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  • Epitaxial perovskite FETs: Adv. Mater. 34, 2205055 (2022)
  • Rubrene FET: Nature Mater. 17, 2 (2018)
  • World's fastest OFETs
  • The 1st TMD FETs (WSe2 FET): Appl. Phys. Lett. 84, 3301 (2004)
  • The 1st TMD FETs (July 1, 2003)
  • Ultra-flexible OFETs: Nature Comm. 3, 1259 (2012)
  • Hall effect measurements in rubrene OFETs
  • Rubrene crystals: the best organic semiconductor
  • High-mobility rubrene OFETs, Rutgers 2003
  • Molecular resolution STM images of rubrene
  • Hybrid perovskite crystals: Nature Comm. 7, 12253 (2016)
  • C8-BTBT blend OFET for Hall measurements
  • Rubrene crystals
  • Rubrene crystals
  • SAM on organic semicond.: Nature Mater. 7, 84 (2008)
  • css image slider
  • Ionic-liquid gating of multiferroic oxides
Epitaxial perovskite FETs: Adv. Mater. 34, 2205055 (2022)1 Rubrene FET: Nature Mater. 17, 2 (2018)2 World's fastest OFETs3 The 1st TMD FET (WSe2 FET): Appl. Phys. Lett. 84, 3301 (2004) 4 The 1st TMD FETs (July 1, 2003) 5 Ultra-flexible OFETs: Nature Comm. 3, 1259 (2012)6 Hall effect measurements in rubrene OFETs7 Rubrene crystals: the best organic semiconductor8 High-mobility rubrene OFETs, Rutgers 20039 Molecular resolution STM images of rubrene10 Hybrid perovskite crystals: Nature Comm. 7, 12253 (2016)11 C8-BTBT blend OFET for Hall measurements12 Rubrene crystals13 Rubrene crystals14 SAM on organic semicond.: Nature Mater. 7, 84 (2008)15 SAM on graphene: Nano Lett. 10, 2427 (2010)16 Ionic-liquid gating of multiferroic oxides17
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We are a research group based in Rutgers University Physics Department in Piscataway, New Jersey, where we study the physics of novel semiconductors. Our research tends to revolve around the following themes:

  1. Fundamentals of charge carrier transport in organic semiconductors (OFETs).
  2. The fundamental optical properties of highly ordered organic semiconductors (exciton dynamics, photo-conductivity and the photovoltaic effect).
  3. Molecular self-assembly at functional interfaces.
  4. Novel inorganic layered semiconductors (dihalcogenides and graphene).
  5. Photo-physics of hybrid (organo-inorganic) perovskites.
  6. Ionic-liquid gating of multiferroic oxides.

Watch video: High-resolution ac Hall effect measurements [video]

Watch video: Vacuum lamination approach to high-performance OFETs [video-1]

Watch video: Crystallization of TES-ADT on flexible substrates [video-2]

Fall MRS 2012, Tutorial Lecture: "Organic single crystals 101" [download file]

Latest News (click individual entry for abstract)

  1. The 1st trully high-performance (intrinsic) perovskite FETs are demonstrated. Adv. Mater. 2022
  2. Trully water-based (green) lithography suitable for delicate materials is demonstrated. Adv. Funct. Mater. 2021
  3. Emergence of n-type (electron) charge transport in heavily p-doped polymers is observed. Nature Mater. 2021
  4. Photo-Hall effect is measured for the 1st time in organic semiconductors. Adv. Funct. Mater. 2020
  5. Hall effect and Raman measured in rubrene as functions of strain. Adv. Sci. 2019
  6. Hall effect in polycrystalline OFETs is investigated. Adv. Funct. Mater. 2019
  7. PL gating effect is discovered in perovskites. Materials Today 2019
  8. Correlated flux scaling of PC and PL in perovskites. Phys. Rev. Applied 2018
  9. Artifact-free extraction of mobility in 4-probe FETs. Adv. Funct. Mater. 2018
  10. Critical assessement of mobility extraction in FETs. Nature Mater. 2018
  11. Polarization-dependent photoinduced bias-stress in OFETs. ACS Appl. Mater. & Interfaces. 2017
  12. Extended carrier lifetimes and diffusion revealed in hybrid perovskites by Hall effect. Nature Comm. 2016
  13. Intrinsic carrier mobility in hybrid perovskites is studied across phase transitions. Advanced Mater. 2016
  14. "Partial" carrier coherence in organic semiconductors is understood. Sci. Reports. 2016
  15. High-resolution ac-Hall effect methodology for OFETs is developed. Phys. Rev. Applied. 2016
  16. Multi-particle interactions and non-linear photoconductivity in rubrene. Sci. Reports. 2015
  17. Ionic-liquid gating of multi-ferroic oxide SrRuO3. Sci. Reports. 2014
  18. Trap healing and very high-resolution Hall effect in org. semiconductors. Nature Mater. 2013
  19. Extremely flexible solution-processed organic devices are demonstrated. Nature Comm. 2012
  20. Dependence of nominal μ on VG sweep rate is revealed in disordered OFETs. PCCP 2012
  21. Bias stress effect is measured in "air-gap" OFETs. Advanced Mater. 2012
  22. Vacuum lamination approach to fabrication of high-performance OFETs. Advanced Mater. 2011
  23. The origin of PL spectral variability in crystalline organic semiconductors is revealed. Advanced Mater. 2011
  24. An amazing effect of photo-triggered diffusion of molecular oxygen in a crystalline organic semiconductor is reported. Advanced Mater. 2011
  25. The origin of the bias-stress instability in single-crystal OFETs is revealed. Phys. Rev. B 2010
  26. A very large exciton diffusion length (LEX ~ 3-8 μm) is observed in highly ordered organic semiconductors. Nature Mater. 2010
  27. D. J. Ellison from the group of Prof. Frisbie (University of Minnesota) has successfully applied Kelvin Probe Microscopy (KPM) to image SAM-rubrene system. Advanced Mater. 2010
  28. A high-density hole-doped regime in graphene is realized by growing FTS SAM on top of the single-layer graphene FETs. Nano Lett. 2010
  29. Microscopic mechanism of SAM nucleation and growth on organic surfaces is revealed. Advanced Funct. Mater. 2009
  30. A molecular self-assembly of silanes on organic semiconductors is discovered. Nature Mater. 2008