Research
Research Interests
Semiconductor nanostructures, including quantum dots, nanowires, and two-dimensional atomic crystals
III-nitride materials and optoelectronic devices
Light emitting diodes, lasers, and Si photonics
Artificial photosynthesis, solar fuels, and solar cells
III-nitride and diamond based electronic devices
Selected Recent Publications
- A Pandey, J Gim, R Hovden, Z Mi, An AlGaN tunnel junction light emitting diode operating at 255 nm, Applied Physics Letters 117 (24), 241101, 2020.
- P Wang, DA Laleyan, A Pandey, Y Sun, Z Mi, Molecular beam epitaxy and characterization of wurtzite ScxAl1−xN, Applied Physics Letters 116 (15), 151903, 2020.
- P. Wang, A. Pandey, J. Gim, W. J. Shin, E. T. Reid, D. A. Laleyan, Y. Sun, D. Zhang, Z. Liu, Z. Zhong, R. Hovden, Z. Mi, Graphene-assisted molecular beam epitaxy of AlN for AlGaN deep-ultraviolet light-emitting diodes, Applied Physics Letters 116 (17), 171905, 2020.
- B. Zhou, P. Ou, N. Pant, S. Cheng, S. Vanka, S. Chu, R. T. Rashid, G. Botton, J. Song, and Z. Mi, Highly efficient binary copper−iron catalyst for photoelectrochemical carbon dioxide reduction toward methane, PNAS, 117 (3) 1330-1338, 2020.
- Y. H. Ra, R. T. Rashid, X. H. Liu, S. Sadaf, K. Mashooq, and Z. Mi, An Electrically Pumped Surface-Emitting Semiconductor Green Laser, Science Advances vol. 6, eaav7523, 2020.
- Y. Wu, X. Liu, P. Wang, D. A. Laleyan, K. Sun, Y. Sun, C. Ahn, M. Kira, E. Kioupakis, and Z. Mi, Monolayer GaN excitonic deep ultraviolet light emitting diodes, Applied Physics Letters 116 (1), 013101, 2020.
- D. A. Laleyan, N. Fernández-Delgado, E. T. Reid, P. Wang, A. Pandey, G. A. Botton, Z. Mi, Strain-free ultrathin AlN epilayers grown directly on sapphire by high-temperature molecular beam epitaxy, Applied Physics Letters 116 (15), 152102, 2020.
- B. Shan, S. Vanka, T.-T. Li, L. Troian-Gautier, M. K. Brennaman, Z. Mi, and T. J. Meyer, “Binary molecular-semiconductor p–n junctions for photoelectrocatalytic CO2 reduction,” Nature Energy, vol. 4, 290, 2019.
- Y. Sun, W. Shin, D. A. Laleyan, P. Wang, A. Pandey, X. Liu, Y. Wu, M. Soltani, and Z. Mi, “Ultra-high Q Microring Resonators on Single Crystal Aluminum Nitride on Sapphire Platform,” Opt. Lett., 44, 5679, 2019.
- A. Pandey, X. Liu, Z. Deng, W. J. Shin, D. A. Laleyan, K. Mashooq, E. T. Reid, E. Kioupakis, P. Bhattacharya, and Z. Mi, “Enhanced doping efficiency of ultrawide band gap semiconductors by metal-semiconductor junction assisted epitaxy,” Phys. Rev. Mater., vol. 3, 053401, 2019.
- B Zhou, X Kong, S Vanka, S Cheng, N Pant, S Chu, P Ghamari, Y Wang, G. Botton, H. Cuo, Z. Mi, “A GaN: Sn nanoarchitecture integrated on a silicon platform for converting CO2 to HCOOH by photoelectrocatalysis,” Energy & Environmental Science 12 (9), 2842-2848, 2019.
- Mingxin Liu, Yichen Wang, Xianghua Kong, Roksana T Rashid, Sheng Chu, Chen-Chen Li, Zoë Hearne, Hong Guo, Zetian Mi, Chao-Jun Li, Direct catalytic methanol-to-ethanol photo-conversion via methyl carbene, Chem 5 (4), 858-867, 2019.
