Afterglow OLEDs incorporating bright closely stacked molecular dimers with ultra-long thermally activated delayed fluorescence

Weidong Qiu, Denghui Liu, Zijian Chen, Yiyang Gan, Shu Xiao, Xiaomei Peng, Difei Zhang, Xinyi Cai, Mengke Li, Wentao Xie, Guanwei Sun, Yihang Jiao, Qing Gu, Dongge Ma, Shi‐Jian Su