Light-emitting poly(3-buthylthiophene) (P3BT) nanofibers were fabricated via an electrospinning method. Ten weight percent poly(ethylene oxide) (PEO) was included in a P3BT spinning solution to maintain the required viscosity for electrospinning. The formation of P3BT nanofibers was confirmed through high-resolution confocal photoluminescence imaging and spectroscopy and micro-Raman measurements performed on single strands of P3BT nanofibers. Our results show that P3BT nanofibers can be fabricated using the electrospinning method that can produce abundant continuous nanofibers. (C) 2011 Elsevier B.V. All rights reserved.