Electroluminescence little

It was observed in other works that in sulfide electrolyte, decomposition of ZnSe was still obtained stable PECs could be constructed though from singlecrystal, n-type, Al-doped ZnSe electrodes and aqueous diselenide or ditelluride electrolytes [124]. Long-term experiments in these electrolytes were accompanied by little electrode weight loss, while relatively constant photocurrents and lack of surface damage were obtained, as well as competitive electrolyte oxidation. Photoluminescence and electroluminescence from the n-ZnSe Al electrodes were investigated. 

Despite the extensive application of ruthenium complexes in DSSC, transition metal containing polymers have received relatively little attention in the fabrication of polymeric photovoltaic cells. Most of the early works on ruthenium containing polymers were focused on the light-emitting properties.58-60 Several examples of ruthenium terpyridine/bipyridine containing conjugated polymers and their photoconducting/electroluminescent properties were reported.61,62... 

The choice to focus on the eloctroluminescence of oligomeric thiophene materials is due to the fact that there has been little progress in polythiophenes as electroluminescent materials from earlier studies (Braun et al., 1992 Berggren et al., 1994 Barta et al., 1998) to more recent investigations (Charas et al., 2001 Pasini et al., 2003 Cheylan et al., 2007 Melucci et al., 2007). 

The zone of recombination can be made very small, as was shown by Ami-naka et al., by doping only a thin layer (5 nm) in the device by a red emission material [47]. By observing the ratio of host and dopant emission, the authors were able to show that the recombination zone of the device was as thin as 10 nm. The emitted light is usually coupled out at the substrate side through the transparent anode. Generally, the electroluminescence spectrum differs little from the photoluminescence spectrum. 

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