Ultrafast Laser Lab
Hui Zhao Research Group

Publications

2019

75. Xufan Li, Jingjie Zhang, Alexander Puretzky, Anthony Yoshimura, Xiahan Sang, Qiannan Cui, Yuanyuan Li, Liangbo Liang, Avik Ghosh, Hui Zhao, Raymond Unocic, Vincent Meunier, Christopher Rouleau, Bobby Sumpter, David Geohegan, and Kai Xiao*, Isotope-engineering the thermal conductivity of two-dimensional MoS2, ACS Nano 13, 2481-2489 (2019).

74. Matthew Z. Bellus, Zhibin Yang, Peymon Zereshki, Jianhua Hao, Shu Ping Lau, and Hui Zhao*, Efficient Hole Transfer from Monolayer WS2 to Ultrathin Amorphous Black Phosphorus, Nanoscale Horizons 4, 236-242 (2019). 

73. Shudi Pan, Weijin Kong, Jianhua Liu, XIaohui Ge, Peymon Zereshki, Shengcai Hao, Dawei He, Yongsheng Wang, Hui Zhao*, Understanding Spatiotemporal Photocarrier Dynamics in Monolayer and Bulk MoTe2 for Optimized Optoelectronic Devices, ACS Applied Nano Materials 2, 459-464 (2019).

72. Qiannan Cui*, Yuanyuan Li, Jianhua Chang, Hui Zhao, and Chunxiang Xu*, Temporally Resolving Synchronous Degenerate and Nondegenerate Two-Photon Absorption in 2D Semiconducting Monolayers (Cover Story), Laser & Photonics Reviews 13, 1800225 (2019).

2018

71. Peymon Zereshki, Yaqing Wei, Run Long*, and Hui Zhao*, Layer-Coupled States Facilitate Ultrafast Charge Transfer in a Transition Metal Dichalcogenide Trilayer Heterostructure, The Journal of Physical Chemistry Letters 9, 5970-5978 (2018).

70. Jiaqi He, Taishen Li, Lu Zhang, Dawei He*, Yongsheng Wang, Huaiyi Ding*, Nan Pan, and Hui Zhao, Efficient Energy Transfer in In2Se3-MoSe2 van der Waals Heterostructures, ACS Omega 3, 11930-11936 (2018). 

69. Jiaqi He, Lu Zhang, Dawei He*, Yongsheng Wang*, Zhiyi He, and Hui Zhao, Ultrafast Transient Absorption Measurements of Photocarrier Dynamics in Monolayer and Bulk ReSe2, Optics Express 26, 21501-21509 (2018).

68. Samuel D. Lane and Hui Zhao*, Unipolar Optical Doping and Extended Photocarrier Lifetime in Graphene by Band Aliognment Engineering, Nano Futures 2, 035003 (2018). 
Altmetric: 45 (94%); News: Materials Today; PV Magezine; Science Daily; Nano Werk; Eurek Alert; Space Daily; KU News Release.

67. Matthew Z. Bellus, Masoud Mahjouri-Samani, Samuel D. Lane, Akinola D. Oyedele, Xufan Li, Alexander A. Puretzky, David Geohegan, Kai Xiao, and Hui Zhao*, Photocarrier Transfer Across Monolayer MoS2-MoSe2 Lateral Heterojunctions, ACS Nano 12, 7068-7092 (2018). 

66. Peymon Zereshki, Yaqing Wei, Frank Ceballos, Matthew Z. Bellus, Samuel D. Lane, Shudi Pan, Run Long*, and Hui Zhao*, Photocarrier Dynamics in Monolayer Phosphorene and Bulk Black Phosphorus, Nanoscale 10, 11307-11313.

65. Ming Li, Matthew Z. Bellus, Jun Dai, Liang Ma, Xiuling Li, Hui Zhao*, and Xiao Cheng Zeng*, A Type-I van der Waals Heterobilayer of WSe2/MoTe2, Nanotechnology 29, 335203 (2018). 

