TY - JOUR AU - Engmann, Sebastian AU - Barito, Adam AU - Bittle, Emily AU - Giebink, Chris AU - Richter, Lee AU - Gundlach, David C2 - Nature Communications DA - 2019-01-16 00:01:00 LA - en PB - Nature Communications PY - 2019 TI - Higher Order Effects in Organic LEDs with Sub-bandgap Turn-on ER -