Stationary current generated from photocycle of a hybrid bacteriorhodopsin/quantum dot bionanosystem

Rui Li, Chang Ming Li, Haifeng Bao, Qiaoliang Bao, Vee S. Lee

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Abstract

Bacteriorhodopsin (bR) is a promising biomaterial for broad potential applications in optical and optoelectronic devices. Upon the original photochemical cycle of bR, for the first time we construct a hybrid bR/quantum dot (QD) bionanosystem and a stationary current is generated from the modified photocycle. We propose a model to explain that QDs could act as nanoscaled light sources embedded in bR to assist its generation of a stationary photocurrent, which is completely different from the reported transient spikes from the bR's photocycle. It opens the horizon for optical devices other than those reported up to date.

Original languageEnglish
Article number223901
JournalApplied Physics Letters
Volume91
Issue number22
DOIs
Publication statusPublished - 6 Dec 2007

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