Optimal synthesis of antimony-doped cuprous oxides for photoelectrochemical applications

Young Dae Yun; Seung Ki Baek; Joo Sung Kim; Young Been Kim; Sung Hyeon Jung; Yunseok Kim; Hyung Koun Cho

doi:10.1016/j.tsf.2018.12.037

Optimal synthesis of antimony-doped cuprous oxides for photoelectrochemical applications

Young Dae Yun, Seung Ki Baek, Joo Sung Kim, Young Been Kim, Sung Hyeon Jung, Yunseok Kim, Hyung Koun Cho

Department of Advanced Materials Science and Engineering

Sungkyunkwan University

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

7 Scopus citations

Abstract

We investigated the influence of Sb dopant concentration on the structural, electrical, and photoelectrochemical properties of the photocathode cuprous oxide (Cu₂O) thin films. The photoabsorber p-type Cu₂O films were prepared by electrodeposition in ionic electrolytes including copper sulfate and antimony sulfate at 333 K and pH = 10. The small amount of Sb doping contributes to the fast Cu ion transport to the substrate and ion consumption; consequently, the p-type Cu₂O with high crystalline quality can be reproducibly synthesized with high electrical stability. Among the various samples, the mole fraction of c(Sb)/[c(Cu) + c(Sb)] = 0.75 mol% exhibits the best electrical resistivity and improved transparency in the infrared region, which is involved with the fast overlap of the nuclei crystals under 5 nm from the high nuclei density. Additionally, the post-thermal annealed Sb-doped Cu₂O sample reveals an enhanced photocurrent of ~0.65 mA/cm² vs. RHE (reversible hydrogen electrode) without metal catalysts.

Original language	English
Pages (from-to)	120-126
Number of pages	7
Journal	Thin Solid Films
Volume	671
DOIs	https://doi.org/10.1016/j.tsf.2018.12.037
State	Published - 1 Feb 2019

Keywords

Antimony doping
Cuprous oxide
Photoelectrochemical cell
Post annealing
Preferred orientation

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10.1016/j.tsf.2018.12.037

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@article{46b38def80aa4299b11c8f27acaa92c8,

title = "Optimal synthesis of antimony-doped cuprous oxides for photoelectrochemical applications",

abstract = "We investigated the influence of Sb dopant concentration on the structural, electrical, and photoelectrochemical properties of the photocathode cuprous oxide (Cu2O) thin films. The photoabsorber p-type Cu2O films were prepared by electrodeposition in ionic electrolytes including copper sulfate and antimony sulfate at 333 K and pH = 10. The small amount of Sb doping contributes to the fast Cu ion transport to the substrate and ion consumption; consequently, the p-type Cu2O with high crystalline quality can be reproducibly synthesized with high electrical stability. Among the various samples, the mole fraction of c(Sb)/[c(Cu) + c(Sb)] = 0.75 mol\% exhibits the best electrical resistivity and improved transparency in the infrared region, which is involved with the fast overlap of the nuclei crystals under 5 nm from the high nuclei density. Additionally, the post-thermal annealed Sb-doped Cu2O sample reveals an enhanced photocurrent of \textasciitilde{}0.65 mA/cm2 vs. RHE (reversible hydrogen electrode) without metal catalysts.",

keywords = "Antimony doping, Cuprous oxide, Photoelectrochemical cell, Post annealing, Preferred orientation",

author = "Yun, \{Young Dae\} and Baek, \{Seung Ki\} and Kim, \{Joo Sung\} and Kim, \{Young Been\} and Jung, \{Sung Hyeon\} and Yunseok Kim and Cho, \{Hyung Koun\}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2019",

month = feb,

day = "1",

doi = "10.1016/j.tsf.2018.12.037",

language = "English",

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TY - JOUR

T1 - Optimal synthesis of antimony-doped cuprous oxides for photoelectrochemical applications

AU - Yun, Young Dae

AU - Baek, Seung Ki

AU - Kim, Joo Sung

AU - Kim, Young Been

AU - Jung, Sung Hyeon

AU - Kim, Yunseok

AU - Cho, Hyung Koun

PY - 2019/2/1

Y1 - 2019/2/1

N2 - We investigated the influence of Sb dopant concentration on the structural, electrical, and photoelectrochemical properties of the photocathode cuprous oxide (Cu2O) thin films. The photoabsorber p-type Cu2O films were prepared by electrodeposition in ionic electrolytes including copper sulfate and antimony sulfate at 333 K and pH = 10. The small amount of Sb doping contributes to the fast Cu ion transport to the substrate and ion consumption; consequently, the p-type Cu2O with high crystalline quality can be reproducibly synthesized with high electrical stability. Among the various samples, the mole fraction of c(Sb)/[c(Cu) + c(Sb)] = 0.75 mol% exhibits the best electrical resistivity and improved transparency in the infrared region, which is involved with the fast overlap of the nuclei crystals under 5 nm from the high nuclei density. Additionally, the post-thermal annealed Sb-doped Cu2O sample reveals an enhanced photocurrent of ~0.65 mA/cm2 vs. RHE (reversible hydrogen electrode) without metal catalysts.

AB - We investigated the influence of Sb dopant concentration on the structural, electrical, and photoelectrochemical properties of the photocathode cuprous oxide (Cu2O) thin films. The photoabsorber p-type Cu2O films were prepared by electrodeposition in ionic electrolytes including copper sulfate and antimony sulfate at 333 K and pH = 10. The small amount of Sb doping contributes to the fast Cu ion transport to the substrate and ion consumption; consequently, the p-type Cu2O with high crystalline quality can be reproducibly synthesized with high electrical stability. Among the various samples, the mole fraction of c(Sb)/[c(Cu) + c(Sb)] = 0.75 mol% exhibits the best electrical resistivity and improved transparency in the infrared region, which is involved with the fast overlap of the nuclei crystals under 5 nm from the high nuclei density. Additionally, the post-thermal annealed Sb-doped Cu2O sample reveals an enhanced photocurrent of ~0.65 mA/cm2 vs. RHE (reversible hydrogen electrode) without metal catalysts.

KW - Antimony doping

KW - Cuprous oxide

KW - Photoelectrochemical cell

KW - Post annealing

KW - Preferred orientation

UR - https://www.scopus.com/pages/publications/85059139506

U2 - 10.1016/j.tsf.2018.12.037

DO - 10.1016/j.tsf.2018.12.037

M3 - Article

AN - SCOPUS:85059139506

SN - 0040-6090

VL - 671

SP - 120

EP - 126

JO - Thin Solid Films

JF - Thin Solid Films

ER -

Optimal synthesis of antimony-doped cuprous oxides for photoelectrochemical applications

Abstract

Keywords

UN SDGs

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