64. Siqi Zhao, Dawei He, Jiaqi He, Xinwu Zhang, Lixin Yi, Yongsheng Wang*, and Hui Zhao*, Probing Excitons in Transition Metal Dichalcogenidesby Drude-Like Exciton Intraband Absorption​, Nanoscale 10, 9538-9546 (2018).

2017

63. Yuanyuan Li, Qingfeng Liu, Qiannan Cui, Zeming Qi*, Judy Z. Wu, and Hui Zhao*, Effect of Rhenium Dopants on Photocarrier Dynamics and Optical Properties of Monolayer, Few-Layer, and Bulk MoS2, Nanoscale 9, 19360-19366 (2017). 

62. Yuanyuan Li, Qiannan Cui, Frank Ceballos, Samuel D. Lane, Zeming Qi*, and Hui Zhao*, Ultrafast Interlayer Electron Transfer in Incommensurate Transition Metal Dichalcogenide Homo-bilayers, Nano Letters 17, 6661. 

61. Tika R. Kafle, Bhupal Kattel, Samuel D. Lane, Ti Wang, Hui Zhao, and Wai-Lun Chan*, Charge Transfer Exciton and Spin Flipping at Organic-Transition Metal Dichalcogenide Interfaces, ACS Nano 11, 10184-10192 (2017).

60. Xinwu Zhang, Dawei He, Lixin Yi*, Siqi Zhao, Jiaqi He, Yongsheng Wang*, and Hui Zhao, Electron Dynamics in MoS2-Graphite Heterostructures, Nanoscale 9, 14533 (2017). 

59. Frank Ceballos, Peymon Zereshki, and Hui Zhao*, Separating Electrons and Holes by Monolayer Increments in van der Waals Heterostructures, Physical Review Materials 1, 044001 (2017).

58. Eric E. Hroblak, Alessandro Principi, Hui Zhao, and Giovanni Vignale*, Electrically Induced Charge-Density Waves in a Two-Dimensional Electron Liquid: Effects of Negative Electronic Compressibility, Physical Review B 96, 075422 (2017). 

57. Qiannan Cui, Rodrigo A. Muniz, John E. Sipe, and Hui Zhao*, Strong and Anisotropy Third Harmonic Generation in Monolayer ReS2, Physical Review B 95, 165406 (2017). 

56. Matthew Z. Bellus, Zhibin Yang, Jianhua Hao, Shu Ping Lau*, and Hui Zhao*, Amorphous Two-Dimensional Black Phosphorus with Exceptional Photocarrier Transport Properties, 2D Materials 4, 025063 (2017).

55. Frank Ceballos, Ming-Gang Ju, Samuel D. Lane, Xiao Cheng Zeng*, and Hui Zhao*, Highly Efficient and Anomalous Charge Transfer in van der Waals Trilayer Semiconductors​, Nano Letters 17, 1623-1628 (2017). 
Altmetric: 75 (96%). News: NSF News From the Field (Frontpage image); ZAP; ECN; Health Madicine Network; Science Alert; Nano Werk; Eurek Alert; Phys.org; KU News Release

54. Jiaqi He, Dawei He, Yongsheng Wang*, and Hui Zhao*, Probing Effect of Electric Field on Photocarrier Transfer in Graphene-WS2 van der Waals Heterostructures​, Optics Express 25, 1949-1957 (2017). 

53. Frank Ceballos and Hui Zhao*, Ultrafast Laser Spectroscopy of Two-Dimensional Materials Beyond Graphene (Feature Article), Advanced Functional Materials 27, 1604509 (2017). 

52. Xufan Li, Alexander A. Puretzky, Xiahan Sang, Santosh KC, Mengkun Tian, Frank Ceballos, Masoud Mahjouri-Samani, Kai Wang, Raymond R. Unocic, Hui Zhao, Christopher M. Rouleau, David B. Geohegan, Kai Xiao*, Suppression of Defects and Deep Levels Using Isoelectronic Tungsten Alloying in Monolayer MoSe2 (Cover Story), Ad​vanced Functional Material 27, 1603805 (2017).

