Role of chlorine in In2S3 for band alignment at nanoporous-TiO2/In2S3 interfaces

Albert Owino Juma, Anahita Azarpira, Alexander Steigert, Manuel Pomaska, Christian Herbert Fischer, Iver Lauermann, Thomas Dittrich

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Coatings of Cl-free and Cl-containing In2S3 (In 2S3:Cl) layers were prepared by spray ion layer gas reaction on nanoporous TiO2 (np-TiO2). Charge separation in FTO/np-TiO2/In2S3:Cl, FTO/In 2S3:Cl, FTO/np-TiO2/In2S 3:acac, and FTO/In2S3:acac systems has been investigated by modulated surface photovoltage spectroscopy (SPV). The exponential defect tails below the band gap of In2S3 were reduced for In2S3:Cl. The analysis of the SPV spectra allowed to distinguish different mechanisms of charge separation and to deduce the conduction band offsets (about 0.3 eV and 0.05 eV for np-TiO 2/In2S3:Cl and np-TiO2/In 2S3:acac, respectively) in correlation with photoelectron measurements.

Original languageEnglish
Article number053711
JournalJournal of Applied Physics
Volume114
Issue number5
DOIs
Publication statusPublished - Aug 7 2013

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photovoltages
polarization (charge separation)
chlorine
alignment
spectroscopy
sprayers
conduction bands
photoelectrons
coatings
defects
gases
ions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Owino Juma, A., Azarpira, A., Steigert, A., Pomaska, M., Fischer, C. H., Lauermann, I., & Dittrich, T. (2013). Role of chlorine in In2S3 for band alignment at nanoporous-TiO2/In2S3 interfaces. Journal of Applied Physics, 114(5), [053711]. https://doi.org/10.1063/1.4817766
Owino Juma, Albert ; Azarpira, Anahita ; Steigert, Alexander ; Pomaska, Manuel ; Fischer, Christian Herbert ; Lauermann, Iver ; Dittrich, Thomas. / Role of chlorine in In2S3 for band alignment at nanoporous-TiO2/In2S3 interfaces. In: Journal of Applied Physics. 2013 ; Vol. 114, No. 5.
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abstract = "Coatings of Cl-free and Cl-containing In2S3 (In 2S3:Cl) layers were prepared by spray ion layer gas reaction on nanoporous TiO2 (np-TiO2). Charge separation in FTO/np-TiO2/In2S3:Cl, FTO/In 2S3:Cl, FTO/np-TiO2/In2S 3:acac, and FTO/In2S3:acac systems has been investigated by modulated surface photovoltage spectroscopy (SPV). The exponential defect tails below the band gap of In2S3 were reduced for In2S3:Cl. The analysis of the SPV spectra allowed to distinguish different mechanisms of charge separation and to deduce the conduction band offsets (about 0.3 eV and 0.05 eV for np-TiO 2/In2S3:Cl and np-TiO2/In 2S3:acac, respectively) in correlation with photoelectron measurements.",
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Owino Juma, A, Azarpira, A, Steigert, A, Pomaska, M, Fischer, CH, Lauermann, I & Dittrich, T 2013, 'Role of chlorine in In2S3 for band alignment at nanoporous-TiO2/In2S3 interfaces', Journal of Applied Physics, vol. 114, no. 5, 053711. https://doi.org/10.1063/1.4817766

Role of chlorine in In2S3 for band alignment at nanoporous-TiO2/In2S3 interfaces. / Owino Juma, Albert; Azarpira, Anahita; Steigert, Alexander; Pomaska, Manuel; Fischer, Christian Herbert; Lauermann, Iver; Dittrich, Thomas.

In: Journal of Applied Physics, Vol. 114, No. 5, 053711, 07.08.2013.

Research output: Contribution to journalArticle

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AU - Owino Juma, Albert

AU - Azarpira, Anahita

AU - Steigert, Alexander

AU - Pomaska, Manuel

AU - Fischer, Christian Herbert

AU - Lauermann, Iver

AU - Dittrich, Thomas

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