Polymer photovoltaic cells (PVCs) were fabricated and characterized using a blend of MEH-PPV and C-60-substituted conjugated polymers. In the C-60-containing polymers, C-60 is attached to the conjugated polymer main chain via alkyoxyl or alkyl side chain. The action spectrum indicates that both polymers contribute to the light absorption in the PVCs. The polymer PVCs show a fill factor of 27%, and white-light energy conversion efficiency of 0.01 % under the irradiation of 88 mW/cm(2), with collection efficiency of 2% at around 470 nm. (C) 2004 Elsevier B.V. All rights reserved.