Phosphate sealing frits with improved H2O durability
First Claim
1. A lead-free sub-pyrophosphate SnO—
- ZnO—
P2O5 glass composition, calculated in mole percent on an oxide basis, consisting essentially of;
24.5 to 29.0% P2O5;
1.2 to 5.0% B2O3;
1.0 to 2.0% Al2O3;
0.0 to 2.0% SiO2; and
sufficient amounts of SnO and ZnO, wherein the molar ratio of SnO;
ZnO is in the range of about 5.0;
1 to 12;
1, and wherein the glass composition exhibits, under NMR spectroscopic analysis of 11B nuclei, a signal containing at least two peaks at a chemical shift in the range of approximately −
18 to −
25 ppm.
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Accused Products
Abstract
Glass frit compositions, calculated in mole percent on an oxide basis, consisting essentially of 24.5 to 29.0% P2O5; 1.0 to 5.0% B2O3; 1.0 to 2.0% Al2O3; and sufficient amounts of SnO and ZnO (51.5 to 66.5% SnO, and 5.0-12.0% ZnO), wherein the molar ratio of SnO:ZnO is in the range of about 5.0:1 to 12:1, and 0.0 to 2.0% SiO2. The glass compositions exhibit, under NMR spectroscopic analysis of 11B nuclei, a signal containing at least two peaks at a chemical shift in the range of approximately −18 to −25 ppm. The frit compositions exhibit long term stability, durability, and resistance to attack against moisture in high temperature and humidity conditions and are capable of attaching optical fiber Bragg gratings without the use of a hermetic chamber and the like. An optoelectronic device that employs a sealing material that comprises a frit made from the glass compositions.
18 Citations
22 Claims
-
1. A lead-free sub-pyrophosphate SnO—
- ZnO—
P2O5 glass composition, calculated in mole percent on an oxide basis, consisting essentially of;
24.5 to 29.0% P2O5;
1.2 to 5.0% B2O3;
1.0 to 2.0% Al2O3;
0.0 to 2.0% SiO2; and
sufficient amounts of SnO and ZnO, wherein the molar ratio of SnO;
ZnO is in the range of about 5.0;
1 to 12;
1, and wherein the glass composition exhibits, under NMR spectroscopic analysis of 11B nuclei, a signal containing at least two peaks at a chemical shift in the range of approximately −
18 to −
25 ppm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- ZnO—
-
10. A sealing material containing a lead-free sub-pyrophosphate SnO—
- ZnO—
P2O5 glass frit, the composition of the glass as calculated on mole percent on an oxide basis, consists essentially of;
25.0 to 28.4% P2O5;
1 to 5% B2O3;
1 to 2% Al2O3;
0.0 to 1.0% SiO2; and
sufficient amounts of SnO and ZnO, wherein the molar ratio of SnO;
ZnO ranges from about 5.0;
1 to 12;
1. - View Dependent Claims (11, 12, 13, 14, 15, 17, 18, 19, 20)
- ZnO—
-
16. An optoelectronic device having a sealing material that joins component parts, the sealing material comprising a glass frit having a composition, calculated in mole percent on an oxide basis, consisting essentially of:
- 24.5 to 28.5% P2O5;
2.0 to 5.0% B2O3;
1.0 to 2.0% Al2O3;
0.0-2.0% SiO2; and
sufficient amounts of SnO and ZnO, wherein the molar ratio of SnO;
ZnO is in the range of 5;
1 to 12;
1.
- 24.5 to 28.5% P2O5;
-
21. A method of attaching an optical fiber to a substrate by a sealing material comprising:
- a) providing at least one optical fiber and a substrate;
b) using a sealing material comprising a lead free sub-pyrophosphate frit having a composition, as calculated in mole percent on an oxide basis, consisting essentially of 25.0 to 29.0% P2O5, 1.1 to 5.0% B2O5, 1.0 to 2.0% Al2O3 , with SnO and ZnO in amounts such that the molar ratio of SnO;
ZnO is in the range from 5;
1 to 12;
1, (approximately 51.5 to 66.5% SnO, 5.0 to 12.0% ZnO), and 0.0 to 2.0% SiO2, to attach the fiber to the substrate;
c) heating the sealing material to form a bond between the substrate, frit, and optical fiber, thereby attaching the optical fiber to the substrate. - View Dependent Claims (22)
- a) providing at least one optical fiber and a substrate;
Specification