| 학회 |
한국재료학회 |
| 학술대회 |
2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 |
27권 2호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
Structural and optical properties of bixbyite manganese oxide as a function of Polyvinylpyrrolidone |
| 초록 |
The emergence of manganese oxide as a prominent storage material has attracted immense research interest in the scientific community. The enhancement of various properties of the materials used for practical applications is one of the main goals of today’s research. Therefore, for the present work, bixbyite manganese oxide (Mn2O3) has been prepared using simple and economic co-precipitation technique with various concentrations polyvinylpyrrolidone (PVP). The structural and optical properties were investigated through different characterization techniques viz. X-ray diffraction (XRD), Raman spectroscopy and UV-vis absorption spectroscopy. The effect of PVP has been observed very clearly on the structural and optical properties of the material. The investigation of XRD spectra revealed the formation of bixbyite Mn2O3 nanoparticles having cubic symmetry with space group Ia3. The crystallite size and lattice parameter were found to vary with the varying amount of PVP. The Raman spectra displayed the main characteristic band corresponding to the bixbyite Mn2O3 showing vibrational modifications in Mn-O bands. The UV-vis absorption spectra revealed the maximum absorption above 500 nm which indicated towards a lower band gap. The energy band gap was obtained from the absorption spectra using Tauc’s equation. The values of the band gap were found to vary significantly with the changing PVP amount. Thus, it was observed that the addition of PVP during the synthesis of manganese oxide in appropriate amount can modify the structure and optical properties of the material. |
| 저자 |
Kavita Kumari1, Akshay Kumar2, MinJi Shin3, Seok Hwan Huh4, Bon Heun Koo5
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| 소속 |
1Industrial Technology Research Institute, 2Changwon National Univ., 3Changwon, 4Gyeongnam, 551140 |
| 키워드 |
bixbyite manganese oxide; Structural; optical properties; Polyvinylpyrrolidone
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| E-Mail |
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