Gong Q, Chen Z, Xiao L, Zheng Y, Lu J. Photosensitizer-doped Organic Light-emitting Diodes for Near Infrared to Visible Optical Upconversion, in 2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9.; 2008:2259-2260.