Emerging Photoluminescence in Monolayer MoS2
Nano Letters2010Vol. 10(4), pp. 1271–1275
Citations Over TimeTop 1% of 2010 papers
Andrea Splendiani, L. Sun, Yuanbo Zhang, Tianshu Li, Jonghwan Kim, Chi Yung Chim, Giulia Galli, Feng Wang
Abstract
Novel physical phenomena can emerge in low-dimensional nanomaterials. Bulk MoS(2), a prototypical metal dichalcogenide, is an indirect bandgap semiconductor with negligible photoluminescence. When the MoS(2) crystal is thinned to monolayer, however, a strong photoluminescence emerges, indicating an indirect to direct bandgap transition in this d-electron system. This observation shows that quantum confinement in layered d-electron materials like MoS(2) provides new opportunities for engineering the electronic structure of matter at the nanoscale.
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