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- W1968973313 abstract "Polycrystalline samples have been prepared of 12 defect chalcopyrite quaternary compounds of the form I III IV Se 4 , where I is Cu or Ag, III Al, Ga or In, and IV Ge or Sn. In all cases room temperature optical absorption measurements have been made to determine values of the fundamental energy gap (E g ) and all gaps shown to be direct. For the cases of AgGaSnSe 4 and AgGaGeSe 4 , values of E g have been determined as a function of temperature from helium to room and the data fitted to a Manoogian–Leclerc equation. The energy gap values of the quaternary compounds (E gT ) have been compared with those of the corresponding ternary chalcopyrite compounds (E gT ) and a relation between the values of E gQ −E gT and E gT shown." @default.
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- W1968973313 date "1982-08-01" @default.
- W1968973313 modified "2023-10-02" @default.
- W1968973313 title "Energy gap values by optical absorption in I III IV Se4 compounds" @default.
- W1968973313 doi "https://doi.org/10.1139/p82-149" @default.
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