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US 2013/0255779 A1Published application
Intermediate thermal expansion coefficient glass
AssigneeCorsam Technologies LLC
InventorsBruce Gardiner Aitken, Carlo Anthony Kosik Williams
Life of this patent
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Abstract
CTE-matched silicate glasses and more particularly to low-alkali CTE-matched silicate glasses that are useful in semiconductor-based applications, such as photovoltaics are described along with methods of making such glasses.
Claims30
A glass comprising about, in mol %:
- 60 to 65 percent SiO2;
- 8 to 12 percent Al2O3;
- 7 to 15 percent B2O3;
- 0 to 8 percent M2O;
- and
- 9 to 15 percent RO;
- wherein, M is an alkali metal and wherein, R is an alkaline earth metal, and the glass has a coefficient of thermal expansion of from about 4.0 to about 7.5 ppm/° C. from 25 to 300° C.
4 more elements
A glass comprising about, in mol %:
- 20 to 70 percent SiO2;
- 5 to 20 percent Al2O3;
- 0 to 15 percent B2O3;
- 0 to 1 percent M2O;
- 0 to 10 percent MgO;
- 8 to 35 percent CaO;
- 0 to 16 percent SrO;
- 0 to 9 percent BaO;
- and
- 20 to 45 percent RO;
- wherein, M is an alkali metal and wherein, R is an alkaline earth metal, and the glass has a coefficient of thermal expansion of from about 4.0 to about 7.5 ppm/° C. from 25 to 300° C.
8 more elements
A glass comprising about, in mol %:
- 60 to 68 percent SiO2;
- 8 to 11 percent Al2O3;
- 6 to 11 percent B2O3;
- 0 to 1 percent M2O;
- 0 to 5 percent MgO;
- greater than 0 to 12 percent CaO;
- 1 to 12 percent SrO;
- 0 to 8 percent BaO;
- and
- 16 to 20 percent RO;
- wherein R is an alkaline earth metal, and M is an alkali metal, and the glass has a coefficient of thermal expansion of from about 4.0 to about 7.5 ppm/° C. from 25 to 300° C.
8 more elements
A photovoltaic module, comprising:
- a CdTe solar cell material,
- one or more conductive oxides, and
- a glass substrate, wherein the glass substrate has a coefficient of thermal expansion of from about 4.0 to about 7.5 ppm/° C. from 25 to 300° C.
A photovoltaic module, comprising:
- a CdTe solar cell material having a coefficient of thermal expansion,
- one or more conductive oxides, and
- a glass substrate, wherein the glass substrate has a coefficient of thermal expansion that is within about ±2.0 ppm/° C. of the coefficient of thermal expansion of the CdTe solar cell material from 25 to 300° C.
Dependencies are inferred from the claim text.