Halide vapor phase epitaxy of monolayer molybdenum diselenide single crystals Taotao Li, Yang Yang, Liqi Zhou, Wenjie Sun, Weiyi Lin, Lei Liu, Xilu Zou, Si Gao, Yuefeng Nie, Yi Shi and Xinran Wang Natl Sci Open, 2 4 (2023) 20220055 Published online: 12 April 2023 DOI: 10.1360/nso/20220055