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CN-121974561-A - Glass and photovoltaic module comprising same

CN121974561ACN 121974561 ACN121974561 ACN 121974561ACN-121974561-A

Abstract

The application provides a glass which consists of one or more of 20-39% of Al 3+ , 10-20% of P 5+ , 1-10% of Ba 2+ , 1-10% of Sr 2+ , 1-20% of Ca 2+ , 1-20% of Mg 2+ , 5-20% of Na + , 1-10% of K + , 0-8% of Y 3+ 、La 3+ 、Gd 3+ 、Lu 3+ and 75-85% of F ‑ and 15-25% of O 2‑ in terms of mole percent of cations. The application also provides a photovoltaic module comprising the glass. In addition, the application also provides another photovoltaic module, which comprises a solar cell and glass covered on the solar cell, wherein the glass comprises fluorophosphate. The photovoltaic module provided by the application has excellent photoelectric conversion efficiency.

Inventors

  • WANG XUAN
  • ZHANG WENDONG
  • WAN RUI
  • FAN QI

Assignees

  • 隆基绿能科技股份有限公司

Dates

Publication Date
20260505
Application Date
20241028

Claims (17)

  1. 1. A glass, characterized in that it consists of, in mole percent of cations, a combination of one or more of 20% -39% Al 3+ , 10% -20% P 5+ , 1% -10% Ba 2+ , 1% -10% Sr 2+ , 1% -20% Ca 2+ , 1% -20% Mg 2+ , 5% -20% Na + , 1% -10% K + , 0-8% Y 3+ 、La 3+ 、Gd 3+ 、Lu 3+ , and 75% -85% F - , 15% -25% O 2- .
  2. 2. Glass according to claim 1, characterized in that the molar ratio of F - to O 2- is 3-4.5, preferably the molar ratio of F - to O 2- is 3.5-4.5, more preferably the molar ratio of F - to O 2- is 4-4.5.
  3. 3. Glass according to claim 1, characterized in that the sum of the mole percentages of Ba 2+ 、Sr 2+ 、Ca 2+ 、Mg 2+ is 30% -40%, preferably the sum of the mole percentages of Ba 2+ 、Sr 2+ is smaller than the sum of the mole percentages of Ca 2+ 、Mg 2+ .
  4. 4. Glass according to claim 1, characterized in that the refractive index of the glass is 1.42-1.45, preferably 1.43-1.44.
  5. 5. Glass according to claim 1, characterized in that the transmittance of the glass is >90%, preferably >92%.
  6. 6. Glass according to claim 1, characterized in that the glass is a tempered glass having a bending strength of more than 90MPa, preferably of 90-160MPa.
  7. 7. A photovoltaic module comprising a solar cell and the glass of any one of claims 1-6 overlying the solar cell.
  8. 8. A photovoltaic module comprising a solar cell and a glass overlying the solar cell, the glass comprising a fluorophosphate.
  9. 9. The photovoltaic module according to claim 8, characterized in that the refractive index of the glass is lower than 1.45, preferably between 1.38 and 1.45, more preferably between 1.42 and 1.45.
  10. 10. The photovoltaic module according to claim 8, characterized in that the transmittance of the glass is >90%, preferably >92%.
  11. 11. The photovoltaic module of claim 8, wherein the glass is substantially free of elemental silicon.
  12. 12. The photovoltaic module of claim 8, wherein the glass comprises Al 3+ 、P 5+ 、M a 2+ 、M b + 、M c 3+ 、F - and O 2- , wherein M a 2+ is selected from the group consisting of one or more of Ba 2+ 、Sr 2+ 、Ca 2+ 、Mg 2+ , M b + is selected from the group consisting of one or more of Na + 、K + , and M c 3+ is selected from the group consisting of one or more of Y 3+ 、La 3+ 、Gd 3+ 、Lu 3+ .
  13. 13. The photovoltaic module of claim 12, wherein the molar ratio of F - to O 2- is 3-4.5, preferably 3.5-4.5, more preferably 4-4.5.
  14. 14. The photovoltaic module of claim 12, wherein M a 2+ is a combination of Ba 2+ 、Sr 2+ 、Ca 2+ 、Mg 2+ .
  15. 15. The photovoltaic module of claim 12, wherein M b + is a combination of Na + 、K + .
  16. 16. The photovoltaic module of claim 8, wherein the solar cell is selected from one of a crystalline silicon cell, a perovskite cell, or a crystalline silicon/perovskite cell.
  17. 17. The photovoltaic module of claim 8, further comprising a glue film having a refractive index that differs from a refractive index of glass by less than 0.05.

