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Our Research Areas

Semiconductors on Anything

We develop novel growth techniques for single crystalline semiconductors on technologically relevant, non-epitaxial substrates. Using these techniques, we then fabricate electronic and photonic devices for next generation architectures and systems.

Recent Papers

  1. Sarkar, et al. “Confined Liquid Phase Growth of Crystalline Compound Semiconductors on Any Substrate“, ACS Nano, DOI: 10.1021/acsnano.8b01819.
  2. Sarkar, et al. “Buffer insensitive optoelectronic quality of InP-on-Si with templated liquid phase growth“, JVST B, 36 (3), 031204 (2018).  
  3. Sarkar, et al. “Mimicking Biological Synaptic Functionality with an Indium Phosphide Synaptic Device on Silicon for Scalable Neuromorphic Computing”, ACS Nano, DOI:10.1021/acsnano.7b08272, 2018.
  4. Lin, et al. A Scalable Indium Phosphide Thin-Film Nanophotonics Platform for Photovoltaic and Photoelectrochemical Devices”, ACS Nano, 11 (5), 2017.

Current Funding

Heterogeneous III-V CMOS on Si via Direct Growth”, Principal Investigator, NSF, 8/1/16-7/31/19

Crystalline Electronic and Photonic Materials without an Epitaxial Template”, Principal Investigator, Semiconductor Research Corporation, 1/1/18 – 12/31/20

Past Funding

III-V Active Pixel, Ultrahigh Performance Sensors for Shortwave Infrared Focal Plane Arrays at Very Low Cost”, Principal Investigator, NASA JPL,5/1/2017 – 9/1/2017

Integrated Photonics for Electron Emitters

We have shown that integrated photonic circuits hold significant promise for ultra-fast and efficient modulation of electron emitters.

Recent Papers

  1. Rezaeifar, et al. “Independent tuning of work function and field enhancement factor in hybrid lanthanum hexaboride-graphene-silicon field emitters”, Journal of Vacuum Science and Technology B, 35 (6), 062202.
  2. Rezaeifar, et al. “Efficient and Ultrafast Optical Modulation of On-Chip Thermionic Emission Using Resonant Cavity Coupled Electron Emitters”, Journal of Vacuum Science & Technology B, 34 (4), 041228, 2016.


Current Funding

Optical Cavity Enhanced Electron Emitters”, Principal Investigator, AFOSR Young Investigator Program, 7/15/16-7/14/19.

Carbon Nano-tube (CNT) cathodes for Normal Conducting RF Guns”, Principal Investigator; DOE SBIR Phase II Subcontract, Radiabeam, LLC. 6/1/17-1/9/19.

Broadband Ultrafast Photon Source”, Principal Investigator, AFOSR DURIP, 7/1/18 – 6/31/19.

Hot Electron Electrochemistry

To study hot electrons and their use in electrochemistry, we explore both electrical and optical means of non-equilibrium electron generation and study how that modifies electrochemical transfer rates.

Recent Papers

  1. B. Hou, L. Shen, H. Shi, R. Kapadia, S.B. Cronin, “Hot Electron-Driven Photocatalytic Water Splitting”, Physical Chemistry Chemical Physics, 19, 2877-2881, 2017.
  2. Hou, F. Rezaeifar, J. Qiu, G. Zeng, R. Kapadia, S.B. Cronin. “Prevention of surface recombination by electrochemical tuning of TiO2-passivated photocatalysts”, Applied Physics Letters, 111 (14), 141603, 2017.

Current Funding

A Novel Platform for Studying Hot Electron Spectroscopy of Electrochemical and Photoelectrochemical Reactions”, Co-Principal Investigator (PI: Steve Cronin), ACS Petroleum Research Fund, 9/1/15-8/31/18.