51. Shudi Pan, Frank Ceballos, Matthew Z. Bellus, Peymon Zereshki, and Hui Zhao*, Ultrafast Charge Transfer Between MoTe2 and MoS2 Monolayers, 2D Materials 4, 015033 (2017). 

50. Matthew Z. Bellus, Ming Li, Samuel D. Lane, Frank Ceballos, Qiannan Cui, Xiao Cheng Zeng*, and Hui Zhao*, Type-I van der Waals heterostructure Formed by MoS2 and ReS2 Monolayers (Cover Story), Nanoscale Horizons, 2, 31-36 (2017).
Altmetic: 61 (96%); News: I4U News; Photonics.com; Lab Manager; Phys.org; Controlled Enviroment; Nano Werk; News Wise; KU News Release.

2016

49. Zhong Lin, Amber McCreary, Natalie Briggs, Shruti Subramanian, Kehao Zhang,Yifan Sun, Xufan Li, Nicholas J. Borys, Hongtao Yuan, Susan K. Fullerton-Shirey, Alexey Chernikov, Hui Zhao, Stephen McDonnel, Aaron M Lindenberg, Kai Xiao, Brian J LeRoy, Marija Drndić, James C. M. Hwang, Jiwoong Park, Manish Chhowalla, Raymond E. Schaak, Ali Javey, Mark C Hersam, Joshua Robinson, Mauricio Terrones*, 2D Materials Advances: From Large Scale Synthesis and Controlled Heterostructures to Improved Characterization Techniques, Defects and Applications, 2D Materials 3, 042001 (2016). 

48. Hui Zhao, Nonlinear Optical Experiments on Graphene, Chapter 6 of Optical Properties of Graphene, Edited by Rolf Binder, World Scientific (2016).

47. Qiannan Cui, Alexey Lipatov, Jamie Wilt, Matthew Z. Bellus, Xiao-Cheng Zeng, Judy Wu, Alexander Sinitskii*, and Hui Zhao*, Time-Resolved Measurements of Photocarrier Dynamics in TiS3 Nanoribbons, ACS Applied Materials & Interfaces 8, 18334 (2016).

46. Kai Wang*, Bing Huang, Mengkun Tian, Frank Ceballos, Ming-Wei Lin Masoud Mahjouri-Samani, Abdelaziz Boulesbaa, Alexander Puretzky, Christopher Rouleau, Mina Yoon, Hui Zhao, Kai Xiao, Gerd Duscher, and David Geohegan*, Interlayer Coupling in Twisted WSe2/WS2 Bilayer Heterostructures Revealed by Optical Spectroscopy, ACS Nano 10, 6612-6622 (2016). 

45. Frank Ceballos, Qiannan Cui, Matthew Z. Bellus, and Hui Zhao*, Exciton Formation in Monolayer Transition Metal Dichalcogenides, Nanoscale 8, 11681-11688 (2016). 

2015

44. Jiaqi He, Dawei He, Yongsheng Wang*, and Hui Zhao*, Photocarrier Dynamics in Transition Metal Dichalcogenide Alloy Mo0.5W0.5S2, Optics Express 23, 33370-33377 (2015). 

43. Frank Ceballos, Matthew Z. Bellus, Hsin-Ying Chiu, and Hui Zhao*, Probing Charge Transfer Excitons in a MoSe2-WS2 van der Waals Heterostructure, Nanoscale 7, 17523-17528 (2015). 

42. Qiannan Cui, Jiaqi He, Matthew Z. Bellus, Mirzojamhed Mirzokarimov, Tino Hofmann, Hsin-Ying Chiu, Matthew Antonik, Dawei He, Yongsheng Wang*, and Hui Zhao*,Transient Absorption Measurements on Anisotropic Monolayer ReS2, Small 11, 5565-5571 (2015). 

