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Multijunction solar cell having a fused silica cover glass

A technology of solar cells and fused silica, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as problems with thermal expansion coefficients

Pending Publication Date: 2020-10-23
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the difference in the coefficient of thermal expansion of the material used for the cover glass versus the material used for the solar cell can be problematic

Method used

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  • Multijunction solar cell having a fused silica cover glass
  • Multijunction solar cell having a fused silica cover glass
  • Multijunction solar cell having a fused silica cover glass

Examples

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Embodiment Construction

[0015] Specific embodiments of the present disclosure are described below with reference to the accompanying drawings. In the description, common features are indicated by common reference numerals throughout the drawings.

[0016] The drawings and the following description illustrate specific example implementations. It should be appreciated that those skilled in the art will be able to devise arrangements that, although not explicitly described or shown herein, embody the principles described herein and are included within the scope of the claims that follow this specification. Furthermore, any examples described herein are intended to aid in understanding the principles of the disclosure and should be construed without limitation. As a result, the present disclosure is not limited to the specific embodiments or examples described below, but by the claims and their equivalents.

[0017] As used herein, various terms are for the purpose of describing particular implementati...

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Abstract

The invention relates to a multi-junction solar cell with fused quartz cover glass. The solar cell includes a portion of a germanium layer having a first side and a second side. The second side has characteristics consistent with the grinding operation and the etching operation to thin the germanium wafer to form a germanium layer. The edge of the portion of the germanium layer may have characteristics consistent with dicing using a saw of diamond coating. The portion of the germanium layer may have a thickness of less than 150 microns. Compound semiconductor material and circuitry are coupledto a first side of the portion of the germanium layer to define a multi-junction solar cell. The fused quartz cover glass is coupled to the multi-junction solar cell via a silicone-based adhesive.

Description

technical field [0001] The present invention relates to multijunction solar cells with fused silica cover glass. Background technique [0002] This disclosure relates to solar cells. Satellite missions are exposed to proton and electron radiation. For example, in medium Earth orbit (MEO), the density of protons and electrons is higher than at the surface, which leads to faster degradation of certain components. To illustrate, solar cells used in satellites typically have a borosilicate cover glass. In MEO, the borosilicate cover glass darkens due to exposure to proton and electron radiation, and as a result, the output power of the solar cell (or solar cell array) is reduced. Fused silica experiences less darkening effects due to proton and electron radiation than borosilicate glass materials. However, the thermal expansion coefficient of fused silica is significantly different from that of Ge and compound semiconductor materials used to form space solar cells. Orbital ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/048
CPCH01L31/0481H01L31/18H01L31/1808H01L31/048H01L31/0687Y02E10/544Y02E10/547Y02P70/50H01L21/67057H01L21/67092H01L31/028H01L31/186
Inventor E·M·雷德尔F·F·霍J·A·施瓦兹
Owner THE BOEING CO