Concept

Czochralski method

Related publications (73)

Improved multicrystalline silicon ingot crystal quality through seed growth for high efficiency solar cells

Work on silicon crystal quality improvement and defect control has been carried out on lab-scale seeded growth ingots allowing wafers with controlled grain orientations. Both and monocrystalline-like ingots were produced using a combination of ...

2012

Hidden defects in silicon nanowires

Cyril Cayron

Recent publications have reported the presence of hexagonal phases in Si nanowires. Most of these reports were based on 'odd' diffraction patterns and HRTEM images - 'odd' means that these images and diffraction patterns could not be obtained on perfect si ...

2012

A-Si:H/c-Si heterojunctions: a future mainstream technology for high-efficiency crystalline silicon solar cells ?

Christophe Ballif, Antoine Descoeudres, Stefaan De Wolf, Loris Barraud

In this contribution, we shortly review the main features of amorphous/crystalline silicon heterojunction (SHJ) solar cells, including interface defects and requirements for high quality interfaces. We show how a process flow with a limited number of proce ...

Ieee2012

Third-Order Susceptibility of Silicon Crystals Measured with Millimeter-Wave Gyrotron

Jean-Philippe Hogge, Markus Siegrist

We investigate experimental dependence of the third harmonic generation efficiency in the n-type Si crystals on the geometrical dimensions of the sample, polarization and power of the fundamental wave. The efficiency increases monotonically with the rise o ...

2011

Films of brookite TiO2 nanorods/nanoparticles deposited by matrix-assisted pulsed laser evaporation as NO2 gas-sensing layers

Raffaella Buonsanti, Mikaël Martino

TiO2 nanorods in the brookite phase, with av. dimensions of 3-4 nm × 20-50 nm, were synthesized by a wet-chem. aminolysis route and used as precursors for thin films that were deposited by the matrix-assisted pulsed laser evapn. (MAPLE) technique. A nanoro ...

2011

Al catalyzed growth of silicon nanowires and subsequent in situ dry etching of the catalyst for photovoltaic application

Cyril Cayron, Vasiliki Tileli

Aluminum-catalyzed epitaxial growth of silicon nanowire (SiNW) arrays was performed on Si wafer by chemical vapor deposition at 600°C. The arrays showed a low optical total reflectance in the visible light spectrum, with a minimum of 2% around 450nm wavele ...

2011

Quantification of multiple twinning in face centred cubic materials

Cyril Cayron

Grain boundary engineering (GBE) aims at optimizing the properties of face centred cubic materials with low stacking fault energy by creating a high content of special twin boundaries. Quantifying twinning and its parameters, such as the twin related domai ...

2011

Surface-Tension-Driven Multi-Chip Self-Alignment Techniques for Heterogeneous 3D Integration

Yusuf Leblebici, Fengda Sun

Surface-tension-driven self-alignment (SA) is a promising technique for heterogeneous die-level stacking. Multiple dies can be manipulated in parallel at minimal cost. A defined amount of water present between the die and a carrier substrate is used to ali ...

IEEE Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

High oxygen pressure single crystal growth of highly Ca-doped spin ladder compound Sr14-xCaxCu24O41 (x > 12)

Neda Nikseresht Ghanepour, Shuang Wang, Kazimierz Conder

Large size high-quality Ca-doped Sr14-xCaxCu24O41 (x=12.2, 12.6 and 13) spin ladder superconducting single crystals were grown using a modified mirror floating zone furnace with oxygen pressure up to 35 bar. The qualities of the as-grown single crystals we ...

Elsevier2011

Atomistic modeling of dopant segregation in alpha-alumina ceramics: Coverage dependent energy of segregation and nominal dopant solubility

Paul Bowen, Ulrich Aschauer, Sandra Caroline Galmarini, Abhishek Tewari, Yann Aman

Microstructural control is a key aspect in producing ceramics with tailored properties and is often achieved by using dopants in a rather empirical fashion. Atomic scale simulations could provide much needed insight but the long-standing challenge of linki ...

2011

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