摘要:
Textured superstrates for photovoltaic cells, for example, silicon tandem photovoltaic cells with light scattering properties which are sufficient for light trapping independent of wavelength are described herein. Features of a textured surface of a superstrate, via the method(s) used to make the textured superstrate, can be tailored to provide the desired light scattering/trapping properties. The method includes grinding and lapping or grinding, lapping, and etching of a glass superstrate.
摘要:
A lens array and a method for fabricating a lens array that is relatively flat and has useful lenses with relatively uniform sag heights are described herein. In one embodiment, the lens array includes a one-dimensional array of useful lenses and two sacrificial lenses each of which is formed next to an end of a row of the useful lenses to help maintain relatively uniform sag heights across the useful lenses. In another embodiment, the lens array includes a two-dimensional array of useful lenses and a plurality of perimeter lenses each of which is formed next to an end of a row or a column of the useful lenses to help maintain relatively uniform sag heights across the useful lenses. In yet another embodiment, the lens array includes an array of useful lenses and a glass region (including possibly a glass matrix) located within an opal border and outside an opal region that surrounds the useful lenses to help minimize warpage of the lens array. In fact, there are many different embodiments of the lens array described herein that incorporate one or more of the aforementioned features.
摘要:
Methods of fabricating dimensional silica-based substrates or structures comprising a porous silicon layers are contemplated. According to one embodiment, oxygen is extracted from the atomic elemental composition of a silica glass substrate by reacting a metallic gas with the substrate in a heated inert atmosphere to form a metal-oxygen complex along a surface of the substrate. The metal-oxygen complex is removed from the surface of the silica glass substrate to yield a crystalline porous silicon surface portion and one or more additional layers are formed over the crystalline porous silicon surface portion of the silica glass substrate to yield a dimensional silica-based substrate or structure comprising the porous silicon layer. Embodiments are also contemplated where the substrate is glass-based, but is not necessarily a silica-based glass substrate. Additional embodiments are disclosed and claimed.
摘要:
The disclosure is directed to a chemically strengthened glass having antimicrobial properties and to a method of making such glass. In particular, the disclosure is directed to a chemically strengthened glass with antimicrobial properties and with a low surface energy coating on the glass that does not interfere with the antimicrobial properties of the glass. The antimicrobial has an Ag ion concentration on the surface in the range of greater than zero to 0.047 μg/cm2. The glass has particular applications as antimicrobial shelving, table tops and other applications in hospitals, laboratories and other institutions handling biological substances, where color in the glass is not a consideration.
摘要翻译:本发明涉及具有抗微生物性质的化学强化玻璃和制造这种玻璃的方法。 特别地,本公开涉及具有抗微生物性质的化学强化玻璃,并且在玻璃上具有不影响玻璃的抗微生物性能的低表面能涂层。 抗微生物剂在表面上的Ag离子浓度在大于0至0.047μg/ cm 2的范围内。 该玻璃在医院,实验室和其他处理生物物质的机构中具有特殊应用作为抗菌架,桌面和其他应用,其中不考虑玻璃中的颜色。
摘要:
A broadband source, including associated devices that may incorporate the broadband source, which makes use of at least one, preferably two or more broad fluorescence spectra in combination from one or more species of transition metal ions doped in one or more material bodies. The bodies are selected from crystalline, glass-ceramic, glass, or polymer-organic materials. The broadband source or devices can generate a very broad fluorescence spectrum. The combined spectrum preferably spans a wavelength range of about 500 nm to 600 nm to 700 nm, and having an intensity that does not deviate from an average intensity by more than about 10 dB, over a range or portion of the near infrared region.
摘要:
A gain medium for use in optical amplifiers or laser oscillators is disclosed. The gain medium includes a transition-metal doped glass-ceramic material having a crystal phase and a glass phase. The crystal phase is formed in situ in the glass phase, with the transition metal ions preferentially partitioning into the crystalline sites from the glass phase. The crystalline sites so formed have a size of less than 50 nm, and the transition metal ions within them are capable of lasing at a wavelength within the range of about 900 to 3000 nm. Also disclosed are amplifier and laser oscillator configurations, where the glass-ceramic gain medium is applied in a variety of configurations. Also disclosed is a method of amplifying a signal of light wherein the glass-ceramic gain medium is pumped with light energy so as to excite the transition metal ions, and the signal of light is transmitted through the gain medium while the transition metal ions are excited, whereby the signal of light is amplified. Also disclosed is a method of producing laser oscillation wherein the glass-ceramic gain medium is included in a laser cavity, pumped with optical energy to excite the transition metal ions, and the resulting radiation is forced to oscillate by the use of reflecting surfaces for feedback.
摘要:
The disclosure is directed to glass frits materials containing phosphors that can be used in LED lighting devices and for methods associated therewith for making the phosphor containing frit materials. Suitable non-lead glasses have a composition, in mol%, in the range of 20-24% K20, 8-12% ZnO, 2-6% A1203, 35-41% 3203 and 22-28 Si02. Suitable leaded glasses have a composition, in mol%, in range of 72-79% PbO, 8-13% A1203, 8-13% B203, 2-5% Si02 and 0-0.3% Sb203. Commercial high-lead glass can be used in practicing the disclosure. Among the unique advantages are the ability to blend two or more phosphors within the same frit layer which will yield a multi -phosphor- containing glass after firing; the ability to deposit the phosphor onto a substrate into a desired geometric pattern; and the fluorescing layer can be applied to the active plane, with the glass serving as protective substrate.
摘要:
The invention is directed to a silver-containing polarizing boroaluminosilicate glass composition that has been doped with a noble metal selected from the group consisting of Pt, Pd, Os, Ir, Rh and Ru, including mixtures thereof ,to nucleate and precipitate silver ions to silver metal without the need for a reducing atmosphere step. The invention is further directed to a method for making the glass composition of the invention. Using the composition and method of the invention, one can prepare a glass having a selected null transmission range.
摘要:
Disclosed is a photonic band-gap crystal waveguide having the physical dimension of the photonic crystal lattice and the size of the defect (12, 20) selected to provide for optimum mode power confinement to the defect. The defect (12, 20) has a boundary which has a characteristic numerical value associated with it. The ratio of this numerical value to the pitch (4) of the photonic crystal is selected to avoid surface modes found to exist in certain configurations of the photonic band-gap crystal waveguide. Embodiments in accord with the invention having circular and hexagonal defect cross sections are disclosed and described. A method of making the photonic band-gap crystal waveguide is also disclosed and described.