Thin Films and Nanoscience Laboratory, Department of Physics, Jadavpur University, Kolkata 700032, India.
Nanotechnology. 2013 Nov 22;24(46):465601. doi: 10.1088/0957-4484/24/46/465601. Epub 2013 Oct 22.
Organic charge transfer (CT) complexes initiated a growing interest in modern electronic devices owing to their easy processability and unique characteristics. In this work, three-dimensional field emitters comprising metal-organic charge transfer complex nanostructures of AgTCNQ and CuTCNQ (TCNQ, 7,7,8,8-tetracyanoquinodimethane) over flexible fabric substrate are realized. Deliberate control over the reaction parameter during organic solid phase reaction leads to modification in structural parameters of the nanowires (i.e. length, diameter) as well as their arrangement atop the carbon fibers. The optimized arrays of AgTCNQ and CuTCNQ nanowires exhibit excellent field electron emission performance with very low turn-on (1.72 and 2.56 V μm(-1)) and threshold fields (4.21 and 6.33 V μm(-1)) respectively, which are comparable to those of the best organic field emitters reported to date. The underlying conducting carbon cloth with special woven-like geometry not only offers a flexible platform for nanowire growth, but also provides an additional field enhancement to ease the electron emission.
有机电荷转移（CT）配合物由于其易于加工和独特的特性，在现代电子设备中引起了越来越多的关注。在这项工作中，通过在柔性织物基底上实现 AgTCNQ 和 CuTCNQ（TCNQ，7,7,8,8-四氰基对醌二甲烷）的金属-有机电荷转移复合纳米结构，制备了三维场发射器。在有机固相反应过程中对反应参数进行了精心控制，从而改变了纳米线的结构参数（即长度、直径）以及它们在碳纤维上的排列方式。优化的 AgTCNQ 和 CuTCNQ 纳米线阵列表现出优异的场电子发射性能，其开启场（1.72 和 2.56 V μm-1）和阈值场（4.21 和 6.33 V μm-1）都非常低，可与迄今为止报道的最佳有机场发射器相媲美。具有特殊编织状几何形状的底层导电碳布不仅为纳米线的生长提供了一个灵活的平台，而且还提供了额外的场增强，以方便电子发射。
