High performance photodiodes based on chemically processed Cu doped SnS                         2                          nanoflakes

G. Mohan Kumar; Fu Xiao; P. Ilanchezhiyan; Sh Yuldashev; A. Madhan Kumar; H. D. Cho; D. J. Lee; T. W. Kang

doi:10.1016/j.apsusc.2018.05.197

High performance photodiodes based on chemically processed Cu doped SnS ₂ nanoflakes

G. Mohan Kumar, Fu Xiao, P. Ilanchezhiyan, Sh Yuldashev, A. Madhan Kumar, H. D. Cho, D. J. Lee, T. W. Kang

Quantum-Functional Semiconductor Research Center

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

37 Scopus citations

Abstract

In this work, Cu doped SnS ₂ nanoflakes were synthesized through a simple hydrothermal method. The influence of Cu doping on the structural, optical and electrical properties of SnS ₂ were investigated in detail. Optical properties explores the Cu doping in SnS ₂ crystal lattice to result with a red-shift in absorption spectrum, which benefits visible-light absorption. Photodiodes were further fabricated by spin coating Cu doped SnS ₂ nanoflakes on p-type silicon (Si). Electrical and photoelectrical parameters of Cu doped SnS ₂ nanoflakes were determined by studying their impedance and current–voltage (I–V) characteristics, respectively. The diodes were found to exhibit excellent rectifying behavior and good sensitivity on par to pristine photodiodes. Impedance results identified the resistance of device to reduce considerably on Cu doping. The enhanced photoelectrical properties of the heterojunctions has been ascribed to Cu ions, which act as effective dopant and contribute to the varied carrier concentration in SnS ₂ . Finally the obtained results suggest the potential of Cu-doped SnS ₂ for application in photodetection and sensors applications.

Original language	English
Pages (from-to)	446-454
Number of pages	9
Journal	Applied Surface Science
Volume	455
DOIs	https://doi.org/10.1016/j.apsusc.2018.05.197
State	Published - 15 Oct 2018

Keywords

Charge transfer process
Cu doped SnS
Impedance spectroscopy
Nanoflakes
Photodiode

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Mohan Kumar, G., Xiao, F., Ilanchezhiyan, P., Yuldashev, S., Madhan Kumar, A., Cho, H. D., Lee, D. J., & Kang, T. W. (2018). High performance photodiodes based on chemically processed Cu doped SnS ₂ nanoflakes Applied Surface Science, 455, 446-454. https://doi.org/10.1016/j.apsusc.2018.05.197

@article{15d95367ee774769a6bb78cf8f0f6e43,

title = " High performance photodiodes based on chemically processed Cu doped SnS 2 nanoflakes ",

abstract = " In this work, Cu doped SnS 2 nanoflakes were synthesized through a simple hydrothermal method. The influence of Cu doping on the structural, optical and electrical properties of SnS 2 were investigated in detail. Optical properties explores the Cu doping in SnS 2 crystal lattice to result with a red-shift in absorption spectrum, which benefits visible-light absorption. Photodiodes were further fabricated by spin coating Cu doped SnS 2 nanoflakes on p-type silicon (Si). Electrical and photoelectrical parameters of Cu doped SnS 2 nanoflakes were determined by studying their impedance and current–voltage (I–V) characteristics, respectively. The diodes were found to exhibit excellent rectifying behavior and good sensitivity on par to pristine photodiodes. Impedance results identified the resistance of device to reduce considerably on Cu doping. The enhanced photoelectrical properties of the heterojunctions has been ascribed to Cu ions, which act as effective dopant and contribute to the varied carrier concentration in SnS 2 . Finally the obtained results suggest the potential of Cu-doped SnS 2 for application in photodetection and sensors applications.",

keywords = "Charge transfer process, Cu doped SnS, Impedance spectroscopy, Nanoflakes, Photodiode",

author = "{Mohan Kumar}, G. and Fu Xiao and P. Ilanchezhiyan and Sh Yuldashev and {Madhan Kumar}, A. and Cho, {H. D.} and Lee, {D. J.} and Kang, {T. W.}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = oct,

day = "15",

doi = "10.1016/j.apsusc.2018.05.197",

language = "English",

volume = "455",

pages = "446--454",

journal = "Applied Surface Science",

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publisher = "Elsevier B.V.",

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Mohan Kumar, G, Xiao, F, Ilanchezhiyan, P, Yuldashev, S, Madhan Kumar, A, Cho, HD, Lee, DJ & Kang, TW 2018, ' High performance photodiodes based on chemically processed Cu doped SnS ₂ nanoflakes ', Applied Surface Science, vol. 455, pp. 446-454. https://doi.org/10.1016/j.apsusc.2018.05.197

TY - JOUR

T1 - High performance photodiodes based on chemically processed Cu doped SnS 2 nanoflakes

AU - Mohan Kumar, G.

AU - Xiao, Fu

AU - Ilanchezhiyan, P.

AU - Yuldashev, Sh

AU - Madhan Kumar, A.

AU - Cho, H. D.

AU - Lee, D. J.

AU - Kang, T. W.

PY - 2018/10/15

Y1 - 2018/10/15

N2 - In this work, Cu doped SnS 2 nanoflakes were synthesized through a simple hydrothermal method. The influence of Cu doping on the structural, optical and electrical properties of SnS 2 were investigated in detail. Optical properties explores the Cu doping in SnS 2 crystal lattice to result with a red-shift in absorption spectrum, which benefits visible-light absorption. Photodiodes were further fabricated by spin coating Cu doped SnS 2 nanoflakes on p-type silicon (Si). Electrical and photoelectrical parameters of Cu doped SnS 2 nanoflakes were determined by studying their impedance and current–voltage (I–V) characteristics, respectively. The diodes were found to exhibit excellent rectifying behavior and good sensitivity on par to pristine photodiodes. Impedance results identified the resistance of device to reduce considerably on Cu doping. The enhanced photoelectrical properties of the heterojunctions has been ascribed to Cu ions, which act as effective dopant and contribute to the varied carrier concentration in SnS 2 . Finally the obtained results suggest the potential of Cu-doped SnS 2 for application in photodetection and sensors applications.

AB - In this work, Cu doped SnS 2 nanoflakes were synthesized through a simple hydrothermal method. The influence of Cu doping on the structural, optical and electrical properties of SnS 2 were investigated in detail. Optical properties explores the Cu doping in SnS 2 crystal lattice to result with a red-shift in absorption spectrum, which benefits visible-light absorption. Photodiodes were further fabricated by spin coating Cu doped SnS 2 nanoflakes on p-type silicon (Si). Electrical and photoelectrical parameters of Cu doped SnS 2 nanoflakes were determined by studying their impedance and current–voltage (I–V) characteristics, respectively. The diodes were found to exhibit excellent rectifying behavior and good sensitivity on par to pristine photodiodes. Impedance results identified the resistance of device to reduce considerably on Cu doping. The enhanced photoelectrical properties of the heterojunctions has been ascribed to Cu ions, which act as effective dopant and contribute to the varied carrier concentration in SnS 2 . Finally the obtained results suggest the potential of Cu-doped SnS 2 for application in photodetection and sensors applications.

KW - Charge transfer process

KW - Cu doped SnS

KW - Impedance spectroscopy

KW - Nanoflakes

KW - Photodiode

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DO - 10.1016/j.apsusc.2018.05.197

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SN - 0169-4332

VL - 455

SP - 446

EP - 454

JO - Applied Surface Science

JF - Applied Surface Science

ER -

High performance photodiodes based on chemically processed Cu doped SnS ₂ nanoflakes

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