41. Matthew Z. Bellus, Frank Ceballos, Hsin-Ying Chiu*, and Hui Zhao*, Tightly Bound Trions in Transition Metal Dichalcogenide Heterostructures, ACS Nano 9, 6459-6464 (2015). 

40. Jiaqi He, Dawei He, Yongsheng Wang*, Qiannan Cui, Matthew Z. Bellus,  Hsin-Ying Chiu, and Hui Zhao*, Exceptional and Anisotropic Transport Properties of Photocarriers in Black Phosphorus,  ACS Nano 9, 6436-6442 (2015). 

39. Jiaqi He, Dawei He, Yongsheng Wang*, Qiannan Cui, Frank Ceballos, and Hui Zhao*, Spatiotemporal Dynamics of Excitons in Monolayer and Bulk WS2, Nanoscale 7, 9526-9531 (2015). 

38. Maogang Gong, Tejas A. Shastry, Qiannan Cui, Ryan R. Kohlmeyer, Kyle A. Luck, Andrew Rowberg, Tobin J. Mark, Michael F. Durstock, Hui Zhao, Mark C. Hersam, and Shenqiang Ren*, Understanding Charge Transfer in Carbon Nanotube-Fullerene Bulk Heterojunctions, ACS Applied Materials & Interfaces 7, 7428-7435 (2015). 

37. Qiannan Cui and Hui Zhao*, Coherent Control of Nanoscale Ballistic Currents in Transition Metal Dichalcogenide ReS2, ACS Nano 9, 3935-3941 (2015). 

2014

36. Jiaqi He, Nardeep Kumar, Matthew Z. Bellus, Hsin-Ying Chiu, Dawei He, Yongsheng Wang*, and Hui Zhao*, Electron Transfer and Coupling in Graphene-Tungsten Disulfide van der Waals Heterostructures, Nature Communications 5, 5622 (2014). 
Altmetric: 79 (98%); News: NSF News from the Field (Frontpage Image); Controlled Enviroment; R&D Magezine; Science Daily; Phys.org; Eurek Alert; Nanotechnology Now; KU News Release.

35. Frank Ceballos, Matthew Z. Bellus, Hsin-Ying Chiu*, and Hui Zhao*, Ultrafast Charge Separation and Indirect Exciton Formation in a MoS2-MoSe2 van der Waals Heterostructure, ACS Nano 8, 12717-12724 (2014).

34. Nardeep Kumar, Jiaqi He, Dawei He, Yongsheng Wang*, and Hui Zhao*, Valley and Spin Dynamics in MoSe2 Two-Dimensional Crystals, Nanoscale 6, 12690 (2014).

33. Keliang He, Nardeep Kumar, Liang Zhao, Zefang Wang, Kin Fai Mak, Hui Zhao, and Jie Shan, Tightly Bound Excitons in Monolayer WSe2, Physical Review Letters 113, 026803 (2014). 
ESI Hot Paper (Top 0.1%).

32. Qiannan Cui, Frank Ceballos, Nardeep Kumar, and Hui Zhao*, Transient Absorption Microscopy of Monolayer and Bulk WSe2, ACS Nano 8, 2970-2976 (2014). 
Altmetric: 14 (91%); News: Phys.org; Nano Werk; KU News Release.

31. Nardeep Kumar, Qiannan Cui, Frank Ceballos, Dawei He, Yongsheng Wang* and Hui Zhao*, Exciton Diffusion in Monolayer and Bulk MoSe2, Nanoscale 6, 4915-4949 (2014).

30. Nardeep Kumar, Qiannan Cui, Frank Ceballos, Dawei He, Yongsheng Wang*, Hui Zhao*, Exciton-Exciton Annihilation in MoSe2 Monolayers, Physical Review B 89, 125427 (2014).
ESI Highly Cited Paper (Top 1%).

29. Hui Zhao, Second Harmonic Microscopy Allows the Detection of Single Atomic Layers,  SPIE Newsroom, DOI: 10.1117/2.1201401.005262 (2014).

