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Heavy lithium-doped ZnO thin films prepared by spray pyrolysis method
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ardyanian, Mahdi Sedigh, N. |
| Copyright Year | 2014 |
| Abstract | Lithium-doped ZnO thin films (ZnO : Lix) were prepared by spray pyrolysis method on the glass substrates for x (x = [Li]/[Zn]) value varied between 5 and 70%. Structural, electrical and optical properties of the samples were studied by X-ray diffraction (XRD), UV-Vis-NIR spectroscopy, scanning electron microscopy (SEM), Hall effect and sheet resistance measurements. XRD results show that for x ≤ 50%, the structure of the films tends to be polycrystals of wurtzite structure with preferred direction along (0 0 2). The best crystalline order is found at x = 20% and the crystal structure is stable until x = 60%. The Hall effect results describe that Li doping leads to change in the conduction type from n- to p-type, again it changes to n-type at x = 70% and is attributed to self-compensation effect. Moreover, the carrier density was calculated in the order of 1013 cm−3. The resistivity of Li-doped films decreases until 22 Ω cm at x = 50%. Optical bandgap was reduced slightly, from 3.27 to 3.24 eV as a function of the grain size. Optical transmittance in the visible range reaches T = 97%, by increasing of Li content until x = 20%. Electrical and optical properties are coherent with structural results. |
| Starting Page | 1309 |
| Ending Page | 1314 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s12034-014-0076-4 |
| Volume Number | 37 |
| Alternate Webpage(s) | https://www.ias.ac.in/article/fulltext/boms/037/06/1309-1314 |
| Alternate Webpage(s) | https://doi.org/10.1007/s12034-014-0076-4 |
| Journal | Bulletin of Materials Science |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
