Photovoltaic effects of rare earth organic electroluminescent devices(OELD), ITO/TPD/Gd(DBM) 3 bath, were described. Double OEL devices with Gd complex indicated considerable photovoltaic properties. About 20 μA·cm -2 of maximum short current ( I sc ) and 2 2 V of maximum voltage ( V oc ) of the photovolotaic cell with the rare earth complex under illumination UV lamp with 365 nm were achieved. Although the most sensitive response of it is at UV region, V oc larger than 1 5 V under solar illumination can also be observed. Under UV light illumination of 367 nm, V oc =844 mV, I sc =2 1 μA·cm -2 and 4% of energy transfer efficiency were measured.
Organic film photovoltaic (PV) cell, ITO/NPB/Y(ACA) 3phen/Mg∶Ag, was fabricated. The NPB, N,N′ bis (1 naphthyl) N,N′ diphenyl 1,1′ biphenyl 4,4′ diamine, and Y(ACA) 3phen, (tris (acetylacetonato) (mono phenothroline) yttrium, are the electron acceptor and donor in the PV cell, respectively. Under UV light with 4 mW·cm -2 , the cell show short circuit current of 46 μA·cm -2 , open circuit voltage of 2.18 V, fill factor of 0.30, and the overall power conversion efficiency of 0.7%, respectively. The responding region is matched to the adsorption of NPB film. It is found that the PV cell indicates electroluminescent (EL) performances and could emit blue light at dc voltage. The maximum luminance is about 750 cd·m -2 at 15 V.
