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Publications associées (28)

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Extreme light absorption in a necking-free monolayer of resonant-size nanoparticles for photoelectrochemical cells

Ali Dabirian

Semiconductor photoelectrodes for water oxidation that absorb visible light usually have poor electronic transport properties and small optical absorption coefficients near their absorption edge. Therefore, innovative designs that lead to significant optic ...

Iop Publishing Ltd2014

Panchromatic light harvesting by dye- and quantum dot-sensitized solar cells

Michael Graetzel, Robin Humphry-Baker, Jun Ho Yum

A PbS:Hg quantum dots-sensitized solar cell (QDSC) combined with a dye-sensitized solar cell (DSC) to harvest panchromatic solar spectrum from the visible light to the near IR is demonstrated. We use the filter to split the solar energy and access the tota ...

Pergamon-Elsevier Science Ltd2014

Silicon protected with atomic layer deposited TiO2: durability studies of photocathodic H-2 evolution

Michael Graetzel

The semiconducting materials used for photoelectrochemical (PEC) water splitting must withstand the corrosive nature of the aqueous electrolyte over long time scales in order to be a viable option for large scale solar energy conversion. Here we demonstrat ...

Royal Soc Chemistry2013

Sequential deposition as a route to high-performance perovskite-sensitized solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Robin Humphry-Baker, Peng Gao, Peng Gao, Soo-Jin Moon, Norman Pellet, Julian Burschka

Following pioneering work(1), solution-processable organic-inorganic hybrid perovskites-such as CH3NH3PbX3 (X = Cl, Br, I)-have attracted attention as light-harvesting materials for mesoscopic solar cells(2-15). So far, the perovskite pigment has been depo ...

Nature Publishing Group2013

An analysis of the optimal band gaps of light absorbers in integrated tandem photoelectrochemical water-splitting systems

Sophia Haussener

The solar-to-hydrogen (STH) efficiency limits, along with the maximum efficiency values and the corresponding optimal band gap combinations, have been evaluated for various combinations of light absorbers arranged in a tandem configuration in realistic, op ...

Royal Society of Chemistry2013

Identifying champion nanostructures for solar water-splitting

Michael Graetzel, Francesco Stellacci, Cécile Hébert, Kislon Voitchovsky, Maurin Cornuz

Charge transport in nanoparticle-based materials underlies many emerging energy-conversion technologies, yet assessing the impact of nanometre-scale structure on charge transport across micrometre-scale distances remains a challenge. Here we develop an app ...

Nature Publishing Group2013

Tridentate cobalt complexes as alternative redox couples for high-efficiency dye-sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Thomas Moehl

Cobalt terpyridine complexes could rival the classical triiodide/iodide redox couple as efficient alternative redox couples for dye-sensitized solar cells. Cobalt bis(2,2',6',2 ''-terpyridine) complexes enable systematic tuning of the redox potential by va ...

Royal Soc Chemistry2013

Towards high-performance DPP-based sensitizers for DSC applications

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum, Kasparas Rakstys, Thomas Wesley Holcombe

A novel, asymmetric DPP bridge/core was synthesized and tested in DSC devices. By desymmetrising the DPP core/bridge, a remarkable IPCE of >80% and a maximum power conversion efficiency of 7.7% were achieved. With the use of a wide-bandgap co-sensitizer, 8 ...

Royal Society of Chemistry2012