Facile synthesis of composition-tuned ZnO/Zn(x)Cd(1-x)Se nanowires for photovoltaic applications

ZnO/Zn(x)Cd(1-x)Se coaxial nanowires (NWs) have been successfully synthesized by combining chemical vapor deposition with a facile alternant physical deposition method. The shell composition x can be precisely tuned in the whole region (0 ≤ x ≤ 1) by adjusting growth time ratio of ZnSe to CdSe. As a...

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Autores principales: Luo, Qiang, Wu, Zhiming, He, Jialun, Cao, Yiyan, Bhutto, Waseem Ahmed, Wang, Weiping, Zheng, Xuanli, Li, Shuping, Lin, Shengquan, Kong, Lijing, Kang, Junyong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2015
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4411331/
https://www.ncbi.nlm.nih.gov/pubmed/25977654
http://dx.doi.org/10.1186/s11671-015-0886-3
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author Luo, Qiang
Wu, Zhiming
He, Jialun
Cao, Yiyan
Bhutto, Waseem Ahmed
Wang, Weiping
Zheng, Xuanli
Li, Shuping
Lin, Shengquan
Kong, Lijing
Kang, Junyong
author_facet Luo, Qiang
Wu, Zhiming
He, Jialun
Cao, Yiyan
Bhutto, Waseem Ahmed
Wang, Weiping
Zheng, Xuanli
Li, Shuping
Lin, Shengquan
Kong, Lijing
Kang, Junyong
author_sort Luo, Qiang
collection PubMed
description ZnO/Zn(x)Cd(1-x)Se coaxial nanowires (NWs) have been successfully synthesized by combining chemical vapor deposition with a facile alternant physical deposition method. The shell composition x can be precisely tuned in the whole region (0 ≤ x ≤ 1) by adjusting growth time ratio of ZnSe to CdSe. As a result, the effective bandgaps of coaxial nanowires were conveniently modified from 1.85 eV to 2.58 eV, almost covering the entire visible spectrum. It was also found that annealing treatment was in favor of forming the mixed crystal and improving crystal quality. An optimal temperature of 350°C was obtained according to our experimental results. Additionally, time resolved photo-luminescence spectra revealed the longest carrier lifetime in ZnO/CdSe coaxial nanowires. As a result, the ZnO/CdSe nanowire cell acquired the maximal conversion efficiency of 2.01%. This work shall pave a way towards facile synthesis of ternary alloys for photovoltaic applications.
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spelling pubmed-44113312015-05-14 Facile synthesis of composition-tuned ZnO/Zn(x)Cd(1-x)Se nanowires for photovoltaic applications Luo, Qiang Wu, Zhiming He, Jialun Cao, Yiyan Bhutto, Waseem Ahmed Wang, Weiping Zheng, Xuanli Li, Shuping Lin, Shengquan Kong, Lijing Kang, Junyong Nanoscale Res Lett Nano Express ZnO/Zn(x)Cd(1-x)Se coaxial nanowires (NWs) have been successfully synthesized by combining chemical vapor deposition with a facile alternant physical deposition method. The shell composition x can be precisely tuned in the whole region (0 ≤ x ≤ 1) by adjusting growth time ratio of ZnSe to CdSe. As a result, the effective bandgaps of coaxial nanowires were conveniently modified from 1.85 eV to 2.58 eV, almost covering the entire visible spectrum. It was also found that annealing treatment was in favor of forming the mixed crystal and improving crystal quality. An optimal temperature of 350°C was obtained according to our experimental results. Additionally, time resolved photo-luminescence spectra revealed the longest carrier lifetime in ZnO/CdSe coaxial nanowires. As a result, the ZnO/CdSe nanowire cell acquired the maximal conversion efficiency of 2.01%. This work shall pave a way towards facile synthesis of ternary alloys for photovoltaic applications. Springer US 2015-04-15 /pmc/articles/PMC4411331/ /pubmed/25977654 http://dx.doi.org/10.1186/s11671-015-0886-3 Text en © Luo et al.; licensee Springer. 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
spellingShingle Nano Express
Luo, Qiang
Wu, Zhiming
He, Jialun
Cao, Yiyan
Bhutto, Waseem Ahmed
Wang, Weiping
Zheng, Xuanli
Li, Shuping
Lin, Shengquan
Kong, Lijing
Kang, Junyong
Facile synthesis of composition-tuned ZnO/Zn(x)Cd(1-x)Se nanowires for photovoltaic applications
title Facile synthesis of composition-tuned ZnO/Zn(x)Cd(1-x)Se nanowires for photovoltaic applications
title_full Facile synthesis of composition-tuned ZnO/Zn(x)Cd(1-x)Se nanowires for photovoltaic applications
title_fullStr Facile synthesis of composition-tuned ZnO/Zn(x)Cd(1-x)Se nanowires for photovoltaic applications
title_full_unstemmed Facile synthesis of composition-tuned ZnO/Zn(x)Cd(1-x)Se nanowires for photovoltaic applications
title_short Facile synthesis of composition-tuned ZnO/Zn(x)Cd(1-x)Se nanowires for photovoltaic applications
title_sort facile synthesis of composition-tuned zno/zn(x)cd(1-x)se nanowires for photovoltaic applications
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4411331/
https://www.ncbi.nlm.nih.gov/pubmed/25977654
http://dx.doi.org/10.1186/s11671-015-0886-3
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