| 摘要 |
The invention provides a glass plate which, when is used in a compound solar cell, can be provided in excellent balance with high power generation efficiency, high glass transition temperature, specified average coefficient of thermal expansion, meltability upon producing the glass plate, formability, anti-devitrification, and other characteristics. The glass plate is of specified composition. Na amount at a depth of 30nm calculated from a surface thereof is 1.06 times greater than or 2.0 times smaller than Na mount at a depth of 5000nm calculated from the surface thereof, and K amount (atom %) at a depth of 30nm calculated from the surface thereof is 1.1 times greater than or 4.0 times smaller than K amount (atom %) at a depth of 5000nm calculated from the surface thereof. |
