- 作者: 王忠茂 ; 林笏稜 ; 王文英 等
- 作者服務機構: 台灣師範大學化學系
- 中文摘要: Substituted dicyanoanthraquinone diimines (DCNAQI) and their related copper complexes, Cu(DCNAQI), have been synthesized and characterized. Most Cu(DCNAQI) complexes possess an activation energy 80 to 400meV and strongly absorb in the IR range. Electrochemical investigations with polycrystalline electrodes as thin films reveal that Cu(DCNAQI) behaves as an n-type semiconductor. Under bandgap excitation (4000/cm), the photoconductance measured with these Cu(DCNAQI) electrodes was greatly promoted under nitrogen, but very sensitive to oxygen or hydrogen. When the conductance difference, .DELTA..sigma./.sigma./sub dark/=(.sigma./sub light/-.sigma./sub dark/)/.sigma./sub dark/, was plotted vs. the partial pressure of the target molecule , a nearly linear relationship was observed. Among Cu(DCNAQI), Cu(.beta.-methyl-DCNAQI) gave the greatest sensitivity for detection of hydrogen, but Cu(.alpha.,.alpha.'-dichloro- DCNAQI) appeared most sensitive toward oxygen. This remarkable relationship is likely due to retardation of the mobility of electron or hole by interaction with oxygen or hydrogen at the Cu(DCNAQI) electrode surface; a solid-state oxygen/hydrogen sensing device based on these organic semiconductors is proposed.
- 英文摘要: --
- 中文關鍵字: Copper Dicyanoanthraquinone Diimine; Gas Sensor; Semiconductor; Organic Charge-Transfer Complex
- 英文關鍵字: 銅雙氰□二亞胺;氣體感應器;半導體;有機電荷轉移錯合物