Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3621830
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Powder of carbon nitride has been investigated by surface photovoltage spectroscopy at temperatures between 30 degrees C and 150 degrees C. Photo-generated holes were preferentially separated towards the external surface. Electronic states below the optical band gap from which charge separation may be possible have not been observed. The band gap of the investigated carbon nitride decreased from 2.93 to 2.80 eV with increasing temperature from 30 degrees C to 150 degrees C. The material exhibits a higher optical transition at E = 3.6 eV. Results are discussed from the point of view of photo-catalytic water splitting with carbon nitride. (C) 2011 American Institute of Physics. [doi:10.1063/1.3621830]
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