Effects of p- and d-block metal co-substitution on the electronic structure and physicochemical properties of InMO4 (M = Nb and Ta) semiconductors

Seung Tae Lim, Tae Woo Kim, Su Gil Hur, Seong Ju Hwang, Hyunwoong Park, Wonyong Choi, Jin Ho Choy

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We have investigated the effect of the co-substitution of SnIV and NiII ions on the electronic structure and physicochemical property of InMO4 (M = Nb, Ta) semiconductors. The co-substitution leads to a red-shift of absorption edge as well as to an appearance of satellite peak below the absorption edge. Depending on the nature of valence orbitals, the substitution of p- and d-block elements results in the lowering of conduction band and the formation of impurity states in the middle of bandgap, respectively. Such a band modification makes the photocatalytic activity of InMO4 improved against the photodegradation of organic molecules.

Original languageEnglish
Pages (from-to)251-255
Number of pages5
JournalChemical Physics Letters
Volume434
Issue number4-6
DOIs
Publication statusPublished - 2007 Feb 5

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Electronic structure
Substitution reactions
Metals
substitutes
Semiconductor materials
electronic structure
metals
Photodegradation
Conduction bands
red shift
conduction bands
Energy gap
Satellites
Impurities
Ions
valence
orbitals
impurities
Molecules
molecules

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Lim, Seung Tae ; Kim, Tae Woo ; Hur, Su Gil ; Hwang, Seong Ju ; Park, Hyunwoong ; Choi, Wonyong ; Choy, Jin Ho. / Effects of p- and d-block metal co-substitution on the electronic structure and physicochemical properties of InMO4 (M = Nb and Ta) semiconductors. In: Chemical Physics Letters. 2007 ; Vol. 434, No. 4-6. pp. 251-255.
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Effects of p- and d-block metal co-substitution on the electronic structure and physicochemical properties of InMO4 (M = Nb and Ta) semiconductors. / Lim, Seung Tae; Kim, Tae Woo; Hur, Su Gil; Hwang, Seong Ju; Park, Hyunwoong; Choi, Wonyong; Choy, Jin Ho.

In: Chemical Physics Letters, Vol. 434, No. 4-6, 05.02.2007, p. 251-255.

Research output: Contribution to journalArticle

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AU - Lim, Seung Tae

AU - Kim, Tae Woo

AU - Hur, Su Gil

AU - Hwang, Seong Ju

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AU - Choi, Wonyong

AU - Choy, Jin Ho

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AB - We have investigated the effect of the co-substitution of SnIV and NiII ions on the electronic structure and physicochemical property of InMO4 (M = Nb, Ta) semiconductors. The co-substitution leads to a red-shift of absorption edge as well as to an appearance of satellite peak below the absorption edge. Depending on the nature of valence orbitals, the substitution of p- and d-block elements results in the lowering of conduction band and the formation of impurity states in the middle of bandgap, respectively. Such a band modification makes the photocatalytic activity of InMO4 improved against the photodegradation of organic molecules.

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