Description

Glass and photovoltaic module comprising same Technical Field The present application relates to a glass, a photovoltaic module including the same, and another photovoltaic module. Background In recent years, photovoltaic technology has been increasingly used. Glass is an important component in solar photovoltaic systems, and is mainly used for covering solar cells, protecting the solar cells and transmitting light energy. Therefore, the glass plays an extremely important role in the photovoltaic power generation module, At present, the transmittance of the ultra-white glass for solar energy is still low, which greatly limits the conversion efficiency between solar energy and electric energy in the photovoltaic industry, so that the development of glass with higher transmittance has great significance for promoting the development of the photovoltaic industry. Disclosure of Invention In view of this, the present application provides a glass, a photovoltaic module including the glass, and another photovoltaic module. Specifically, according to a first aspect of the present application, there is provided a glass consisting of, in mole percent of cations, a combination of one or more of 20% -39% Al 3+, 10% -20% P 5+, 1% -10% Ba 2+, 1% -10% Sr 2+, 1% -20% Ca 2+, 1% -20% Mg 2+, 5% -20% Na +, 1% -10% K +, 0-8% Y 3+、La3+、Gd3+、Lu3+, and 75% -85% F -, 15% -25% O 2-, and in mole percent of anions. In some embodiments, the molar ratio of F - to O 2- is from 3 to 4.5, preferably the molar ratio of F - to O 2- is from 3.5 to 4.5, more preferably the molar ratio of F - to O 2- is from 4 to 4.5. In some embodiments, the sum of the mole percentages of Ba 2+、Sr2+、Ca2+、Mg2+ is 30% -40%, preferably the sum of the mole percentages of Ba 2+、Sr2+ is less than the sum of the mole percentages of Ca 2+、Mg2+. In some embodiments, the glass has a refractive index of 1.42 to 1.45, preferably 1.43 to 1.44. In some embodiments, the glass has a light transmittance of >90%, preferably >92%. In some embodiments, the glass is a tempered glass having a flexural strength of greater than 90MPa, preferably from 90MPa to 160MPa. In the present application, the flexural strength is measured by a four-point method. The glass provided by the application not only has excellent chemical stability such as water-resistant action stability and acid-resistant action stability, thermal expansion coefficient and devitrification resistance, but also has lower refractive index, higher light transmittance and higher strength and hardness. According to a second aspect of the present application there is provided a photovoltaic module comprising a solar cell and a glass according to the first aspect of the present application overlying the solar cell. Based on the above characteristics of the glass provided by the application, the photovoltaic conversion efficiency of the photovoltaic module using the glass is significantly improved compared with that of the ultra-white photovoltaic glass, and in particular, the photovoltaic conversion efficiency can be improved by at least 0.43%, even by 0.64%. According to a third aspect of the present application, there is provided another photovoltaic module comprising a solar cell and a glass covering the solar cell, the glass comprising a fluorophosphate. In some embodiments, the glass has a refractive index of less than 1.45, preferably from 1.38 to 1.45, more preferably from 1.42 to 1.45. In some embodiments, the glass has a light transmittance of >90%, preferably >92%. In some embodiments, the glass is substantially free of elemental silicon. In some embodiments, the glass comprises Al 3+、P5+、Ma2+、Mb+、Mc3+、F- and O 2-, wherein M a2+ is selected from the group consisting of one or more of Ba 2+、Sr2+、Ca2+、Mg2+, M b+ is selected from the group consisting of one or more of Na +、K+, and M c3+ is selected from the group consisting of one or more of Y 3+、La3+、Gd3+、Lu3+. In some embodiments, the molar ratio of F - to O 2- is from 3 to 4.5, preferably from 3.5 to 4.5, more preferably from 4 to 4.5. In some embodiments, M a2+ is a combination of Ba 2+、Sr2+、Ca2+、Mg2+. In some embodiments, M b+ is a combination of Na +、K+. In some embodiments, the solar cell is selected from one of a crystalline silicon cell, a perovskite cell, or a crystalline silicon/perovskite cell. In some embodiments, the photovoltaic module further comprises a glue film having a refractive index that differs from the refractive index of the glass by less than 0.05. In another photovoltaic module provided by the application, compared with the use of the ultrawhite photovoltaic glass, the use of the glass containing the fluorophosphate can remarkably improve the photovoltaic conversion efficiency of the photovoltaic module, and particularly, the photovoltaic conversion efficiency can be improved by at least 0.43% or even 0.64%. Drawings In order to more clearly illustrate the examples of the application or the technical solutions of the prior art, the drawings