28. Rui Wang,Hui-Chun Chien, Jatinder Kumar, Nardeep Kumar, Hsin-Ying Chiu*, and Hui Zhao*, Third-Harmonic Generation in Ultrathin Films of MoS2, ACS Applied Materials & Interfaces 6, 314-318 (2014).

2013

27. Rui Wang, Paul Jacobs, Hui Zhao, and Arthur L. Smirl*, Quantum Interference and Control of the Dynamic Franz-Keldysh Effect: Generation and Detection of Terahertz Space-Charge, Applied Physics Letters 102, 251110 (2013).

26. Caitlin Rochford, Nardeep Kumar, Jianwei Liu, Hui Zhao, and Judy Wu*, All-optical Technique to Correlate Defect Structure and Carrier Transport in Transferred Graphene Films, ACS Applied Materials & Interfaces 5, 7176-7180 (2013). 

25. Maogang Gong, Alec Kirkeminde, Nardeep Kumar, Hui Zhao, and Shenqiang Ren*, Ionic-Passivated FeS2 Photocapacitors for Energy Conversion and Storage, Chemical Communications 49, 9260-9262 (2013).

24. Nardeep Kumar, Sina Najmaei, Qiannan Cui, Frank Ceballos, Pulickel M. Ajayan, Jun Lou, and Hui Zhao*, Second Harmonic Microscopy of Monolayer MoS2, Physical Review B 87, 161403(R) (2013). [Rapid Communication] [Editor's Suggestion]
ESI Highly Cited Paper (Top 1%).

23. Nardeep Kumar, Jatinder Kumar, Chris Gerstenkorn, Rui Wang, Hsin-Ying Chiu, Arthur L. Smirl, and Hui Zhao*, Third Harmonic Generation in Graphene and Graphite Thin Films, Physical Review B 87, 121406(R) (2013). [Rapid Communication]

22. Nardeep Kumar, Jiaqi He, Dawei He, Yongsheng Wang*, and Hui Zhao*, Charge Carrier Dynamics in Bulk MoS2 Crystal Studied by Transient Absorption Microscopy, Journal of Applied Physics 113, 133702 (2013). 

2012

21. Brian A. Ruzicka, Rui Wang, Jessica Lohrman, Shenqiang Ren*, and Hui Zhao*, Exciton Diffusion in Semiconducting Single-Walled Carbon Nanotubes Studied by Transient Absorption Microscopy, Physical Review B 86, 205417 (2012). 

20. Rui Wang, Brian A. Ruzicka, Nardeep Kumar, Matthew Z. Bellus, Hsin-Ying Chiu*, and Hui Zhao*, Ultrafast and Spatially Resolved Studies of Charge Carriers in Atomically-Thin Molybdenum Disulfide, Physical Review B 86, 045406 (2012). 

19. Brian A. Ruzicka, Shuai Wang, Jianwei Liu, Kian-Ping Loh, Judy Z. Wu, and Hui Zhao*, Spatially Resolved Pump-Probe Study of Single-Layer Graphene Produced by Chemical Vapor Deposition [Invited], Optics Materials Express 2, 708 (2012).

18. Brian A. Ruzicka, Lalani K. Werake, Guowei Xu, Jacob B. Khurgin, E. Ya. Sherman, Judy Z. Wu, and Hui Zhao*, Second-Harmonic Generation induced by Electric Currents in GaAs, Physical Review Letters 108, 077403 (2012). 
Featured in Physics Today (Frequency-Doubled Photons can Measure Current Density, March of 2012); Featured in Physics-Uspekhi (Vol. 55, Issue 4) as Physics News: Detection of Electric Currents in GaAs Based on Second-Harmonic Generation).

17. Alec Kirkeminde, Brian A. Ruzicka, Rui Wang, Sarah Puna, Hui Zhao, and Shenqiang Ren*, Synthesis and Optoelectronic Properties of Two-Dimensional FeS2 Nanoplates, ACS Applied Materials & Interfaces 4, 1174 (2012). 

