Near ultraviolet electroluminescence in hexagonal boron nitride-based van der Waals heterostructures Sang Hoon Chae, Dongjea Seo, Qingrui Cao, Xiang Hua, En-Min Shih, Sunho Park, Seungjun Lee, Takashi Taniguchi, Kenji Watanabe, Junyoung Kwon, Gwan-Hyoung Lee, Cory R. Dean, David Schiminovich, Irving P. Herman, Heon-jin Choi, Young-Kyun Kwon, Ioannis Kymissis, Young Duck Kim, James Hone, submitted for publication (2021).