Sefaattin Tongay

Asst Professor

  • 11363 Citations
  • 48 h-Index
20042022

Research output per year

If you made any changes in Pure these will be visible here soon.

Research Output

Filter
Article
2020

Achieving Morphological Control over Lamellar Manganese Metal-Organic Framework through Modulated Bi-Phase Growth

Shen, Y., Shan, B., Mu, B. & Tongay, S., Jan 1 2020, (Accepted/In press) In : Angewandte Chemie - International Edition.

Research output: Contribution to journalArticle

Giant Valley-Zeeman Splitting from Spin-Singlet and Spin-Triplet Interlayer Excitons in WSe2/MoSe2 Heterostructure

Wang, T., Miao, S., Li, Z., Meng, Y., Lu, Z., Lian, Z., Blei, M., Taniguchi, T., Watanabe, K., Tongay, S., Smirnov, D. & Shi, S. F., Jan 1 2020, (Accepted/In press) In : Nano Letters.

Research output: Contribution to journalArticle

1 Scopus citations

Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices

Regan, E. C., Wang, D., Jin, C., Bakti Utama, M. I., Gao, B., Wei, X., Zhao, S., Zhao, W., Zhang, Z., Yumigeta, K., Blei, M., Carlström, J. D., Watanabe, K., Taniguchi, T., Tongay, S., Crommie, M., Zettl, A. & Wang, F., Mar 19 2020, In : Nature. 579, 7799, p. 359-363 5 p.

Research output: Contribution to journalArticle

Phase Transition across Anisotropic NbS3 and Direct Gap Semiconductor TiS3 at Nominal Titanium Alloying Limit

Wu, K., Blei, M., Chen, B., Liu, L., Cai, H., Brayfield, C., Wright, D., Zhuang, H. & Tongay, S., Apr 1 2020, In : Advanced Materials. 32, 17, 2000018.

Research output: Contribution to journalArticle

Ultrathin WS2-on-Glass Photonic Crystal for Self-Resonant Exciton-Polaritonics

Zhang, X., Zhang, X., Huang, W., Wu, K., Zhao, M., Charlie Johnson, A. T., Tongay, S. & Cubukcu, E., Apr 1 2020, In : Advanced Optical Materials. 8, 7, 1901988.

Research output: Contribution to journalArticle

Unusual Pressure-Driven Phase Transformation and Band Renormalization in 2D vdW Hybrid Lead Halide Perovskites

Li, H., Qin, Y., Shan, B., Shen, Y., Ersan, F., Soignard, E., Ataca, C. & Tongay, S., Mar 1 2020, In : Advanced Materials. 32, 12, 1907364.

Research output: Contribution to journalArticle

2019

A dielectric-defined lateral heterojunction in a monolayer semiconductor

Utama, M. I. B., Kleemann, H., Zhao, W., Ong, C. S., da Jornada, F. H., Qiu, D. Y., Cai, H., Li, H., Kou, R., Zhao, S., Wang, S., Watanabe, K., Taniguchi, T., Tongay, S., Zettl, A., Louie, S. G. & Wang, F., Feb 1 2019, In : Nature Electronics. 2, 2, p. 60-65 6 p.

Research output: Contribution to journalArticle

12 Scopus citations

Anomalous phase transition behavior in hydrothermal grown layered tellurene

Li, H., Wu, K., Yang, S., Boland, T., Chen, B., Singh, A. K. & Tongay, S., Nov 14 2019, In : Nanoscale. 11, 42, p. 20245-20251 7 p.

Research output: Contribution to journalArticle

Chemical and physical changes of microplastics during sterilization by chlorination

Kelkar, V. P., Rolsky, C. B., Pant, A., Green, M., Tongay, S. & Halden, R., Oct 15 2019, In : Water Research. 114871.

Research output: Contribution to journalArticle

4 Scopus citations

Direct Observation of Gate-Tunable Dark Trions in Monolayer WSe2

Li, Z., Wang, T., Lu, Z., Khatoniar, M., Lian, Z., Meng, Y., Blei, M., Taniguchi, T., Watanabe, K., McGill, S. A., Tongay, S., Menon, V. M., Smirnov, D. & Shi, S. F., Oct 9 2019, In : Nano Letters. 19, 10, p. 6886-6893 8 p.

Research output: Contribution to journalArticle

1 Scopus citations

Electro-Optic Modulation in Hybrid Metal Halide Perovskites

Gao, Y., Walters, G., Qin, Y., Chen, B., Min, Y., Seifitokaldani, A., Sun, B., Todorovic, P., Saidaminov, M. I., Lough, A., Tongay, S., Hoogland, S. & Sargent, E. H., Apr 19 2019, In : Advanced Materials. 31, 16, 1808336.

