An X-ray and gamma-ray shielding glass, including the following components in weight-%: 10-35% SiO.sub.2; 60-70% PbO; 0-8% B.sub.2O.sub.3; 0-10% Al.sub.2O.sub.3; 0-10% Na.sub.2O; 0-10% K.sub.2O; 0-0.3% As.sub.2O.sub.3; 0-2% Sb.sub.2O.sub.3; 0-6% BaO; and 0.05-2% ZrO.sub.2.

Radiation shielding glass articles with thin glass faceplates that improve transmission are disclosed. A radiation shielding glass article includes a radiation shielding glass having a first surface and an opposing second surface; and a first thin glass faceplate having a first surface and an opposing second surface, wherein one of said first surface or second surface of said first thin glass faceplate faces the first surface of the radiation shielding glass, wherein the first thin glass faceplate having a thickness of less than or equal to 1.0 mm is bonded to the first surface of the radiation shielding glass, and wherein the first thin glass faceplate is one of an alkaline boro-aluminosilicate glass, or a chemically strengthenable sodium aluminum silicate glass.

Radiation shielding glass articles with thin glass faceplates that improve transmission are disclosed. A radiation shielding glass article includes a radiation shielding glass having a first surface and an opposing second surface; and a first thin glass faceplate having a first surface and an opposing second surface, wherein one of said first surface or second surface of said first thin glass faceplate faces the first surface of the radiation shielding glass, wherein the first thin glass faceplate having a thickness of less than or equal to 1.0 mm is bonded to the first surface of the radiation shielding glass, and wherein the first thin glass faceplate is one of an alkaline boro-aluminosilicate glass, or a chemically strengthenable sodium aluminum silicate glass.

The present invention relates to a glass powder and a silver-aluminum paste for use on a front of an N-type double-sided solar cell comprising a conductive silver powder, a silicon-aluminum alloy powder, the glass powder and an organic vehicle. The glass powder comprises the following components by weight: 0-50% of PbO, 0-50% of BiO, 5-15% of B.sub.2O.sub.3, 8-9% of SiO.sub.2, 2-3% of Al.sub.2O.sub.3 and 5-15% of ZnO; silicon and aluminum in the glass powder have a mass ratio of 4:1-5:1; the conductive silver powder has a content of 80-90 wt %; the conductive silver powder comprises a nano-silver powder and a silver alloy powder, and the nano-silver powder to the silver alloy powder have a mass ratio of 1:18-1:90.

The present invention relates to a glass powder and a silver-aluminum paste for use on a front of an N-type double-sided solar cell comprising a conductive silver powder, a silicon-aluminum alloy powder, the glass powder and an organic vehicle. The glass powder comprises the following components by weight: 0-50% of PbO, 0-50% of BiO, 5-15% of B.sub.2O.sub.3, 8-9% of SiO.sub.2, 2-3% of Al.sub.2O.sub.3 and 5-15% of ZnO; silicon and aluminum in the glass powder have a mass ratio of 4:1-5:1; the conductive silver powder has a content of 80-90 wt %; the conductive silver powder comprises a nano-silver powder and a silver alloy powder, and the nano-silver powder to the silver alloy powder have a mass ratio of 1:18-1:90.

The present disclosure discloses a lithium and tellurium-silicate binary glass-oxide-complex system and a conductive paste containing the complex system, and belongs to the technical field of solar cells. The present disclosure uses a “functional modularity” strategy in the formula design of a glass-oxide-complex system (GOC). Alkali metal ions with high migration and reactivity are separated from a glass body with high fluidity, thus a binary complex system is constructed, that is, a lithium-containing glass-oxide-complex (Li-GOC) with high activity and a tellurium-silica-containing glass-oxide-complex (Si—Te-GOC) with high fluidity. Through the modularized formula strategy, active ingredients can be better controlled, so as to obtain more balanced contact and open circuit voltage and improve the photoelectric conversion efficiency of a solar cell.

The present disclosure discloses a silicon-lithium-lead system, a conductive paste and a preparation method thereof, and belongs to the field of solar cells. A silicon-lead-lithium oxide frit includes the following composition: Si.sub.a—Pb.sub.b—Li.sub.c—(B.sub.x—Al.sub.y—Bi.sub.z)—M.sub.e—O.sub.f, where, 0<a<0.6, 0<b<0.8, 0<c<0.6, x+y+z=d, the x and the y are not zero at the same time, and the z is greater than zero. In the present disclosure, by adding B.sub.2O.sub.3 and Bi.sub.2O.sub.3, Al.sub.2O.sub.3 and Bi.sub.2O.sub.3, or B.sub.2O.sub.3, Al.sub.2O.sub.3 and Bi.sub.2O.sub.3 at the same time, the prepared frit has greater water resistance, and therefore, a solar cell prepared by using the conductive paste containing glass has good water resistance. In addition, the photoelectric conversion efficiency of the solar cell prepared by using the conductive paste prepared in the present disclosure can also be maintained, or even be slightly improved.

The present disclosure discloses a lithium-tellurium silicon-lead bismuth multi-component glass-oxide-complex system and conductive paste containing same, belonging to the technical field of solar cells. According to the present disclosure, a “functional modularization” strategy is adopted in a formula design of the glass-oxide-complex system, and glass oxide systems with selective reactivity for different passivation layers are compounded based on the structures, compositions and thicknesses of the passivation layers, so that a paste formula is developed, which is composed of lithium-containing, tellurium-silicon-containing and lead-containing glass oxides. Due to adoption of the modularized formula strategy, active ingredients can be better controlled, and the overall paste formula is more optimized, so that the laminated passivation layers can be selectively burned through to obtain a more balanced contact, and better battery performance on silicon wafers with different passivation layer thicknesses can be achieved, thus achieving excellent photoelectric conversion efficiency.

Glasses containing silicon dioxide (SiO.sub.2) and/or boron oxide (B.sub.2O.sub.3) as glass formers and having a refractive index n.sub.d of greater than or equal to 1.80, as measured at 587.56 nm, a density of less than or equal to 5.5 g/cm.sup.3, as measured at 25° C., and a high transmittance to, particularly to blue light, are provided. Optionally, the glasses may be characterized by a high transmittance in the visible and near-ultraviolet (near-UV) range of the electromagnetic spectrum and/or good glass forming ability.

Glasses containing silicon dioxide (SiO.sub.2) and/or boron oxide (B.sub.2O.sub.3) as glass formers and having a refractive index n.sub.d of greater than or equal to 1.9, as measured at 587.56 nm, and a density of less than or equal to 5.5 g/cm.sup.3, as measured at 25° C., are provided. Optionally, the glasses may be characterized by a high transmittance in the visible and near-ultraviolet (near-UV) range of the electromagnetic spectrum and/or good glass forming ability.