Monday, August 17, 2015

Abstract-Engineering Photophenomena in Large, 3D Structures Composed of Self-Assembled van der Waals Heterostructure Flakes

  1. M. Bala Murali Krishna1
  2. Michael K. L. Man1
  3. Soumya Vinod2
  4. Catherine Chin1,
  5. Takaaki Harada1
  6. Jaime Taha-Tijerina2,
  7. Chandra Sekhar Tiwary3
  8. Patrick Nguyen2,
  9. Patricia Chang4
  10. Tharangattu N. Narayanan5
  11. Angel Rubio6,7
  12. Pulickel M. Ajayan2
  13. Saikat Talapatra8,9 and
  14. Keshav M. Dani1,*
Article first published online: 17 AUG 2015
DOI: 10.1002/adom.201500296
A photocapacitive, dissipationless, optoelectronic terahertz response is observed in robust 3D van der Waals heterostructured flakes of hexagonal boron nitride and graphene. The response is fundamentally distinct from that of the parent materials and can be tuned from insulating to photocapacitive to semiconducting by varying the composition. Such hybrid structures have broad implications for tunable optoelectronic materials and potential terahertz devices.

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