Epitaxial Growth of ZnO Films on ZnO-Buffered Al2O3 (0001) in Water at 95°C

Park, Jae Young; Choi, Sun‐Woo; Kim, Sang Sub

doi:10.1111/j.1551-2916.2011.04406.x

Cited by 8 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[5][6][7][8] Besides these vapor phase techniques, chemical bath deposition (CBD) is an attractive technique for obtaining TCO films because of the advantage of large-area film growth with low cost at low temperatures. [9][10][11][12][13] However, ZnO films grown by CBD have high resistivity and low carrier concentration for lack of doping methods. Group III elements such as Al and Ga are the most prevalent donors in ZnO, but it is difficult to handle Al and Ga compounds in aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Electrical and Structural Properties of ZnO Films Grown from Aqueous Solutions

Abe

Miura

2012

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

We use the analytic continuation procedure proposed in our earlier works to study the thermodynamics of black holes in 2 + 1 dimensions. A general black hole in 2 + 1 dimensions has g handles hidden behind h horizons. The result of the analytic continuation of a black-hole spacetime is a hyperbolic 3-manifold having the topology of a handlebody. The boundary of this handlebody is a compact Riemann surface of genus G = 2g + h − 1. Conformal moduli of this surface encode in a simple way the physical characteristics of the black hole. The moduli space of black holes of a given type (g, h) is then the Schottky space at genus G. The (logarithm of the) thermodynamic partition function of the hole is the Kähler potential for the Weil-Peterson metric on the Schottky space. The Bekenstein bound on the black-hole entropy leads us to conjecture a new strong bound on this Kähler potential.PACS number: 04.70.D

show abstract

Section: Introductionmentioning

confidence: 99%

Electrical and Structural Properties of ZnO Films Grown from Aqueous Solutions

Abe

Miura

2012

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

Growth of Transparent and Conductive Polycrystalline (0001)‐ZnO Films on Glass Substrates Under Low‐Temperature Hydrothermal Conditions

Podlogar

Richardson

Vengust

et al. 2012

Adv Funct Materials

View full text Add to dashboard Cite

Flat panel display technology seems to be an ever-expanding fi eld developing into a multibillion dollar market. A set of technical solutions involve a transparent conducting fi lm (TCF) that is today still dominated by indiumtinoxide (ITO). In a race to fi nd alternatives that would avoid the indium pitfalls, mainly due to its increasing price and limited natural availablity, replacement materials have been extensively investigated. This work demonstrates that by exploiting basic principles of crystal growth in geometrically constrained conditions, zinc oxide (ZnO) could easily be utilized for this purpose. ZnO layers were grown on inexpensive glass substrates via lowtemperature citrateassisted hydrothermal (HT) method. It was shown that in the nucleation stage the crystal growth can be effi ciently controlled by spatially confi ned oriented growth (SCOG) mechanism to produce smooth and dense (0001) oriented polycrystalline ZnO fi lms with superb optical properties. Our products show optical transparency of 82% and surprisingly low sheet resistance for undoped ZnO, only in the order of few 100 Ω sq − 1 . We believe that a very high degree of selforganization between the ZnO crystals in our polycrystalline fi lms grown under controlled SCOG conditions is main reason for the highest so far reported transparency to conductivity ratio for undoped ZnO thin fi lm ceramics.conductivity which meet the high standards for many photonic and/or electronic applications.

show abstract

Parametric study of seed‐layer formation for low‐temperature hydrothermal growth of highly oriented ZnO films on glass substrates

Podlogar

Vengust

Richardson

et al. 2013

Physica Status Solidi (a)

View full text Add to dashboard Cite

Applications involving transparent conducting films (TCFs), such as flat‐panel displays and touch screens technologies, are dominated by indium‐tin‐oxide (ITO). Increasing prices of indium in hand with weaknesses of ITO films make a strong argument for alternative TCFs with competitive characteristics and lower price. Here we demonstrate the potential of highly oriented zinc oxide (ZnO) films grown on glass substrates under low‐temperature hydrothermal (HT) conditions at 90 °C from aqueous solutions of Zn‐nitrate and Na‐citrate. Formation of a continuous ZnO seed‐layer with proper thickness, grain size, connectivity, and orientation of seed‐grains on glass is shown to be essential to achieve conditions for the growth of highly oriented (0001), smooth, transparent, and conductive ZnO films according to the spatially confined oriented growth (SCOG) mechanism. The film grown on homogeneous seed‐layer with grain size of about 20 nm showed optical transmittance of up to 82% and relatively low resistivity for undoped ZnO ceramic in order of few 100 Ω sq−1. Such characteristics are explained by highly oriented crystalline texture and high coalescence of ZnO crystals in these films.

show abstract

Epitaxial Growth of ZnO Films on ZnO-Buffered Al2O3 (0001) in Water at 95°C

Cited by 8 publications

References 23 publications

Electrical and Structural Properties of ZnO Films Grown from Aqueous Solutions

Electrical and Structural Properties of ZnO Films Grown from Aqueous Solutions

Growth of Transparent and Conductive Polycrystalline (0001)‐ZnO Films on Glass Substrates Under Low‐Temperature Hydrothermal Conditions

Parametric study of seed‐layer formation for low‐temperature hydrothermal growth of highly oriented ZnO films on glass substrates

Contact Info

Product

Resources

About