ZnO synthesized in air by fs laser irradiation on metallic Zn thin films

The structural and optical properties of amorphous silicon (a-Si) and Al-dispersed amorphous silicon (a-Si:Al) thin films irradiated by femtosecond (fs) laser at various energy densities are investigated comparatively in this article. It is found that there is an uneven crystallization in both amorphous thin films by means of optical microscopy and laser Raman spectroscopy respectively. The crystallization in each pulse spot area is gradually weakened from the center to the edge along with the energy dispersion of laser irradiation. The laser induced crystallization in a-Si thin films begins early and develops more extensively compared to that in a-Si:Al thin films, and Al nanoparticles inhibit somehow the crystallization of a-Si in a-Si:Al thin films.

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Phase Variation of Amorphous-Si and Poly-Si Thin Films with Excimer Laser Irradiation

Japanese Journal of Applied Physics ◽

10.1143/jjap.35.l1473 ◽

1996 ◽

Vol 35 (Part 2, No. 11B) ◽

pp. L1473-L1475 ◽

Cited By ~ 8

Author(s):

Kuninori Kitahara ◽

Katsuyuki Suga ◽

Akito Hara ◽

Kazuo Nakajima

Keyword(s):

Thin Films ◽

Laser Irradiation ◽

Excimer Laser ◽

Phase Variation ◽

Excimer Laser Irradiation ◽

Amorphous Si

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Short pulsed laser irradiation of amorphous germanium thin films

Thin Solid Films ◽

10.1016/0040-6090(82)90411-4 ◽

1982 ◽

Vol 97 (1) ◽

pp. 1-7 ◽

Cited By ~ 13

Author(s):

R.K. Sharma ◽

S.K. Bansal ◽

R. Nath ◽

G.P. Srivastava

Keyword(s):

Thin Films ◽

Laser Irradiation ◽

Pulsed Laser ◽

Amorphous Germanium ◽

Pulsed Laser Irradiation

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Structural and Electrical Studies on ZnO-Based Thin Films by Laser Irradiation

Journal of Nanotechnology ◽

10.1155/2016/9385725 ◽

2016 ◽

Vol 2016 ◽

pp. 1-6 ◽

Cited By ~ 2

Author(s):

Shanyue Zhao ◽

Yinqun Hua ◽

Ruifang Chen ◽

Jian Zhang ◽

Ping Ji

Keyword(s):

Thin Films ◽

Grain Size ◽

Electrical Properties ◽

Grain Boundaries ◽

Laser Irradiation ◽

Nonlinear Coefficient ◽

Acceptor State ◽

Xrd Pattern ◽

Electrical Studies ◽

Structural And Electrical Properties

The effects of laser irradiation on the structural and electrical properties of ZnO-based thin films were investigated. The XRD pattern shows that the thin films were highly textured along thec-axis and perpendicular to the surface of the substrate. Raman spectra reveal that Bi2O3segregates mainly at ZnO-ZnO grain boundaries. After laser irradiation processing, the grain size of the film was reduced significantly, and the intrinsic atomic defects of grain boundaries and Bi element segregated at the grain boundary were interacted frequently and formed the composite defects of acceptor state. The nonlinear coefficient increased to 24.31 and the breakdown voltage reduced to 5.34 V.

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