Photovoltaic cell having a substrate glass made of aluminosilicate glass

一种硅铝酸盐玻璃、光伏电池的技术，应用在光伏发电、电路、电气元件等方向，能够解决玻璃不具有物理性质、抗结晶性没有表现出令人满意等问题

Active Publication Date: 2012-10-17
SCHOTT AG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, experiments have shown that the glasses do not have the required physical properties and in particular cases do not show satisfactory results with regard to resistance to crystallization

Method used

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  • Photovoltaic cell having a substrate glass made of aluminosilicate glass
  • Photovoltaic cell having a substrate glass made of aluminosilicate glass
  • Photovoltaic cell having a substrate glass made of aluminosilicate glass

Examples

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Embodiment

[0081] Within the scope of the teaching of the present invention, glass compositions were selected for Examples 1 to 16 and glasses were produced therefrom. For this purpose, a 1 liter platinum crucible was used for the melting, in which the raw material was brought to a melting temperature of 1580° C. over 3 hours and held at this temperature with stirring for 4 hours in the crucible. Subsequently, the melt was poured into a graphite mold preheated to 500°C. After casting, the casting mold was placed in a cooling furnace preheated to 650° C., and the cooling furnace was cooled to room temperature at 5° C. / hour. The glass compositions of Comparative Examples 1 to 3 were similarly produced. The compositions and properties of the glasses used in Examples 1 to 16 within the teaching of the present invention and the compositions of Comparative Examples 1 to 3 are summarized in Tables 1 to 4 below:

[0082] Table 1

[0083]

[0084] n.d. = Not measured devitrification (accord...

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Abstract

The invention relates to a photovoltaic cell, preferably a thin-film photovoltaic cell, having a substrate glass made of aluminosilicate glass, comprising a glass composition which has SiO2 and Al2O3 as well as the alkaline oxide Na2O and the alkaline earth oxides CaO, MgO, and BaO, and optionally further components, the glass composition containing 10 to 16 wt% Na2O, > 0 to < 5 wt% CaO, and > 1 to 10 wt% BaO, and the ratio of CaO:MgO being in the range of 0.5 to 1.7. The aluminosilicate glass used according to the invention is crystallization stable because of the selected quotient of CaO / MgO and has a transformation temperature Tg > 580 DEG C and a processing temperature VA < 1200 DEG C. Therefore, it represents a more thermally stable alternative to soda-lime glass. The object of the invention is also the use of the aluminosilicate glass as a substrate glass, superstrate glass, and / or cover glass for a photovoltaic cells, preferably for thin-film photovoltaic cells, in particular those based on semiconductor composite material, such as CdTe, CIS, or ClGS.

Description

technical field [0001] The present invention relates to a photovoltaic cell having a substrate glass made of aluminosilicate glass having high heat resistance, low processing temperature, and high resistance to crystallization. Background technique [0002] Soda-lime glass, also known as alkali-alkaline earth-silicate glass, is one of the oldest known glass types and is the most commonly used glass type in terms of quantity ("standard glass"). It is used in many fields, eg as flat glass such as mirror or window glass, as packaging glass eg for bottles, food packaging, and drinking glass, or in automobile construction as laminated safety glass. Known soda-lime glasses have the disadvantage that they have only a relatively low heat resistance, for example a transition temperature ("Tg") in the range of about 490 to 530°C. Thus, the applications of soda lime glass are significantly limited. [0003] The properties of glass and the products derived therefrom must be particular...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0392C03C3/087C03C3/112C03C3/118
CPCC03C3/112H01L31/03923C03C3/118Y02E10/541C03C3/087
Inventor 约尔格·欣里希·费希纳克里斯托夫·卡斯弗朗茨·奥特
Owner SCHOTT AG
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