Research output: Contribution to journalArticle

2 Scopus citations

Emerging photoluminescence from the dark-exciton phonon replica in monolayer WSe2

Li, Z., Wang, T., Jin, C., Lu, Z., Lian, Z., Meng, Y., Blei, M., Gao, S., Taniguchi, T., Watanabe, K., Ren, T., Tongay, S., Yang, L., Smirnov, D., Cao, T. & Shi, S. F., Dec 1 2019, In : Nature communications. 10, 1, 2469.

Research output: Contribution to journalArticle

Open Access
11 Scopus citations

Highly Polarized Photoelectrical Response in vdW ZrS3 Nanoribbons

Wang, X., Wu, K., Blei, M., Wang, Y., Pan, L., Zhao, K., Shan, C., Lei, M., Cui, Y., Chen, B., Wright, D., Hu, W., Tongay, S. & Wei, Z., Jan 1 2019, In : Advanced Electronic Materials. 1900419.

Research output: Contribution to journalArticle

3 Scopus citations

Highly Sensitive Polarization Photodetection Using a Pseudo-One-Dimensional Nb(1- x)TixS3 Alloy

Yang, S., Wu, M., Shen, W., Huang, L., Tongay, S., Wu, K., Wei, B., Qin, Y., Wang, Z., Jiang, C. & Hu, C., Jan 23 2019, In : ACS Applied Materials and Interfaces. 11, 3, p. 3342-3350 9 p.

Research output: Contribution to journalArticle

9 Scopus citations

Integration of atomically thin layers of transition metal dichalcogenides into high-Q, monolithic Bragg-cavities: An experimental platform for the enhancement of the optical interaction in 2D-materials

Knopf, H., Lundt, N., Bucher, T., Höfling, S., Tongay, S., Taniguchi, T., Watanabe, K., Staude, I., Schulz, U., Schneider, C. & Eilenberger, F., Feb 1 2019, In : Optical Materials Express. 9, 2, p. 598-610 13 p.

Research output: Contribution to journalArticle

5 Scopus citations

Magnetic-field-induced splitting and polarization of monolayer-based valley exciton polaritons

Lundt, N., Klaas, M., Sedov, E., Waldherr, M., Knopf, H., Blei, M., Tongay, S., Klembt, S., Taniguchi, T., Watanabe, K., Schulz, U., Kavokin, A., Höfling, S., Eilenberger, F. & Schneider, C., Sep 27 2019, In : Physical Review B. 100, 12, 121303.

Research output: Contribution to journalArticle

Momentum-Dark Intervalley Exciton in Monolayer Tungsten Diselenide Brightened via Chiral Phonon

Li, Z., Wang, T., Jin, C., Lu, Z., Lian, Z., Meng, Y., Blei, M., Gao, M., Taniguchi, T., Watanabe, K., Ren, T., Cao, T., Tongay, S., Smirnov, D., Zhang, L. & Shi, S. F., Dec 24 2019, In : ACS nano. 13, 12, p. 14107-14113 7 p.

Research output: Contribution to journalArticle

Observation of moiré excitons in WSe2/WS2 heterostructure superlattices

Jin, C., Regan, E. C., Yan, A., Iqbal Bakti Utama, M., Wang, D., Zhao, S., Qin, Y., Yang, S., Zheng, Z., Shi, S., Watanabe, K., Taniguchi, T., Tongay, S., Zettl, A. & Wang, F., Mar 7 2019, In : Nature. 567, 7746, p. 76-80 5 p.

Research output: Contribution to journalArticle

90 Scopus citations

Optical valley Hall effect for highly valley-coherent exciton-polaritons in an atomically thin semiconductor

Lundt, N., Dusanowski, Ł., Sedov, E., Stepanov, P., Glazov, M. M., Klembt, S., Klaas, M., Beierlein, J., Qin, Y., Tongay, S., Richard, M., Kavokin, A. V., Höfling, S. & Schneider, C., Aug 1 2019, In : Nature nanotechnology. 14, 8, p. 770-775 6 p.

Research output: Contribution to journalArticle

3 Scopus citations

Passivation of Layered Gallium Telluride by Double Encapsulation with Graphene

Mercado, E., Zhou, Y., Xie, Y., Zhao, Q., Cai, H., Chen, B., Jie, W., Tongay, S., Wang, T. & Kuball, M., Nov 5 2019, In : ACS Omega. 4, 19, p. 18002-18010 9 p.

