Wide band-gap semi-conducting compounds are very attractive in recent years because of the intense commercial interest in developing practical short wavelength semiconductor diode lasers for the huge market needs. ZnO...Wide band-gap semi-conducting compounds are very attractive in recent years because of the intense commercial interest in developing practical short wavelength semiconductor diode lasers for the huge market needs. ZnO has a wide band gap (3. 37 eV) and a large binding energy (60 meV) that allows efficient UV emission from excitation and makes it suitable for UV laser-emitting devices. Indium-doped ZnO (ZnO:In) films have been investigated by many researchers. It has lower electrical conductivity and bet-展开更多
To sensitize polyaniline with dyes by electrochemical polymerization, HClO 4 is employed as the dopant and oxidant, and the polyaniline with different sensitive properties is synthesized. The effect of sensitized emer...To sensitize polyaniline with dyes by electrochemical polymerization, HClO 4 is employed as the dopant and oxidant, and the polyaniline with different sensitive properties is synthesized. The effect of sensitized emeraldine salt on the absorption spectrum is discussed in details. The maximum conductivity of sensitized films reaches 1.22 S/cm, and investigation on dye sensitizing of the polymer reveals that C.I. Direct Blue 71, C.I. Direct Blue 84, C.I. Direct Black 19 and CuPc-(COOH) 4 may enhance the photoconductivity of polyaniline greatly.展开更多
文摘Wide band-gap semi-conducting compounds are very attractive in recent years because of the intense commercial interest in developing practical short wavelength semiconductor diode lasers for the huge market needs. ZnO has a wide band gap (3. 37 eV) and a large binding energy (60 meV) that allows efficient UV emission from excitation and makes it suitable for UV laser-emitting devices. Indium-doped ZnO (ZnO:In) films have been investigated by many researchers. It has lower electrical conductivity and bet-
文摘To sensitize polyaniline with dyes by electrochemical polymerization, HClO 4 is employed as the dopant and oxidant, and the polyaniline with different sensitive properties is synthesized. The effect of sensitized emeraldine salt on the absorption spectrum is discussed in details. The maximum conductivity of sensitized films reaches 1.22 S/cm, and investigation on dye sensitizing of the polymer reveals that C.I. Direct Blue 71, C.I. Direct Blue 84, C.I. Direct Black 19 and CuPc-(COOH) 4 may enhance the photoconductivity of polyaniline greatly.