16. Brian A. Ruzicka and Hui Zhao*, Optical Studies of Ballistic Currents in Semiconductors [Invited], Journal of the Optical Society of America B 29, A43 (2012).

2011

15. Nardeep Kumar, Brian A. Ruzicka, Nicholas P. Butch, P. Syers, K. Kirshenbaum, Johnpierre Paglione,and Hui Zhao*, Spatially Resolved Femtosecond Pump-Probe Study of Topological Insulator Bi2Se3, Physical Review B 83, 235306 (2011).
Selected as Editor's Suggestions

14. Brian A. Ruzicka, Nardeep Kumar, Shuai Wang, Kian-Ping Loh, and Hui Zhao*, Two-Probe Study of Hot Carriers in Reduced Graphene Oxide, Journal of Applied Physics 109, 084322 (2011). 

13. Lalani K. Werake, Brian A. Ruzicka,and Hui Zhao*, Observation of Intrinsic Inverse Spin Hall Effect, Physical Review Letters,106, 107205 (2011). 
Featured in Physical Review Focus (Electrons Curve without Help,02/25/2011) and MRS News.

2010

12. Brian A. Ruzicka, Lalani K. Werake, Hassama Samassekou, and Hui Zhao*, Ambipolar Diffusion of Photoexcited Carriers in Bulk GaAs, Applied Physics Letters 97, 262119 (2010). 

11. Hui Zhao and Arthur L. Smirl*, Injection and Detection of Ballistic Electrical Currents in Silicon, Applied Physics Letters 97, 212106 (2010). 

10. Brian A. Ruzicka, Shuai Wang, Lalani K. Werake, Ben Weintrub, Kian-Ping Loh, and Hui Zhao*, Hot Carrier Diffusion in Graphene, Physical Review B 82, 195414 (2010).

9. Eric J. Loren, Hui Zhao, and Arthur L. Smirl*, All-Optical Injection and Detection of Ballistic Charge Currents in Germanium, Journal of Applied Physics 108, 083111 (2010). 

8. Lalani K. Werake and Hui Zhao*, Observation of Second-Harmonic Generation Induced by Pure Spin Currents, Nature Physics 6, 875 2010.
 Featured in NSF News From the Field.

7. Brian A. Ruzicka, Lalani K. Werake, Hui Zhao*, Shuai Wang, and Kian-Ping Loh, Femtosecond Pump-Probe Studies of Reduced Graphene Oxide Thin Films, Applied Physics Letters 96, 173106 (2010).

2009

6. Eric J. Loren, Brian A. Ruzicka, Lalani K. Werake, Hui Zhao, Henry M. van Driel, and Arthur L.Smirl*, Optical Injection and Detection of Ballistic Pure Spin Currents in Ge, Applied Physics Letters 95, 092107 (2009).

5. Brian A. Ruzicka and Hui Zhao*, Power Dependence of Pure Spin Current Injection by Quantum Interference. Physical Review B 79, 155204 (2009).

4. Hui Zhao, Matthew Mower, and Giovanni Vignale, Ambipolar Spin Diffusion and D'yakonov-Perel' Spin Relaxation in GaAs Quantum Wells. Physical Review B 79, 115321 (2009).

2008

3. Brian A. Ruzicka, Karl Higley, Lalani K. Werake, and Hui Zhao*, All-Optical Generation and Detection of Subpicosecond AC Spin-Current Pulses in GaAs, Physical Review B 78, 045314 (2008).
Selected as Editor's Suggestions.

2. Hui Zhao, Temperature Dependence of Ambipolar Diffusion in Silicon-On-Insulator, Applied Physics Letters 92, 112104 (2008).

1. Hui Zhao, Eric J. Loren, Arthur L. Smirl*, and Henry M. van Driel, Dynamics of Charge Current Injected in GaAs by Quantum Interference, Journal of Applied Physics 103, 053510 (2008).