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Photoconductive response in organic charge transfer interfaces with high quantum efficiency

Author

Listed:
  • Helena Alves

    (INESC-MN and IN, University of Lisbon, Rua Alves Redol 9, 1000-029 Lisboa, Portugal)

  • Rui M. Pinto

    (INESC-MN and IN, University of Lisbon, Rua Alves Redol 9, 1000-029 Lisboa, Portugal
    CQFM, IST, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal)

  • Ermelinda S. Maçôas

    (CQFM, IST, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal)

Abstract

Organic semiconductors have unique optical, mechanical and electronic properties that can be combined with customized chemical functionality. In the crystalline form, determinant features for electronic applications, such as molecular purity, the charge mobility or the exciton diffusion length, reveal a superior improved performance when compared with materials in a more disordered form. However, the use of organic single crystals in devices is still limited to a few applications, such as field-effect transistors. Here we report the first example of photoconductive behaviour of single-crystal charge-transfer interfaces. The system composed of rubrene and 7,7,8,8-tetracyanoquinodimethane presents a responsivity reaching 1 A W−1, corresponding to an external quantum efficiency of nearly 100%. This result opens the possibility of using organic single-crystal interfaces in photonic applications.

Suggested Citation

  • Helena Alves & Rui M. Pinto & Ermelinda S. Maçôas, 2013. "Photoconductive response in organic charge transfer interfaces with high quantum efficiency," Nature Communications, Nature, vol. 4(1), pages 1-7, October.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2890
    DOI: 10.1038/ncomms2890
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    Cited by:

    1. Wenqing Xu & Guanheng Huang & Zhan Yang & Ziqi Deng & Chen Zhou & Jian-An Li & Ming-De Li & Tao Hu & Ben Zhong Tang & David Lee Phillips, 2024. "Nucleic-acid-base photofunctional cocrystal for information security and antimicrobial applications," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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