Broad spectral photocurrent enhancement in Au-decorated CdSe nanowires

Ritun Chakraborty; Fanny Greullet; Chandramohan George; Dmitry Baranov; Enzo Di Fabrizio; Roman Krahne

doi:10.1039/c3nr00752a

Broad spectral photocurrent enhancement in Au-decorated CdSe nanowires

Ritun Chakraborty, Fanny Greullet, Chandramohan George, Dmitry Baranov, Enzo Di Fabrizio, Roman Krahne

Research output: Contribution to journal › Article › peer-review

Abstract

Metal-semiconductor hybrid nanostructures promise improved photoconductive performance due to plasmonic properties of the metal portions and intrinsic electric fields at the metal-semiconductor interface that possibly enhance charge separation. Here we report gold decorated CdSe nanowires as a novel functional material and investigate the influence of gold decoration on the lateral facets on the photoconductive properties. Gold decorated nanowires show typically an at least ten-fold higher photocurrent as compared to their bare counterparts. Interestingly, the photocurrent enhancement is wavelength independent, although the plasmon resonance related to the gold particles appears in the absorption spectra. Our experiments show that light scattering and Schottky fields associated with the metal-semiconductor interface are at the origin of the photocurrent enhancement.

Original language	English
Pages (from-to)	5334-5340
Number of pages	7
Journal	Nanoscale
Volume	5
Issue number	12
DOIs	https://doi.org/10.1039/c3nr00752a
Publication status	Published - 2013 Jun 21
Externally published	Yes

Access to Document

10.1039/c3nr00752a

Cite this

@article{9fc692936cee4c6bb23c9a8d5eb913f3,

title = "Broad spectral photocurrent enhancement in Au-decorated CdSe nanowires",

abstract = "Metal-semiconductor hybrid nanostructures promise improved photoconductive performance due to plasmonic properties of the metal portions and intrinsic electric fields at the metal-semiconductor interface that possibly enhance charge separation. Here we report gold decorated CdSe nanowires as a novel functional material and investigate the influence of gold decoration on the lateral facets on the photoconductive properties. Gold decorated nanowires show typically an at least ten-fold higher photocurrent as compared to their bare counterparts. Interestingly, the photocurrent enhancement is wavelength independent, although the plasmon resonance related to the gold particles appears in the absorption spectra. Our experiments show that light scattering and Schottky fields associated with the metal-semiconductor interface are at the origin of the photocurrent enhancement.",

author = "Ritun Chakraborty and Fanny Greullet and Chandramohan George and Dmitry Baranov and \{Di Fabrizio\}, Enzo and Roman Krahne",

year = "2013",

month = jun,

day = "21",

doi = "10.1039/c3nr00752a",

language = "English",

volume = "5",

pages = "5334--5340",

journal = "Nanoscale",

issn = "2040-3364",

publisher = "Royal Society of Chemistry",

number = "12",

}

TY - JOUR

T1 - Broad spectral photocurrent enhancement in Au-decorated CdSe nanowires

AU - Chakraborty, Ritun

AU - Greullet, Fanny

AU - George, Chandramohan

AU - Baranov, Dmitry

AU - Di Fabrizio, Enzo

AU - Krahne, Roman

PY - 2013/6/21

Y1 - 2013/6/21

N2 - Metal-semiconductor hybrid nanostructures promise improved photoconductive performance due to plasmonic properties of the metal portions and intrinsic electric fields at the metal-semiconductor interface that possibly enhance charge separation. Here we report gold decorated CdSe nanowires as a novel functional material and investigate the influence of gold decoration on the lateral facets on the photoconductive properties. Gold decorated nanowires show typically an at least ten-fold higher photocurrent as compared to their bare counterparts. Interestingly, the photocurrent enhancement is wavelength independent, although the plasmon resonance related to the gold particles appears in the absorption spectra. Our experiments show that light scattering and Schottky fields associated with the metal-semiconductor interface are at the origin of the photocurrent enhancement.

AB - Metal-semiconductor hybrid nanostructures promise improved photoconductive performance due to plasmonic properties of the metal portions and intrinsic electric fields at the metal-semiconductor interface that possibly enhance charge separation. Here we report gold decorated CdSe nanowires as a novel functional material and investigate the influence of gold decoration on the lateral facets on the photoconductive properties. Gold decorated nanowires show typically an at least ten-fold higher photocurrent as compared to their bare counterparts. Interestingly, the photocurrent enhancement is wavelength independent, although the plasmon resonance related to the gold particles appears in the absorption spectra. Our experiments show that light scattering and Schottky fields associated with the metal-semiconductor interface are at the origin of the photocurrent enhancement.

UR - https://www.scopus.com/pages/publications/84878745861

U2 - 10.1039/c3nr00752a

DO - 10.1039/c3nr00752a

M3 - Article

AN - SCOPUS:84878745861

SN - 2040-3364

VL - 5

SP - 5334

EP - 5340

JO - Nanoscale

JF - Nanoscale

IS - 12

ER -

Broad spectral photocurrent enhancement in Au-decorated CdSe nanowires

Abstract

Access to Document

Other files and links

Fingerprint

Cite this