TY - JOUR T1 - Improving efficiency by balancing carrier transport in poly(9,9-dioctylfluorene) light-emitting diodes using tetraphenylporphyrin as a hole-trapping, emissive dopant JO - APPL PHYS LETT PY - 2001/12/03 AU - Campbell AJ AU - Bradley DDC AU - Virgili T AU - Lidzey DG AU - Antoniadis H ED - VL - 79 IS - 23 SP - 3872 EP - 3874 Y2 - 2024/12/22 ER -