Abstract
A quantitative electron tunneling model is constructed to calculate the electron emission from a diamond-metal-vacuum triple junction, including the effects of the field enhancement at the interface of the triple junction, the reduction on the barrier height and the negative electron affinity on the diamond surface. The difference between the emission processes with and without light exposure is also investigated. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4752712]