Zhang Zhi-Yuan, Xiao Zi-Han, Zhu Shan, Zhang Qi, Xia Rui-Dong, Peng Jun-Biao. Optical gain properties of interfacial material PFN-Br and its application potentials in future electrically pumped organic lasersJ. Acta Physica Sinica, 2023, 72(21): 214204. DOI: 10.7498/aps.72.20230773