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Optical properties of bismuth oxide thin films prepared by reactive magnetron sputtering
| Content Provider | Semantic Scholar |
|---|---|
| Author | Leontie, Liviu Cuza, Ioan |
| Copyright Year | 2006 |
| Abstract | The optical properties, absorption in the domain 2.50-4.30 eV and the optical functions, n, k, e 1 , and e 2 , in the range 1.24-6.50 eV, for bismuth oxide films prepared by reactive magnetron sputtering, onto glass and amorphous quartz, at room temperature, have been investigated. Sputtered films (d=0.05-1.80 μm) are preponderantly amorphous, also containing Bi 2 O 3 nanocrystallites, in incipient phase. From optical absorption date the optical band gaps of investigated sputtered films have been determined: Eg a =2.68-2.73 eV (amorphous phase) and Ego=3.55 eV (optical direct gap). By studying the dispersion of optical functions, a series of particularities at 3.60 eV, 4.30 eV, 4.80 eV, 5.55 eV, and 6.20 eV are evidenced for sputtered films; they correspond to direct band-to-band transitions in the nanocrystalline Bi 2 O 3 . |
| Starting Page | 1221 |
| Ending Page | 1224 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| Volume Number | 8 |
| Alternate Webpage(s) | https://joam.inoe.ro/arhiva/pdf8_3/3Leontie.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
