本文選題：復(fù)合材料 + 碳納米管��； 參考：《材料研究學(xué)報(bào)》2017年07期

【摘要】：降低與金屬之間的接觸電阻是碳納米管在微納電子領(lǐng)域獲得應(yīng)用的前提,摻雜金納米粒子可有效降低碳納米管的接觸電阻。本文采用高溫焙燒在碳納米管表面構(gòu)造缺陷和親水基團(tuán),然后將碳納米管在氯金酸水溶液中超聲浸泡以吸附氯金酸,再在氫氣氣氛下加熱還原氯金酸為金。掃描電子顯微(SEM)圖片表明碳納米管被成功地?fù)诫s了金納米粒子,X射線能量散射譜(EDS)和X射線光電子譜(XPS)表明金是唯一摻雜在碳納米管上的粒子。摻雜后碳納米管的拉曼光譜中G帶波數(shù)降低說(shuō)明對(duì)碳納米管摻雜金為N型摻雜。N型摻雜劑將電子轉(zhuǎn)移給鄰近的碳原子,使碳納米管中的電子數(shù)量增加,進(jìn)而增強(qiáng)了碳納米管的導(dǎo)電性。利用介電電泳法將碳納米管組裝到一對(duì)金電極之間,并使用精密電感電容電阻(LCR)測(cè)試儀實(shí)時(shí)測(cè)量。結(jié)果表明碳納米管與金電極之間的接觸電阻較摻雜前得到了有效改善,電阻值最大可降低近50%。
[Abstract]:Reducing the contact resistance with metals is the prerequisite for the application of carbon nanotubes in the field of micro-nano electronics. Gold doped nanoparticles can effectively reduce the contact resistance of carbon nanotubes. In this paper, defects and hydrophilic groups on the surface of carbon nanotubes were calcined at high temperature. Then the carbon nanotubes were immersed in chlorgold acid solution in ultrasonic to adsorb chlorogold acid, and then heated to reduce the chlorgold acid to gold in hydrogen atmosphere. Scanning electron microscopy (SEM) images show that carbon nanotubes are successfully doped with gold nanoparticles (EDS) and X-ray photoelectron spectroscopy (XPSS), indicating that gold is the only particle doped on carbon nanotubes. The decrease of G-band number in the Raman spectra of the doped carbon nanotubes indicates that the electrons in the carbon nanotubes are transferred to the adjacent carbon atoms by the N-type doped gold doping agent, which increases the number of electrons in the carbon nanotubes. Furthermore, the conductivity of carbon nanotubes is enhanced. Carbon nanotubes (CNTs) were assembled between a pair of gold electrodes by dielectric electrophoretic method, and real-time measurement was carried out by using a precise inductance capacitance resistance (LCR) tester. The results show that the contact resistance between the carbon nanotubes and the gold electrode is improved effectively, and the maximum resistance value can be reduced by nearly 50%.
【作者單位】： 華北理工大學(xué)機(jī)械工程學(xué)院;華北理工大學(xué)理學(xué)院;華北理工大學(xué)材料科學(xué)與工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(51172062,51472074) 華北理工大學(xué)研究生創(chuàng)新項(xiàng)目(2016S14)~~
【分類號(hào)】：TQ127.11

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