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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Indium induced band gap tailoring in AgGa(1-x)In(x)S(2) chalcopyrite structure for visible light photocatalysis

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Title
Indium induced band gap tailoring in AgGa(1-x)In(x)S(2) chalcopyrite structure for visible light photocatalysis
Other Titles
Indium induced band gap tailoring in AgGa(1-x)In(x)S(2) chalcopyrite structure for visible light photocatalysis
Author
Jang, Jum SukBorse, Pramod H.Lee, Jae SungChoi, Sun HeeKim, Hyun Gyu
Issue Date
2008-04
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF CHEMICAL PHYSICS, v.128, no.15, pp.845 - 850
Abstract
Indium was substituted at gallium site in chalcopyrite AgGaS(2) structure by using a simple solid solution method. The spectroscopic analysis using extended x-ray absorption fine structure and x-ray photoelectron spectroscopy confirmed the indium substitution in AgGaS(2) lattice. The band gap energy of AgGa(1-x)In(x)S(2) (x=0 - 1) estimated from the onset of absorption edge was found to be reduced from 2.67 eV (x=0 ) to 1.9 eV (x=1 ) by indium substitution. The theoretical and experimental studies showed that the indium s orbitals in AgGa(1-x)In(x)S(2) tailored the band gap energy, thereby modified the photocatalytic activity of the AgGa(1-x)In(x)S(2). (c) 2008 American Institute of Physics
URI
https://scholarworks.unist.ac.kr/handle/201301/12553
URL
http://scitation.aip.org/content/aip/journal/jcp/128/15/10.1063/1.2900984
DOI
10.1063/1.2900984
ISSN
0021-9606
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ECHE_Journal Papers
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