Multifunctional Deformable Organic Semiconductor Single Crystals

Durga Prasad Karothu, Ghada Dushaq, Ejaz Ahmed, Luca Catalano, Mahmoud Rasras, Panče Naumov

Research output: Contribution to journalArticlepeer-review


We report the first organic semiconductor crystal with a unique combination of properties that can be used as a multifunctional optoelectronic device. Mechanically flexible single crystals of 9,10-bis(phenylethynyl)anthracene (BPEA) can function as a phototransistor, photoswitch, and an optical waveguide. The material can exist as two structurally different solid phases, with single crystals of one of the phases being elastic at room temperature while those of the other are brittle and become plastic at higher temperature. The output and transfer characteristics of the devices were characterized by measuring the generation and temporal response of the switching of the photogenerated current. The current–voltage characteristics of both phases exhibit linearity and symmetry about the positive and negative voltages. The crystals transmit light in the telecommunications range with significantly low optical loss for an organic crystalline material.

Original languageEnglish (US)
Pages (from-to)26151-26157
Number of pages7
JournalAngewandte Chemie - International Edition
Issue number50
StatePublished - Dec 6 2021


  • flexible crystals
  • optical waveguides
  • organic phototransistors
  • organic semiconductors

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry


Dive into the research topics of 'Multifunctional Deformable Organic Semiconductor Single Crystals'. Together they form a unique fingerprint.

Cite this