Research output: Contribution to journalArticle

Open Access

Perseverance of direct bandgap in multilayer 2D PbI 2 under an experimental strain up to 7.69%

Du, L., Wang, C., Xiong, W., Zhang, S., Xia, C., Wei, Z., Li, J., Tongay, S., Yang, F., Zhang, X., Liu, X. & Liu, Q., Feb 8 2019, In : 2D Materials. 6, 2, 025014.

Research output: Contribution to journalArticle

5 Scopus citations

Pressure dependence of direct optical transitions in ReS2 and ReSe2

Oliva, R., Laurien, M., Dybala, F., Kopaczek, J., Qin, Y., Tongay, S., Rubel, O. & Kudrawiec, R., Dec 1 2019, In : npj 2D Materials and Applications. 3, 1, 20.

Research output: Contribution to journalArticle

Open Access
3 Scopus citations

Strain-Tunable Single Photon Sources in WSe2 Monolayers

Iff, O., Tedeschi, D., Martín-Sánchez, J., Moczała-Dusanowska, M., Tongay, S., Yumigeta, K., Taboada-Gutiérrez, J., Savaresi, M., Rastelli, A., Alonso-González, P., Höfling, S., Trotta, R. & Schneider, C., Oct 9 2019, In : Nano Letters. 19, 10, p. 6931-6936 6 p.

Research output: Contribution to journalArticle

2 Scopus citations

Tunable electronic structure in gallium chalcogenide van der Waals compounds

Shevitski, B., Ulstrup, S., Koch, R. J., Cai, H., Tongay, S., Moreschini, L., Jozwiak, C., Bostwick, A., Zettl, A., Rotenberg, E. & Aloni, S., Oct 9 2019, In : Physical Review B. 100, 16, 165112.

Research output: Contribution to journalArticle

Ultrafast Zero-Bias Surface Photocurrent in Germanium Selenide: Promise for Terahertz Devices and Photovoltaics

Kushnir, K., Qin, Y., Shen, Y., Li, G., Fregoso, B. M., Tongay, S. & Titova, L. V., Feb 6 2019, In : ACS Applied Materials and Interfaces. 11, 5, p. 5492-5498 7 p.

Research output: Contribution to journalArticle

3 Scopus citations
2018
3 Scopus citations

Anomalous isoelectronic chalcogen rejection in 2D anisotropic vdW TiS3(1-:X)Se3x trichalcogenides

Agarwal, A., Qin, Y., Chen, B., Blei, M., Wu, K., Liu, L., Shen, Y., Wright, D., Green, M., Zhuang, H. & Tongay, S., Sep 7 2018, In : Nanoscale. 10, 33, p. 15654-15660 7 p.

Research output: Contribution to journalArticle

1 Scopus citations

Charge-tuneable biexciton complexes in monolayer WSe2

Barbone, M., Montblanch, A. R. P., Kara, D. M., Palacios-Berraquero, C., Cadore, A. R., De Fazio, D., Pingault, B., Mostaani, E., Li, H., Chen, B., Watanabe, K., Taniguchi, T., Tongay, S., Wang, G., Ferrari, A. C. & Atatüre, M., Dec 1 2018, In : Nature Communications. 9, 1, 3721.

Research output: Contribution to journalArticle

36 Scopus citations

Deterministic coupling of quantum emitters in WSe2 monolayers to plasmonic nanocavities

Iff, O., Lundt, N., Betzold, S., Tripathi, L. N., Emmerling, M., Tongay, S., Lee, Y. J., Kwon, S. H., Höfling, S. & Schneider, C., Oct 1 2018, In : Optics Express. 26, 20, p. 25944-25951 8 p.

Research output: Contribution to journalArticle

11 Scopus citations

Excitonic Complexes and Emerging Interlayer Electron-Phonon Coupling in BN Encapsulated Monolayer Semiconductor Alloy: WS0.6Se1.4

Meng, Y., Wang, T., Li, Z., Qin, Y., Lian, Z., Chen, Y., Lucking, M. C., Beach, K., Taniguchi, T., Watanabe, K., Tongay, S., Song, F., Terrones, H. & Shi, S. F., Jan 1 2018, (Accepted/In press) In : Nano Letters.

Research output: Contribution to journalArticle

5 Scopus citations

Highly crystalline synthesis of tellurene sheets on two-dimensional surfaces: Control over helical chain direction of tellurene

Yang, S., Chen, B., Qin, Y., Zhou, Y., Liu, L., Durso, M., Zhuang, H., Shen, Y. & Tongay, S., Oct 11 2018, In : Physical Review Materials. 2, 10, 104002.

