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primary topic: An Electronic and Optically Controlled Bifunctional Transistor Based on a Bio−Nano Hybrid Complex

An Electronic and Optically Controlled Bifunctional Transistor Based on a Bio−Nano Hybrid Complex
type: AcademicArticle
type: Article
abstract: We report an electronically and optically controlled bioelectronic field-effect transistor (FET) based on the hybrid film of photoactive bacteriorhodopsin and electronically conducting single-walled carbon nanotubes (SWNTs). Two-dimensional (2D) crystals of bacteriorhodopsin form the photoactive center of the bio–nano complex, whereas one-dimensional (1D) pure SWNTs provide the required electronic support. The redshift in the Raman spectra indicates the electronic doping with an estimated charge density of 3 × 106 cm–2. The hybrid structure shows a conductivity of 19 μS/m and semiconducting characteristics due to preferential binding with selective diameters of semiconducting SWNTs. The bioelectronic transistor fabricated using direct laser lithography shows both optical and electronic gating with a significant on/off switch ratio of 8.5 and a photoconductivity of 13.15 μS/m. An n-type FET shows complementary p-type characteristics under light due to optically controlled, electronic doping by the “proton-pumping” bacteriorhodopsin. The fabricated bioelectronic transistor exhibits both electronically and optically well-controlled bifunctionality based on the functionalized hybrid electronic material.
date: 2020-04-20
volume: 5
issue: 17
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository
subject: QR Microbiology

American Chemical Society
type: Organization

ACS Omega
type: Collection

E.Senthil Prasad
type: Person
given name: E.Senthil
family name: Prasad

Harsh Chaturvedi
type: Person
given name: Harsh
family name: Chaturvedi

Vikram Bakaraju
type: Person
given name: Vikram
family name: Bakaraju

Brijesh Meena
type: Person
given name: Brijesh
family name: Meena

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primary topic: An Electronic and Optically Controlled Bifunctional Transistor Based on a Bio−Nano Hybrid Complex

QR Microbiology
type: Concept