Two-dimensional CdS intercalated ZnO nanorods: A concise study on interfacial band structure modification

Hind Fadhil Oleiwi, Sin Tee Tan, Hock Beng Lee, Chi Chin Yap, Riski Titian Ginting, Azmi Zakaria, Abdelelah Alshanableh, Chun Hui Tan, Mohammad Hafizuddin Jumali, Muhammad Yahaya, Zainal Abidin Talib

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The controllable growth of metal sulfide-metal oxide based nanomaterials with a tunable band gap structure is vital in the fabrication of new generation optoelectronic devices. In this paper, two-dimensional hierarchical CdS/ZnO nanorod arrays were successfully grown via a low temperature hydrothermal-SILAR method. A concise mechanism related to the surface and band gap modification on the CdS/ZnO nanorods was investigated under various CdS deposition cycles (N). The diameter and surface roughness properties of the sample were found to be linearly dependent on the value of N. A bathochromic shift in the optical energy band gap revealed the quantum size effects of the CdS/ZnO nanorods, as well as the induced interface band state and energy band split in the ZnO band state. An impressive improvement in the crystallinity of the sample was also observed under the CdS treatment. The correlation between the optical band gap and photovoltaic efficiency was evaluated. The results proved that the ZnO nanorod/CdS devices exhibited a threefold higher power conversion efficiency in comparison to a pristine ZnO nanorod device.

Original languageEnglish
Pages (from-to)52395-52402
Number of pages8
JournalRSC Advances
Volume6
Issue number57
DOIs
Publication statusPublished - 2016

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Nanorods
Band structure
Energy gap
Metals
Optical band gaps
Sulfides
Nanostructured materials
Optoelectronic devices
Oxides
Conversion efficiency
Surface roughness
Fabrication
Temperature

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Oleiwi, H. F., Tan, S. T., Lee, H. B., Yap, C. C., Ginting, R. T., Zakaria, A., ... Talib, Z. A. (2016). Two-dimensional CdS intercalated ZnO nanorods: A concise study on interfacial band structure modification. RSC Advances, 6(57), 52395-52402. https://doi.org/10.1039/c6ra09984j

Two-dimensional CdS intercalated ZnO nanorods : A concise study on interfacial band structure modification. / Oleiwi, Hind Fadhil; Tan, Sin Tee; Lee, Hock Beng; Yap, Chi Chin; Ginting, Riski Titian; Zakaria, Azmi; Alshanableh, Abdelelah; Tan, Chun Hui; Jumali, Mohammad Hafizuddin; Yahaya, Muhammad; Talib, Zainal Abidin.

In: RSC Advances, Vol. 6, No. 57, 2016, p. 52395-52402.

Research output: Contribution to journalArticle

Oleiwi, HF, Tan, ST, Lee, HB, Yap, CC, Ginting, RT, Zakaria, A, Alshanableh, A, Tan, CH, Jumali, MH, Yahaya, M & Talib, ZA 2016, 'Two-dimensional CdS intercalated ZnO nanorods: A concise study on interfacial band structure modification', RSC Advances, vol. 6, no. 57, pp. 52395-52402. https://doi.org/10.1039/c6ra09984j
Oleiwi, Hind Fadhil ; Tan, Sin Tee ; Lee, Hock Beng ; Yap, Chi Chin ; Ginting, Riski Titian ; Zakaria, Azmi ; Alshanableh, Abdelelah ; Tan, Chun Hui ; Jumali, Mohammad Hafizuddin ; Yahaya, Muhammad ; Talib, Zainal Abidin. / Two-dimensional CdS intercalated ZnO nanorods : A concise study on interfacial band structure modification. In: RSC Advances. 2016 ; Vol. 6, No. 57. pp. 52395-52402.
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