用人工神经网络预测场发射开启电场

１　引言由于金刚石薄膜具有高硬度、高熔点、热导率大、化学稳定性好、负电子亲合势等特别优异的性质，对其场发射特性的研究引起了人们极大的关注，目前，关于金刚石薄膜场发射特性的研究已有很多报道，金刚石薄膜不仅具有极低的场发射开启电场，而且，具有很高的场发射电流密度，因而被认为是最理想的场发射冷阴极材料，近年来成为真空微电子学领域的研究热点，并已成功地应用于场发射平板显示器．在薄膜场发射的应用中往往?.. 关键词：

Neural Networks Models on Threshold Electric Field of Field Emission

This article uses the model of BP neural networks　proposes the forecasting model of neural networks in combination with the characteristics of field emission co ld cathode　and applies the data of threshold electric field of diamond thin film to test.The results show that the relative error of the model is within 6\^6% a nd the model possesses good forecast characteristics through simulation and imi tation.