H.F. Wittmann

An improved experimental determination of external photoluminescence quantum efficiency

John C. de Mello, H.F. Wittmann, Richard H. Friend · Advanced Materials · 1997 · 2K citations

Engineering, Improved Experimental Determination, Optoelectronic Devices +18

Spatial extent of the singlet and triplet excitons in transition metal-containing poly-ynes

David Beljonne, H.F. Wittmann, Anna Köhler et al. · The Journal of Chemical Physics · 1996 · 174 citations

Localized Excited State, Engineering, Spatial Extent +17

Operating stability of light-emitting polymer diodes based on poly(p-phenylene vinylene)

J. C. Carter, Ilaria Grizzi, S. K. Heeks et al. · Applied Physics Letters · 1997 · 135 citations

Engineering, Organic Electronics, Optoelectronic Devices +19

Optical spectroscopy of platinum and palladium containing poly-ynes

H.F. Wittmann, Richard H. Friend, Muhammad S. Khan et al. · The Journal of Chemical Physics · 1994 · 123 citations

Optical Materials, Engineering, Palladium Polymer +19

Microcavity effect in a single‐layer polymer light‐emitting diode

H.F. Wittmann, Johannes Grüner, Richard H. Friend et al. · Advanced Materials · 1995 · 110 citations

Optical Materials, Engineering, Organic Electronics +23