TCSI1: TCS Ultrapure Silicon Database

Database name (acronym):	TCS Ultrapure Silicon Database (TCSI)
Database owner:	Thermo‑Calc Software AB
Database version:	1.2

TCSI1 is a thermodynamic database for the application of solar grade silicon materials. It is developed using the CALPHAD approach based on experimental and First Principles results. The database focuses on the impurity solubility in silicon with diamond structure within a 34-element framework. The database can be used with the add-on Diffusion Module (DICTRA) , Precipitation Module (TC-PRISMA), and any Thermo‑Calc Software Development Kit (SDK).

Included Elements (34)

Ag	Al	As	Au	B	Bi	C	Ca	Co	Cr
Cu	Fe	Ga	Ge	In	Li	Mg	Mn	Mo	N
Na	Ni	O	P	S	Sb	Si	Sn	Te	Ti
V	W	Zn	Zr

Phases

TCSI1 contains 84 solution phases and intermetallic compounds. Compounds having the same crystal structure might have been merged into one phase.

In Console Mode, you can list phases and constituents in the Database (TDB) module and the Gibbs (GES) module. For some phases, supplementary information is included in the definitions. To show the information, it is recommended in the Database (TDB) module to use the command List_System with the option Constituents.

TCSI1 Models for the Included Phases

Limits

As in the spirit of the CALPHAD method, predictions can be made for multicomponent systems by extrapolation into multicomponent space of data critically evaluated and assessed based on binary, ternary and in some cases higher order systems. However, critical calculations must always be verified by equilibrium experimental data; it is the user's responsibility to verify the calculations but Thermo‑Calc Software AB is interested to know about any significant deviations in order to improve any future release.