THEORETICAL-STUDY OF FIELD-EMISSION FROM DIAMOND

被引:111
作者
HUANG, ZH
CUTLER, PH
MISKOVSKY, NM
SULLIVAN, TE
机构
[1] Department of Physics, Pennsylvania State University, University Park
关键词
D O I
10.1063/1.112636
中图分类号
O59 [应用物理学];
学科分类号
摘要
The electron field emission from diamond surfaces is investigated theoretically using a model consisting of the projection of the energy band surfaces in the 〈111〉, 〈110〉, and 〈100〉 emission directions. The effect of the negative electron affinity, the band bending, the image interaction, and surface states is examined in detail. It is found that the conventional theory of electron field emission applied to crystalline diamond cannot explain the measured high-current emission at low fields. We postulate two subbands in the intrinsic band gap, which may be generated by defects or impurities. With reasonable band parameters, the calculated I-V characteristics agree with experimental data. © 1994 American Institute of Physics.
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页码:2562 / 2564
页数:3
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