Bi-Assisted CdTe/CdS Hierarchical Nanostructure Growth for Photoconductive Applications

Kwang Heo; Hyungwoo Lee; Jikang Jian; Dong Jin Lee; Yongju Park; Changhee Lee; Byung Yang Lee; Seunghun Hong

doi:10.1186/s11671-015-1037-6

Bi-Assisted CdTe/CdS Hierarchical Nanostructure Growth for Photoconductive Applications

Kwang Heo, Hyungwoo Lee, Jikang Jian, Dong Jin Lee, Yongju Park, Changhee Lee, Byung Yang Lee, Seunghun Hong

School of Mechanical Engineering

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

8 Citations (Scopus)

Abstract

We developed a method to control the structure of CdTe nanowires by adopting Bi-mixed CdTe powder source to a catalyst-assisted chemical vapor deposition, which allowed us to fabricate CdTe/CdS hierarchical nanostructures. We demonstrated that diverse nanostructures can be grown depending on the combination of the Bi powder and film catalysts. As a proof of concepts, we grew CdTe/CdS branched nanowires for the fabrication of photodetectors. The hierarchical nanostructure-based photodetectors showed an improved photoresponsivity compared to the single CdTe nanowire (NW)-based photodetector. Our strategy can be a simple but powerful method for the development of advanced optoelectronic devices and other practical applications.

Original language	English
Article number	331
Pages (from-to)	1-7
Number of pages	7
Journal	Nanoscale Research Letters
Volume	10
Issue number	1
DOIs	https://doi.org/10.1186/s11671-015-1037-6
Publication status	Published - 2015 Dec 1

Keywords

Chemical vapor deposition
Hierarchical structures
Nanowires
Photodetector

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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10.1186/s11671-015-1037-6

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title = "Bi-Assisted CdTe/CdS Hierarchical Nanostructure Growth for Photoconductive Applications",

abstract = "We developed a method to control the structure of CdTe nanowires by adopting Bi-mixed CdTe powder source to a catalyst-assisted chemical vapor deposition, which allowed us to fabricate CdTe/CdS hierarchical nanostructures. We demonstrated that diverse nanostructures can be grown depending on the combination of the Bi powder and film catalysts. As a proof of concepts, we grew CdTe/CdS branched nanowires for the fabrication of photodetectors. The hierarchical nanostructure-based photodetectors showed an improved photoresponsivity compared to the single CdTe nanowire (NW)-based photodetector. Our strategy can be a simple but powerful method for the development of advanced optoelectronic devices and other practical applications.",

keywords = "Chemical vapor deposition, Hierarchical structures, Nanowires, Photodetector",

author = "Kwang Heo and Hyungwoo Lee and Jikang Jian and Lee, {Dong Jin} and Yongju Park and Changhee Lee and Lee, {Byung Yang} and Seunghun Hong",

note = "Funding Information: This work was supported by the Ministry of Science, ICT & Future Planning (2014M3A7B4051591). SH acknowledges the financial support from the NRF (2013M3C8A3078813, H-GUARD 2013M3A6B2078961). BYL acknowledges the financial support from the National Research Foundation (NRF) funded by the Korea Ministry of Science, ICT & Future Planning (Grant No. 2015R1A2A2A04002733, 2013R1A1A1010802). JJ acknowledges the support by the Natural Science Foundation for Distinguished Young Scholars of Xinjiang (Grant No. 2013711007) and NSFC (Grant No. 51472052). CL acknowledges the support by the Human Resources Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Ministry of Trade, Industry and Energy (No. 20124010203170). Publisher Copyright: {\textcopyright} 2015, Heo et al.",

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doi = "10.1186/s11671-015-1037-6",

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AU - Heo, Kwang

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AU - Jian, Jikang

AU - Lee, Dong Jin

AU - Park, Yongju

AU - Lee, Changhee

AU - Lee, Byung Yang

AU - Hong, Seunghun

N1 - Funding Information: This work was supported by the Ministry of Science, ICT & Future Planning (2014M3A7B4051591). SH acknowledges the financial support from the NRF (2013M3C8A3078813, H-GUARD 2013M3A6B2078961). BYL acknowledges the financial support from the National Research Foundation (NRF) funded by the Korea Ministry of Science, ICT & Future Planning (Grant No. 2015R1A2A2A04002733, 2013R1A1A1010802). JJ acknowledges the support by the Natural Science Foundation for Distinguished Young Scholars of Xinjiang (Grant No. 2013711007) and NSFC (Grant No. 51472052). CL acknowledges the support by the Human Resources Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Ministry of Trade, Industry and Energy (No. 20124010203170). Publisher Copyright: © 2015, Heo et al.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - We developed a method to control the structure of CdTe nanowires by adopting Bi-mixed CdTe powder source to a catalyst-assisted chemical vapor deposition, which allowed us to fabricate CdTe/CdS hierarchical nanostructures. We demonstrated that diverse nanostructures can be grown depending on the combination of the Bi powder and film catalysts. As a proof of concepts, we grew CdTe/CdS branched nanowires for the fabrication of photodetectors. The hierarchical nanostructure-based photodetectors showed an improved photoresponsivity compared to the single CdTe nanowire (NW)-based photodetector. Our strategy can be a simple but powerful method for the development of advanced optoelectronic devices and other practical applications.

AB - We developed a method to control the structure of CdTe nanowires by adopting Bi-mixed CdTe powder source to a catalyst-assisted chemical vapor deposition, which allowed us to fabricate CdTe/CdS hierarchical nanostructures. We demonstrated that diverse nanostructures can be grown depending on the combination of the Bi powder and film catalysts. As a proof of concepts, we grew CdTe/CdS branched nanowires for the fabrication of photodetectors. The hierarchical nanostructure-based photodetectors showed an improved photoresponsivity compared to the single CdTe nanowire (NW)-based photodetector. Our strategy can be a simple but powerful method for the development of advanced optoelectronic devices and other practical applications.

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Bi-Assisted CdTe/CdS Hierarchical Nanostructure Growth for Photoconductive Applications

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Keywords

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