Zhang Xiao-Bo, Cao Jin, Wei Fu-Xiang, Jiang Xue-Yin, Zhang Zhi-Lin, Zhu Wen-Qing, Xu Shao-Hong. High efficiency organic red electrophosphorescence devices with changing thickness of the emitting layerJ. Acta Physica Sinica, 2006, 55(1): 119-124. DOI: 10.7498/aps.55.119