Publications related to Quantum yield

Enhanced light harvesting in mesoporous TiO2/P3HT hybrid solar cells using a porphyrin dye

Michael Graetzel, Shaik Mohammed Zakeeruddin, Kevin Sivula, Soo-Jin Moon

We report panchromatic light harvesting in hybrid TiO2/P3HT photovoltaic devices using a porphyrin dye that complements the light absorption of P3HT. The high short circuit photocurrent (12.1 mA cm(-2)) obtained is found to be due, in part, to Forster reso ...

2011

Ultrafast Excited-State Dynamics of Rhenium(I) Photosensitizers [Re(Cl)(CO)(3)(N,N)] and [Re(imidazole)(CO)(3)(N,N)](+): Diimine Effects

Majed Chergui, Andrea Cannizzo, Amal El Nahhas, Cristina Consani

Femto- to picosecond excited-state dynamics of the complexes Re(L)(CO)(3)(N,N) (N,N = bpy, phen, 4,7-dimethyl-phen (dmp); L = Cl, n = 0; L = imidazole, n = 1+) were investigated using fluorescence up-conversion, transient absorption in the 650-285 nm ...

2011

Symmetries and the Polarized Optical Spectra of Exciton Complexes in Quantum Dots

Elyahou Kapon, Alok Rudra, Marc-André Dupertuis, Daniel Oberli

A systematic and simple theoretical approach is proposed to analyze true degeneracies and polarized decay patterns of exciton complexes in semiconductor quantum dots. The results provide reliable spectral signatures for efficient symmetry characterization, ...

2011

Energy and Hole Transfer between Dyes Attached to Titania in Cosensitized Dye-Sensitized Solar Cells

Shaik Mohammed Zakeeruddin, Jacques-Edouard Moser, Robin Humphry-Baker, Peng Wang, Thomas Moehl

Cosensitization of broadly absorbing ruthenium metal complex dyes with highly absorptive near-infrared (NIR) organic dyes is a clear pathway to increase near-infrared light harvesting in liquid- based dye-sensitized solar cells (DSCs). In cosensitized DSCs ...

2011

Relaxation Dynamics of Tryptophan in Water: A UV Fluorescence Up-Conversion and Molecular Dynamics Study

Majed Chergui, Frank van Mourik, Andrea Cannizzo, Ahmad Ajdar Zadeh Oskouei

We report on an ultrafast experimental and simulations study of the early relaxation events of photoexcited tryptophan in water. Experimentally, we used fluorescence up-conversion in both polychromatic and single wavelength detection modes in the 300-480 n ...

American Chemical Society2010

Ultrafast Excited-State Dynamics ef [Re(L)(CO)(3)(bpy)](n) Complexes: Involvement of the Solvent

Majed Chergui, Frank van Mourik, Andrea Cannizzo, Amal El Nahhas

Ultrafast excited-state dynamics of Re(L)(CO)(3)(bpy) (L = Cl, Br, n = 0; L = 4-ethyl-pyridine (Etpy), n = 1+; bpy = 2,2'-bipyridine) have been investigated in dimethylformamide (DMF) solution by fluorescence up-conversion (FIUC) and UV - vis transien ...

American Chemical Society2010

Tuning the Excited-State Dynamics of GFP-Inspired Imidazolone Derivatives

Natalie Renuka Banerji, Eric Vauthey

The excited-state dynamics of five derivatives of the GFP-chromophore, which differ by the position and nature of their substituents, has been investigated in solvents of various viscosity and polarity and in rigid media using femtosecond-resolved spectros ...

2010

Fluorescent nanopigments: Quantitative assessment of their quantum yield

Libero Zuppiroli, Rolando Ferrini

In the last few years, an intense research effort has focused on the synthesis of fluorescent nanopigments for functional inks, light harvesting, tagging, tracing, (bio)labeling, imaging, and lighting applications. Moreover, combined with dielectric matric ...

American Institute of Physics2010

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Quantum yield

Enhanced light harvesting in mesoporous TiO2/P3HT hybrid solar cells using a porphyrin dye

Binding of Biotin to Streptavidin: A combined fluorescence correlation spectroscopy and time-resolved fluorescence study

Ultrafast Excited-State Dynamics of Rhenium(I) Photosensitizers [Re(Cl)(CO)(3)(N,N)] and [Re(imidazole)(CO)(3)(N,N)](+): Diimine Effects

Symmetries and the Polarized Optical Spectra of Exciton Complexes in Quantum Dots

Energy and Hole Transfer between Dyes Attached to Titania in Cosensitized Dye-Sensitized Solar Cells

Relaxation Dynamics of Tryptophan in Water: A UV Fluorescence Up-Conversion and Molecular Dynamics Study

Time-Resolved Optical and X-Ray Spectroscopy of Rhenium Based Molecular Complexes

Ultrafast Excited-State Dynamics ef [Re(L)(CO)(3)(bpy)](n) Complexes: Involvement of the Solvent

Tuning the Excited-State Dynamics of GFP-Inspired Imidazolone Derivatives

Fluorescent nanopigments: Quantitative assessment of their quantum yield

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Enhanced light harvesting in mesoporous TiO2/P3HT hybrid solar cells using a porphyrin dye

Tuning the Excited-State Dynamics of GFP-Inspired Imidazolone Derivatives

Fluorescent nanopigments: Quantitative assessment of their quantum yield

Binding of Biotin to Streptavidin: A combined fluorescence correlation spectroscopy and time-resolved fluorescence study

Ultrafast Excited-State Dynamics of Rhenium(I) Photosensitizers [Re(Cl)(CO)(3)(N,N)] and [Re(imidazole)(CO)(3)(N,N)](+): Diimine Effects

Symmetries and the Polarized Optical Spectra of Exciton Complexes in Quantum Dots

Ultrafast Excited-State Dynamics ef [Re(L)(CO)(3)(bpy)](n) Complexes: Involvement of the Solvent

Relaxation Dynamics of Tryptophan in Water: A UV Fluorescence Up-Conversion and Molecular Dynamics Study

Time-Resolved Optical and X-Ray Spectroscopy of Rhenium Based Molecular Complexes