Electrically tunable excitonic light-emitting diodes based on monolayer WSe2 p-n junctions,

J. Ross, P. Klement, A. Jones, N. Ghimire, J. Yan, D. Mandrus, T. Taniguchi, K. Watanabe, K. Kitamura, Wang Yao, D. Cobden, X. Xu

Nature Nanotechnology 9, 268 (2014). — (Link )