Research output: Contribution to journalArticle

6 Scopus citations

Imaging of pure spin-valley diffusion current in WS2-WSe2 heterostructures

Jin, C., Kim, J., Iqbal Bakti Utama, M., Regan, E. C., Kleemann, H., Cai, H., Shen, Y., Shinner, M. J., Sengupta, A., Watanabe, K., Taniguchi, T., Tongay, S., Zettl, A. & Wang, F., May 25 2018, In : Science. 360, 6391, p. 893-896 4 p.

Research output: Contribution to journalArticle

31 Scopus citations

In-Plane Optical Anisotropy and Linear Dichroism in Low-Symmetry Layered TlSe

Yang, S., Hu, C., Wu, M., Shen, W., Tongay, S., Wu, K., Wei, B., Sun, Z., Jiang, C., Huang, L. & Wang, Z., Jan 1 2018, (Accepted/In press) In : ACS Nano.

Research output: Contribution to journalArticle

16 Scopus citations

Observation of bosonic condensation in a hybrid monolayer MoSe2-GaAs microcavity

Waldherr, M., Lundt, N., Klaas, M., Betzold, S., Wurdack, M., Baumann, V., Estrecho, E., Nalitov, A., Cherotchenko, E., Cai, H., Ostrovskaya, E. A., Kavokin, A. V., Tongay, S., Klembt, S., Höfling, S. & Schneider, C., Dec 1 2018, In : Nature Communications. 9, 1, 3286.

Research output: Contribution to journalArticle

12 Scopus citations

Optical spectroscopy of excited exciton states in MoS2 monolayers in van der Waals heterostructures

Robert, C., Semina, M. A., Cadiz, F., Manca, M., Courtade, E., Taniguchi, T., Watanabe, K., Cai, H., Tongay, S., Lassagne, B., Renucci, P., Amand, T., Marie, X., Glazov, M. M. & Urbaszek, B., Jan 26 2018, In : Physical Review Materials. 2, 1, 011001.

Research output: Contribution to journalArticle

32 Scopus citations

Perpendicular Optical Reversal of the Linear Dichroism and Polarized Photodetection in 2D GeAs

Zhou, Z., Long, M., Pan, L., Wang, X., Zhong, M., Blei, M., Wang, J., Fang, J., Tongay, S., Hu, W., Li, J. & Wei, Z., Jan 1 2018, (Accepted/In press) In : ACS Nano.

Research output: Contribution to journalArticle

25 Scopus citations

Tuning the optical and electrical properties of MoS2 by selective Ag photo-reduction

Kim, E., Lee, Y., Ko, C., Park, Y., Yeo, J., Chen, Y., Sung Choe, H., Allen, F. I., Rho, J., Tongay, S., Wu, J., Kim, K. & Grigoropoulos, C. P., Jul 2 2018, In : Applied Physics Letters. 113, 1, 013105.

Research output: Contribution to journalArticle

1 Scopus citations

Ultimate Control over Hydrogen Bond Formation and Reaction Rates for Scalable Synthesis of Highly Crystalline vdW MOF Nanosheets with Large Aspect Ratio

Shen, Y., Shan, B., Cai, H., Qin, Y., Agarwal, A., Trivedi, D. B., Chen, B., Liu, L., Zhuang, H., Mu, B. & Tongay, S., Dec 27 2018, In : Advanced Materials. 30, 52, 1802497.

Research output: Contribution to journalArticle

5 Scopus citations
2017

Angle resolved vibrational properties of anisotropic transition metal trichalcogenide nanosheets

Kong, W., Bacaksiz, C., Chen, B., Wu, K., Blei, M., Fan, X., Shen, Y., Sahin, H., Wright, D., Narang, D. S. & Tongay, S., Mar 28 2017, In : Nanoscale. 9, 12, p. 4175-4182 8 p.

Research output: Contribution to journalArticle

28 Scopus citations

Anomalous Above-Gap Photoexcitations and Optical Signatures of Localized Charge Puddles in Monolayer Molybdenum Disulfide

Borys, N. J., Barnard, E. S., Gao, S., Yao, K., Bao, W., Buyanin, A., Zhang, Y., Tongay, S., Ko, C., Suh, J., Weber-Bargioni, A., Wu, J., Yang, L. & Schuck, P. J., Feb 28 2017, In : ACS Nano. 11, 2, p. 2115-2123 9 p.

