| 摘要 |
A discharge lamp encompassing a sealed-off tube filled with a discharge gas and a discharge electrode provided in the sealed-off tube. The discharge electrode embraces a supporting base and an electron-emitting layer formed of a wide bandgap semiconductor and provided on the supporting base, implemented by a plurality of protrusions, at least part of surfaces of the protrusions are unseen from a perpendicular direction to thereof above a top surface of the electron-emitting layer, dangling bonds of the wide bandgap semiconductor at the surfaces are terminated with hydrogen atoms.
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