کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1282264 1497551 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ternary AgInSe2 film electrode created using selenization of RF magnetron sputtered Ag–In metal precursor for photoelectrochemical applications
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Ternary AgInSe2 film electrode created using selenization of RF magnetron sputtered Ag–In metal precursor for photoelectrochemical applications
چکیده انگلیسی

AgInSe2 ternary semiconductor thin films are deposited on glass substrates and indium-doped-tin-oxide (ITO)-coated glass substrates using the selenization of magnetron sputtered Ag–In metal precursors. X-ray diffraction (XRD) and energy-dispersive analysis of X-ray (EDAX) results show that the crystal phase of samples changed from AgInSe2 to a solid mixture of AgInSe2 and Ag2Se with a decrease in the [In]/[In + Ag] molar ratio in samples. The direct and indirect energy band gaps of the samples vary in the ranges of 1.27–1.45 eV and 0.91–1.17 eV, respectively, depending on the [In]/[In + Ag] molar ratio in samples. The flat-band potentials of samples are in the range of −0.47 to −0.71 V (vs. normal hydrogen electrode) in a solution containing Na2S (0.35 M) + K2SO3 (0.25 M) obtained using Mott–Schottky measurements. The maximum photocurrent density of the samples on ITO-coated glass substrates is 31.7 mA/cm2 at an external potential of +1.0 V (vs. Ag/AgCl) in the solution containing Na2S (0.35 M) + K2SO3 (0.25 M) ions.


► AgInSe2 is deposited on substrates using selenization of Ag–In precursors.
► The direct energy band gaps of the samples were in the range of 1.27–1.45 eV.
► Sample with [In]/[Ag + In] ratio of 0.49 has a maximum PEC response.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 18, September 2012, Pages 13638–13644
نویسندگان
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