Dual-band light-emitting diode based on microwheel cavityGangyi Zhu, Mengyao Zhou, Siqing He, Feifei Qin, Boning Han, Yan Jiang, Xin Li, Haibo Zeng and Yongjin WangEPL, 128 5 (2019) 58002DOI: https://doi.org/10.1209/0295-5075/128/58002