Cathode with improved work function and method for making the same

A cathode (110) with an improved work function, for use in a lithographic system, such as the SCALPEL„¢ system, which includes a buffer (114) between a substrate (112) and an emissive layer (116), where the buffer alters, randomizes, miniaturizes, and/or isolates the grain structure at a surface of...

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Hauptverfasser: KATSAP, VICTOR, ZHU, WEI, WASKIEWICZ, WARREN K, SUNGHO, JIN
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A cathode (110) with an improved work function, for use in a lithographic system, such as the SCALPEL„¢ system, which includes a buffer (114) between a substrate (112) and an emissive layer (116), where the buffer alters, randomizes, miniaturizes, and/or isolates the grain structure at a surface of the substrate to reduce the grain size, randomize crystal orientation and reduce the rate of crystal growth. The buffer layer may be a solid solution or a multiphase alloy. A method of making the cathode by depositing a buffer between a surface of the substrate and an emissive layer, where the deposited buffer alters, randomizes, miniaturizes, and/or isolates the grain structure at a surface of the substrate to reduce the grain size, randomize crystal orientation and reduce the rate of crystal growth.