Microstructure, crystallization kinetics and recording characteristics of Si/NiSi bilayer for write-once blu-ray disk

Ou, Sin-Liang; Chen, Sheng-Chi; Lin, Yan-Cheng; Kuo, T.Y.

doi:10.1016/j.tsf.2014.04.035

Cited by 4 publications

(5 citation statements)

References 11 publications

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“…It can be found that the GeCu layers had high optical contrast (at a wavelength of 405 nm), revealing that these films possess promising potential for blue laser recording media. Recently, Si/metal-silicide films including Si/CuSi [13] and Si/NiSi [14] have been presented in our previous works, employed as the recording layers of BD-R. The results reveal that better disc performance can be obtained in the Si/metal-silicide BD-R.…”

Section: Introductionmentioning

confidence: 97%

Ge/NiGe bilayer applied for the recording film of write-once blu-ray disc

Chen

Lin

et al. 2015

Vacuum

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Section: Introductionmentioning

confidence: 97%

Ge/NiGe bilayer applied for the recording film of write-once blu-ray disc

Chen

Lin

et al. 2015

Vacuum

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Section: Introductionmentioning

confidence: 99%

“…Except for the metal/a-Si recording films, the other layer structure of the recording film applied for the BD-R was proposed in our previous research, i.e., the metal-silicide/a-Si bilayer films [11,12]. In 2011 and 2014, we presented the Si/CuSi and Si/NiSi bilayer recording films of BD-Rs, respectively [11,12]. Based on these two studies, the metal-silicide/a-Si bilayer had both a lower crystallization temperature of Si and a higher optical contrast in comparison to those of the metal/a-Si bilayer, resulting in the better recording performance of BD-R.…”

Section: Introductionmentioning

confidence: 99%

Thermal, Optical, and Microstructural Properties of Magnetron Sputter-Deposited CuSi Films for Application in Write-Once Blu-Ray Discs

Lai

Yang

2019

Coatings

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In this study, 16-nm-thick CuSi films were deposited at room temperature by DC magnetron sputtering. The thermal, optical, and microstructural properties of CuSi films were investigated in detail. Moreover, the CuSi film was further used as a recording layer for write-once blu-ray disc (BD-R) applications. Based on the result of the reflectivity–temperature measurement, the CuSi layer had a decrease in the reflectivity between 180 and 290 °C. The as-deposited CuSi film possessed the Cu3Si phase. After annealing at 300 °C, the Si atoms existed in the CuSi film segregated and crystallized to the cubic Si phase. The activation energy of Si crystallization in the CuSi film was determined to be 1.2 eV. The dynamic tests presented that the BD-R containing the CuSi recording layer had minimum jitter values of 7.0% at 6 mW and 7.2% at 9 mW, respectively, for 1× and 4× recording speeds. This reveals that the CuSi film has great potential in BD-R applications.

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“…Fortunately, the crystallization temperature of a-Si can be decreased efficiently via the metal-induced-crystallization (MIC) technique. Therefore, several metal/Si bilayers or metal–silicide alloy layers were presented to apply to the recording films of optical recording media [ 1 , 2 , 3 , 4 , 5 , 6 ]. On the other hand, physical and chemical properties of amorphous germanium (a-Ge) are similar to those of a-Si, which indicates that a-Ge also possesses great potential applications in optical recording media.…”

Section: Introductionmentioning

confidence: 99%

“…However, in the above-mentioned studies, these two films combined with Ge and Cu materials were not employed for practical BD-R applications. Furthermore, in recent years, BD-Rs with Ge/metal-germanide (the Si/metal-silicide) recording films were proposed in our previous works [ 1 , 3 , 12 ]. The results showed that these BD-Rs had both higher optical contrast and the better recording performance than those with the metal/Ge or metal–germanide (the metal/Si or the metal-silicide) recording films.…”

Section: Introductionmentioning

confidence: 99%

Recording Characteristics, Microstructure, and Crystallization Kinetics of Ge/GeCu Recording Film Used for Write-Once Blu-Ray Disc

Lai

Wang

et al. 2016

Materials

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A Ge67Cu33 (16 nm) layer and a Ge (3 nm)/Ge67Cu33 (16 nm) bilayer were grown by sputtering at room temperature and used as the recording films for write-once blue laser media. In comparison to the crystallization temperature of Ge in a GeCu film (380.7 °C–405.1 °C), the crystallization temperature of Ge in a Ge/GeCu bilayer could be further decreased to 333.7 °C–382.8 °C. The activation energies of Ge crystallization were 3.51 eV ± 0.05 eV and 1.50 eV ± 0.04 eV for the GeCu and the Ge/GeCu films, respectively, indicating that the Ge/GeCu bilayer possesses a higher feasibility in high-speed optical recording applications. Moreover, the lower activation energy would lead to a larger grain size of Ge crystallization in the Ge/GeCu bilayer after the annealing process. Between the as-deposited and the annealed states, the optical contrasts (@ 405 nm) of the GeCu and the Ge/GeCu films were 26.0% and 47.5%, respectively. This reveals that the Ge/GeCu bilayer is more suitable for the recording film of a write-once blu-ray disc (BD-R) in comparison with the GeCu film. Based on the dynamic tests performed for 2× and 4× recording speeds, the optimum jitter values of the BD-R with the Ge/GeCu recording film were 7.4% at 6.3 mW and 7.6% at 8.6 mW, respectively.

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Microstructure, crystallization kinetics and recording characteristics of Si/NiSi bilayer for write-once blu-ray disk

Cited by 4 publications

References 11 publications

Ge/NiGe bilayer applied for the recording film of write-once blu-ray disc

Ge/NiGe bilayer applied for the recording film of write-once blu-ray disc

Thermal, Optical, and Microstructural Properties of Magnetron Sputter-Deposited CuSi Films for Application in Write-Once Blu-Ray Discs

Recording Characteristics, Microstructure, and Crystallization Kinetics of Ge/GeCu Recording Film Used for Write-Once Blu-Ray Disc

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