The Preparation And Performance Study Of Organic Energetic Semiconductor Bridge

Nowadays, energetic multi-layered organic films have draw amounts of attention from the researchers. In this paper, two kinds of nitro-containing brames were immobiliazed on Silicon(111) wafers through thermal grafting method. In other words, after the formation of a Si-H surface, author transfered it to be a Si-Cl surface through halogen solvents for subsequent fabrication of tethered nitroaromatic functional groups. Then, ATR-FTIR、AFM and XPS were choosed to characterize the functionalized samples. As results show,the H-Si(111) substrates that possess ideal hydrogenated surfaces were firstly acquired and there stretching vibration appeared at 2080 cm-1, meaning that the Si-H bonds are perpendicular to the surface.The staircase structure was still remained, and the triangular corrosion pits were distributed regularly on each staircase. The height of each step is eaqual to single atom height, and the triangular width of 1 μm～2 μm, depth of 20 nm～30 nm.After the chlorination, the staircase structure was still appeared with clearly triangles distributed on each step. In addition, XPS show that the Cl 2s and Cl 2p elements were apparently appeared on Si-Cl surface compared with Si-H brame.Additionally, the binding energy of Si-Cl film appeared at 102 eVwas also visualized in XPS specture.Eventually, AFM and XPS were manipulated to analysis the two kinds of thermally bonded trinitrophenolate and p-nitrophenol samples. Their morphology and element type were tested. AFM indicated that grafting density and homogeneity of Si-B2 were higer than Si-R1 films, inspite of somewhat polymerization of both two films. What’s more, rms roughness of Si-R1 increased dramatically from Silicon of 0.3 nm to ±4 nm, with its corresponding wide feature height distribution (0-20 nm); The depth of Si-B2 is about 10 nm, although its rms roughness is higher than Si-R1 due to little polymerization.High-speed vedio photography show that Si-R1 and Si～B2 films have similar burst in terms of size and burning area, although R1 has a larger geometric constraints. Most notably, the light duration of both films could reach from 66 us to 100 us. In deed, the rapid combustion of nitro-terminated multilayer films dose occurred during the electrical process.