Thickness effect on the evolution of morphology and optical properties of ZnO films

Thickness dependence of structural, optical and luminescence properties of BaTiO3 thin films prepared by RF magnetron sputtering

“…The relative density (d) is also a parameter which can reflect the degree of crystallization of Table 3, it can be pointed out that, both the refractive index and the relative density were improved with the increase of film thickness, indicating the crystalline quality of BT thin films [33]. The refractive index (k = 550 nm) values increases with increase in BT film thickness.…”

High optical quality ZnO films grown on graphite substrate for transferable optoelectronics devices by ultrasonic spray pyrolysis

“…3(d). The theory for the changes in ZnO grains shape with deposition time has been discussed and explained by the transformation of growth model [16]. The same mechanism should be true for our case.…”

Growth of uniform ZnO nanoparticles by a microwave plasma process

“…PL has proved useful for investigating the defects that are present in ZnO [8][9][10][11][12]21,28,36,37]. In the present study, a HeCd laser (325 nm) was used as an excitation source and carriers were excited to emit PL spectra.…”

“…It has been shown that the optical and electrical properties of ZnO can be tuned by varying growth conditions, introducing dopants, and/or reducing the grain dimensions [7]. These properties can be further manipulated by forming thin films and nanostructures [6][7][8][9][10][11][12]. Well separated nanorods of ZnO have been grown and tested for gas sensing due to the increased surface to volume ratio [3].…”

“…In this case, a good control over the size distribution of ZnO nanoparticles is vitally important. Until now, synthesis of ZnO nanoparticles has been accomplished by thermal decomposition [21,22], coprecipitation [23,24], combustion [25,26], and sol-gel techniques [8][9][10][11][12][27][28][29][30][31][32]. In most of these techniques, however, the synthesized nanoparticles are often not spherical and have a large size distribution.…”