe Ballif, Franz-Josef Haug, Xavier Niquille, Vanessa Terrazzoni-Daudrix

The micromorph solar cell (stack of amorphous and microcrystalline cells) concept is the key for achieving high efficiency stabilized thin film silicon solar cells. We introduce a device structure that allows a better control of the light in-coupling into ...

AIP American Institute of Physics2009

CdSe quantum dot-sensitized solar cells exceeding efficiency 1% at full-sun intensity

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Jun Ho Yum, Peter Chen

Colloidal cadmium selenide (CdSe) quantum dots QDs) have been prepared and exploited as inorganic dyes to sensitize a large-band-gap TiO2 layer for QD-sensitized solar cells. The optimized QD-sensitized solar cells exhibited an unprecedented incident photo ...

2008