Electronic and optical properties of two-dimensional heterostructures based on Janus XSSe (X = Mo, W) and Mg(OH)2: a first principles investigation Junbin Lou,a Kai Ren, *b Zhaoming Huang,*c Wenyi Huo, b Zhengyang Zhuc and Jin Yud Author affiliations * Corresponding authors a School of Information Science and Engineering, Jiaxing University, Jiaxing, Zhejiang, China b School of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing, Jiangsu, China E-mail:...