Electron Field Emission from Diamond and Other Carbon Materials after H sub 2, Osub 2, and Cs Treatment

摘要

This letter reports, diamond field emitters, Cs treated, air stable, that emitelectrons at the lowest reported field, <0.2 V/micron. Field emission from B-, Li-, P-, and N-doped diamonds and carbonized polymer was characterized as a function of surface treatment. A treated with an O2 plasma, coated with Cs, heated, and exposed to O2 exhibited increased emission for all samples except for B-doped diamond. The best emission was obtained from N-doped diamond samples, followed by