Analysis of the etching behavior of ZnO ceramics

Jo, Wook; Kim, Sae-Jin; Kim, Do-Hyeon

doi:10.1016/j.actamat.2005.05.017

Cited by 48 publications

(37 citation statements)

References 24 publications

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“…ZnO is one of the most widely used wurtzite structured materials, not only as single crystal but also as bulk or thin-films [3]. ZnO powders have many interesting properties such as electrical, dielectric, piezoelectric, pyroelectric, acousto-optic, electro-optic, nonlinear optic [4].…”

Section: Introductionmentioning

confidence: 99%

Sintering behavior of ZnO:Al ceramics fabricated by sol‐gel derived nanocrystalline powders

Bahşi

Aslan

Özer

et al. 2009

Cryst. Res. Technol.

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ZnO:Al ceramics (Zn:Al, 0.95:0.05) were prepared by using sol-gel derived nanocrystalline powders. XRD patterns of the doped ceramics revealed the existence of both zincite (JCPDS 36-1451) and gahnite (JCPDS 5-0669) phases. Gahnite phase (ZnAl 2 O 4 ) was segregated along the ZnO grain boundaries. At the sintering temperature of 1200 °C, relative density of the undoped and Al doped ceramics were measured as 0.695 and 0.628, respectively. Both grain size and relative density of the ceramics decreased with Al doping.

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Section: Introductionmentioning

confidence: 99%

Sintering behavior of ZnO:Al ceramics fabricated by sol‐gel derived nanocrystalline powders

Bahşi

Aslan

Özer

et al. 2009

Cryst. Res. Technol.

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“…The presence of IB is the characteristic microstructure for the Sb 2 O 3 -doped ZnO [10,11]. Furthermore, its presence is revealed only by [11]. Figure 9 shows the corresponding curves for the size distribution of ZnO grains in the specimens shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Effect of Bi2O3 and Sb2O3 on the grain size distribution of ZnO

2007

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In the present study, the effect of Bi 2 O 3 and Bi 2 O 3 +Sb 2 O 3 additions on the size distribution of ZnO grains is investigated. Without the usage of a powder bed, the addition of Bi 2 O 3 provides a transient liquid phase that enhances the densification. The residual Bi segregates alters the surface/grain boundary energy ratio, which encourages the ZnO grains to grow. The size variation is also increased. The addition of both Bi 2 O 3 and Sb 2 O 3 induces the formation of pyrochlore, spinel and inversion boundary. Their presence reduces not only the average grain size, but also the size variation.

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“…[4][5][6] For less compact ZnO films deposited at lower substrate temperatures, mild etching agents such as NH 4 Cl have to be utilized to achieve sufficient roughnesses. 7,8 Even though the chemical etching of single crystalline ZnO has been thoroughly investigated in the 1960s 9,10 on the basis of a dangling bond model, 11 a significant complexity arises from the polycrystalline nature of sputter-deposited ZnO:Al thin films. Since the etch rate is strongly dependent on the crystalline orientation, 10 an inhomogeneous etching occurs on structurally heterogeneous substrates leading to complex topographies as the material corrosion proceeds.…”

Section: Manuscriptmentioning

confidence: 99%

Electrochemical Etching of Zinc Oxide for Silicon Thin Film Solar Cell Applications

Pust

Worbs

Hüpkes

et al. 2011

J. Electrochem. Soc.

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A novel approach is presented for introducing a surface morphology with beneficial light scattering properties to sputter-deposited ZnO:Al films, which are used as front contact in Si thin film photovoltaic devices. Electrochemical anodization was used to trigger local dissolution, leading to interfacial structures complementary to those commonly prepared by an etching step in diluted HCl. By systematic variation of electrochemical etching conditions and electrolytes, the essential experimental parameters for designing the ZnO film surface were evaluated. The prepared films were characterized by scanning electron microscopy, four-point resistance and Hall measurements. Furthermore, electrochemical and chemical etching steps were combined to generate a diversity of different surface morphologies. The application of such films in microcrystalline Si single junction solar cells has shown promising initial results.

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Analysis of the etching behavior of ZnO ceramics

Cited by 48 publications

References 24 publications

Sintering behavior of ZnO:Al ceramics fabricated by sol‐gel derived nanocrystalline powders

Sintering behavior of ZnO:Al ceramics fabricated by sol‐gel derived nanocrystalline powders

Effect of Bi2O3 and Sb2O3 on the grain size distribution of ZnO

Electrochemical Etching of Zinc Oxide for Silicon Thin Film Solar Cell Applications

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