Monolithically integrated bacteriorhodopsin/semiconductor opto-electronic integrated circuit for a bio-photoreceiver

J. Xu, P. Bhattacharya, G. Váró

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


The light-sensitive protein, bacteriorhodopsin (BR), is monolithically integrated with an InP-based amplifier circuit to realize a novel opto-electronic integrated circuit (OEIC) which performs as a high-speed photoreceiver. The circuit is realized by epitaxial growth of the field-effect transistors, currently used semiconductor device and circuit fabrication techniques, and selective area BR electro-deposition. The integrated photoreceiver has a responsivity of 175V/W and linear photoresponse, with a dynamic range of 16dB, with 594nm photoexcitation. The dynamics of the photochemical cycle of BR has also been modeled and a proposed equivalent circuit simulates the measured BR photoresponse with good agreement.

Original languageEnglish (US)
Pages (from-to)885-892
Number of pages8
JournalBiosensors and Bioelectronics
Issue number8
StatePublished - Mar 15 2004

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biophysics
  • Biomedical Engineering
  • Electrochemistry


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