Chu, L., Ahmad, W., Liu, W., Yang, J., Zhang, R., Sun, Y., Yang, J. and Li, X. (2019) “Lead-Free Halide Double Perovskite Materials: A New Superstar Toward Green and Stable Optoelectronic Applications”, Nano-Micro Letters, 11, p. 16. doi: 10.1007/s40820-019-0244-6.