Enhanced photocurrent in single-walled carbon nanotubes by exciton interactions | Zendy

Satoru Konabe | Zendy; Susumu Okada | Zendy

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Enhanced photocurrent in single-walled carbon nanotubes by exciton interactions

Author(s) -

Satoru Konabe,

Susumu Okada

Publication year - 2013

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4798274

Subject(s) - photocurrent , exciton , auger effect , carbon nanotube , auger , multiple exciton generation , materials science , chemical physics , recombination , photoconductivity , optoelectronics , nanotechnology , physics , chemistry , atomic physics , condensed matter physics , solar cell , biochemistry , gene

We theoretically investigate the photocurrent generation efficiency of single-walled carbon nanotubes by considering the interplay between exciton many-body effects. We calculate the photocurrent by solving rate equations that incorporate the influences of the two competing processes, multiple exciton generation (MEG) and the Auger recombination (AR) processes. We find that MEG substantially enhances photocurrent generation in spite of the competing AR process. Our calculation shows that the generation efficiency is up to 150% higher than that without MEG

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