- D. A. Laleyan, K. Mengle, S. Zhao, Y. Wang, E. Kioupakis, Z. Mi, “Effect of growth temperature on the structural and optical properties of few-layer hexagonal boron nitride by molecular beam epitaxy,” Opt. Exp., vol. 26, 23031, 2018.
- S. Zhao, and Z. Mi, “AlGaN Nanowires: Path to Electrically Injected Semiconductor Deep Ultraviolet Lasers,” IEEE J. Quantum Electron., vol. 54, 1, 2018.
- B. Zhou, X. Kong, S. Vanka, S. Chu, P. Ghamari, Y. Wang, N. Pant, I. Shih, H. Guo, and Z. Mi, “Gallium nitride nanowire as a linker of molybdenum sulfides and silicon for photoelectrocatalytic water splitting,” Nature Commun., vol. 9, 3856, 2018.
- S. Vanka, E. Arca, S. Cheng, K. Sun, G. A. Botton, G. Teeter, and Z. Mi, “High Efficiency Si Photocathode Protected by Multifunctional GaN Nanostructures,” Nano Lett., vol. 18, 6530, 2018.
- X. Guan, F. A. Chowdhury, Y. Wang, N. Pant, S. Vanka, M. L. Trudeau, L. Guo, L. Vayssieres, and Z. Mi, “Making of an industry-friendly artificial photosynthesis device,” ACS Energy Lett., vol. 3, 2230, 2018.
- F. A. Chowdhury, M. L. Trudeau, H. Guo and Z. Mi, “A Photochemical Diode Artificial Photosynthesis System for Unassisted High Efficiency Overall Pure Water Splitting,” Nature Communications, vol. 9, 1707, 2018.
- S. Chu, P. Ou, P. Ghamari, S. Vanka, B. Zhou, I. Shih, J. Song and Z. Mi, “Photoelectrochemical CO2 Reduction into Syngas with the Metal/Oxide Interface,” J. Am. Chem. Soc., vol. 140, 7869, 2018.
- L. Li, Y. Wang, S. Vanka, X. Mu, Z. Mi, and C.J. Li “Nitrogen photofixation over III‐nitride nanowires assisted by ruthenium clusters of low atomicity”, Angewandte Chemie, vol. 129, 8827, 2017.
- D. A. Laleyan, S. Zhao, S. Y. Woo, H. N. Tran, H. B. Le, T. Szkopek, H. Guo, G. A. Botton, and Z. Mi “AlN/h-BN heterostructures for Mg dopant-free deep ultraviolet photonics”, Nano Lett., vol. 17, 3737, 2017.
- N. H. Tran, B. H. Le, S. Zhao, and Z. Mi, “On the mechanism of highly efficient p-type conduction of Mg-doped ultra-wide-bandgap AlN nanostructures”, Appl. Phys. Lett., vol. 110, 032102, 2017.
- Y.-H. Ra, R. Wang, S. Y. Woo, M. Djavid, S. M. Sadaf, J. Lee, G. A. Botton, and Z. Mi, “Full-color single nanowire pixels for projection displays,” Nano Lett., vo. 16, 4608, 2016.
- S. Zhao, X. Liu, Y. Wu, and Z. Mi, “An electrically pumped 239 nm AlGaN nanowire laser operating at room temperature,” Appl. Phys. Lett., vol. 109, 191106, 2016.
- M. G. Kibria, R. Qiao, W. Yang, I. Boukahil, X. Kong, F. A. Chowdhury, M. L. Trudeau, W. Ji, H. Guo, F. J. Himpsel, L. Vayssieres, and Z. Mi, “Atomic scale origin of long term stability and high performance of p-GaN nanowire-arrays for photocatalytic overall pure water splitting”, Adv. Mater., vol. 28, 8388-8397, 2016.
- B. Le, S. Zhao, X. Liu, S. Y. Woo, G. A. Botton, and Z. Mi, “Controlled coalescence of AlGaN nanowire arrays: An architecture for dislocation-free planar ultraviolet photonic device applications”, Adv. Mater., vol. 28, 8446-8454, 2016.
- K. H. Li, X. Liu, Q. Wang, S. Zhao, and Z. Mi, “Ultralow threshold, electrically injected AlGaN nanowire ultraviolet lasers on Si operating at low temperature,” Nature Nanotech., vol. 10, 140, 2015.