Research output: Contribution to journalArticle

14 Scopus citations

Apparent breakdown of Raman selection rule at valley exciton resonances in monolayer Mo S2

Drapcho, S. G., Kim, J., Hong, X., Jin, C., Shi, S., Tongay, S., Wu, J. & Wang, F., Apr 13 2017, In : Physical Review B. 95, 16, 165417.

Research output: Contribution to journalArticle

9 Scopus citations

Controlling Structural Anisotropy of Anisotropic 2D Layers in Pseudo-1D/2D Material Heterojunctions

Chen, B., Wu, K., Suslu, A., Yang, S., Cai, H., Yano, A., Soignard, E., Aoki, T., March, K., Shen, Y. & Tongay, S., Sep 13 2017, In : Advanced Materials. 29, 34, 1701201.

Research output: Contribution to journalArticle

17 Scopus citations

Dynamic Optical Tuning of Interlayer Interactions in the Transition Metal Dichalcogenides

Mannebach, E. M., Nyby, C., Ernst, F., Zhou, Y., Tolsma, J., Li, Y., Sher, M. J., Tung, I. C., Zhou, H., Zhang, Q., Seyler, K. L., Clark, G., Lin, Y., Zhu, D., Glownia, J. M., Kozina, M. E., Song, S., Nelson, S., Mehta, A., Yu, Y. & 16 others, Pant, A., Aslan, O. B., Raja, A., Guo, Y., Dichiara, A., Mao, W., Cao, L., Tongay, S., Sun, J., Singh, D. J., Heinz, T. F., Xu, X., Macdonald, A. H., Reed, E., Wen, H. & Lindenberg, A. M., Dec 13 2017, In : Nano Letters. 17, 12, p. 7761-7766 6 p.

Research output: Contribution to journalArticle

16 Scopus citations

Environmental stability of 2D anisotropic tellurium containing nanomaterials: Anisotropic to isotropic transition

Yang, S., Cai, H., Chen, B., Ko, C., Özçelik, V. O., Ogletree, D. F., White, C. E., Shen, Y. & Tongay, S., Sep 14 2017, In : Nanoscale. 9, 34, p. 12288-12294 7 p.

Research output: Contribution to journalArticle

17 Scopus citations

Excitonic linewidth approaching the homogeneous limit in MoS2-based van der Waals heterostructures

Cadiz, F., Courtade, E., Robert, C., Wang, G., Shen, Y., Cai, H., Taniguchi, T., Watanabe, K., Carrere, H., Lagarde, D., Manca, M., Amand, T., Renucci, P., Tongay, S., Marie, X. & Urbaszek, B., May 18 2017, In : Physical Review X. 7, 2, 021026.

Research output: Contribution to journalArticle

174 Scopus citations

Few-layer MoS2 as nitrogen protective barrier

Akbali, B., Yanilmaz, A., Tomak, A., Tongay, S., Celebi, C. & Sahin, H., Sep 13 2017, In : Nanotechnology. 28, 41, 415706.

Research output: Contribution to journalArticle

4 Scopus citations

Monolayered MoSe2: A candidate for room temperature polaritonics

Lundt, N., Maryński, A., Cherotchenko, E., Pant, A., Fan, X., Tongay, S., Sek, G., Kavokin, A. V., Höfling, S. & Schneider, C., Mar 1 2017, In : 2D Materials. 4, 1, 015006.

Research output: Contribution to journalArticle

22 Scopus citations

Novel Surface Molecular Functionalization Route to Enhance Environmental Stability of Tellurium Containing 2D Layers

Yang, S., Qin, Y., Chen, B., Özçelik, V. O., White, C. E., Shen, Y., Yang, S. & Tongay, S., Feb 10 2017, (Accepted/In press) In : Unknown Journal.

Research output: Contribution to journalArticle

6 Scopus citations

Observation of ultralong valley lifetime in WSe2/MoS2 heterostructures

Kim, J., Jin, C., Chen, B., Cai, H., Zhao, T., Lee, P., Kahn, S., Watanabe, K., Taniguchi, T., Tongay, S., Crommie, M. F. & Wang, F., Jul 5 2017, In : Science Advances. 3, 7, e1700518.

Research output: Contribution to journalArticle

70 Scopus citations

On Optical Dipole Moment and Radiative Recombination Lifetime of Excitons in WSe2

Jin, C., Kim, J., Wu, K., Chen, B., Barnard, E. S., Suh, J., Shi, Z., Drapcho, S. G., Wu, J., Schuck, P. J., Tongay, S. & Wang, F., May 18 2017, In : Advanced Functional Materials. 27, 19, 1601741.

Research output: Contribution to journalArticle

13 Scopus citations