2D Materials
Graphene provided the excitement and impact to explore isolated 2D atomic layers that go beyond graphene and have a rich variety of composition, electronic structures and properties. There is opportunity to engineer the band gaps in these 2D atomic layers to span the entire range of materials from metals to semiconductors to insulators. We are pursuing strategies to synthesize, characterize and find applications for several of the 2D materials that complement graphene in properties. Hexagonal boron nitride, boron-carbon-nitrogen systems, metal di chalcogenides etc. fall into this category. Atomic layers of these materials and the possibility of creating unique hybrids of these materials are being explored with several applications in mind.
Publications
Other Publications
F. Liu, S. Zheng, X. He, A. Chaturvedi, J. He, W. L. Chow, T. R. Mion, X. Wang, J. Zhou, Q. Fu, H. J. Fan, B. K. Tay, L. Song, R.-H. He, C. Kloc, P. M. Ajayan, Z. Liu, “Highly Sensitive Detection of Polarized Light Using Anisotropic 2D ReS2,” Adv Funct Mater 26 (8): 1169-1177 (2016).
D. Sarkar, X. Xie, W. Liu, W. Cao, J. Kang, Y. Gong, S. Kraemer, P.M. Ajayan, K. Banerjee, “A subthermionic tunnel field-effect transistor with an atomically thin channel”, Nature 526: 91-95 (2015).
K. Keyshar, Y. Gong, G. Ye, G. Brunetto, W. Zhou, D.P. Cole, K. Hackenberg, Y. He, L. Machado, M. Kabbani, A.H.C. Hart, B. Li, D.S. Galvao, A. George, R. Vajtai, C.S. Tiwary, P.M. Ajayan, “Chemical Vapor Deposition of Monolayer Rhenium Disulfide (ReS2)”, Advanced Materials 27(31): 4640-4648 (2015).
J. Shen, Y. He, J. Wu, C. Gao, K. Keyshar, X. Zhang, Y. Yang, M. Ye, R. Vajtai, J. Lou, P.M. Ajayan, “Liquid Phase Exfoliation of Two-Dimensional Materials by Directly Probing and Matching Surface Tension Components”, Nano Letters 15(8): 5449-5454 (2015).
S. Lei, F. Wen, B. Li, Q. Wang, Y. Huang, Y. Gong, Y. He, P. Dong, J. Bellah, A. George, L. Ge, J. Lou, N. J. Halas, R. Vajtai, P. M. Ajayan, Optoelectronic Memory Using Two-Dimensional Materials. Nano Letters 15(1): 1530-6984 (2015).
Y. Gong, J. Lin, X. Wang, G. Shi, S. Lei, Z. Lin, X. Zou, G. Ye, R. Vajtai, B. I. Yakobson, H. Terrones, M. Terrones, B. K. Tay, J. Lou, S. T. Pantelides, Z. Liu, W. Zhou, P. M. Ajayan, Vertical and in-plane heterostructures from WS2/MoS2 monolayers. Nature materials 13.12 (2014): 1135-1142.
S. B. Yang, Y. J. Gong, J. S. Zhang, L. Zhan, L. L. Ma, Z. Y. Fang, R. Vajtai, X. C. Wang, and P. M. Ajayan, “Exfoliated Graphitic Carbon Nitride Nanosheets as Efficient Catalysts for Hydrogen Evolution under Visible Light”, Advanced Materials, 25(17), 2452-2456 (2013).
S. Lei , L. Ge , Z. Liu , S. Najmaei, G. Shi , G. You, J. Lou, R. Vajtai, P. M. Ajayan, Synthesis and photoresponse of large GaSe atomic layers. Nano letters 13.6 (2013): 2777-2781.
Y. Gong, Z. Liu, A. R. Lupini, G. Shi, J. Lin, S. Najmaei, Z. Lin, A. L. Elías, A. Berkdemir, G. You, H. Terrones, M. Terrones, R. Vajtai, S. T. Pantelides, S. J. Pennycook, J. Lou, W. Zhou, P. M. Ajayan, Band gap engineering and layer-by-layer mapping of selenium-doped molybdenum disulfide.” Nano letters 14.2 (2013): 442-449.
Y. Liu, L. Ma, G. Shi, W. Zhou, Y. Gong, S. Lei, X. Yang, J. Zhang, J. Yu, K. P. Hackenberg, A. Babakhani, J. C. Idrobo, R. Vajtai, J. Lou, P. M. Ajayan, In-plane heterostructures of graphene and hexagonal boron nitride with controlled domain sizes.” Nature nanotechnology 8.2 (2013): 119-124.