| Autor: |
Takeuchi, Akiko, Oishi, Koichiro, Aoyagi, Naritoshi, Nishida, Genki, Shimizu, Wataru, Nakagawa, Masato, Yamazaki, Makoto, Katagiri, Hironori |
| Předmět: |
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| Zdroj: |
Physica Status Solidi (C); Jun2017, Vol. 14 Issue 6, pn/a-N.PAG, 4p |
| Abstrakt: |
Cu2ZnSnS4 bulk polycrystalline were synthesized by pressureless sintering (PLS) method in vacuum and spark plasma sintering (SPS) method. It was confirmed that there were no the secondary phases in a sample sintered by SPS method at 750 °C from the results of powder X-ray diffraction (XRD) patterns and Rietveld refinement. The Raman spectrum of the sample showed the strongest peak at 338 cm−1 with a shoulder at 350-370 cm−1, and the weaker peaks at about 255 and 289 cm−1, which originated from Cu2ZnSnS4. The FWHM of the strongest peak of 7.4 cm−1 was narrower than other samples. The photoluminescence (PL) spectrum measured at 15 K were observed a broad emission band with the maximum at 1.26 eV. Also, the measured photoluminescence excitation (PLE) for the band-edge emission was originated the energy transfer from the band-to-band excitation.The obtained activation energy was 62 ± 9 meV. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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