TITLE

Electrical bistability of copper (I) sulfide nanocrystals blending with a semiconducting polymer

AUTHOR(S)
Aiwei Tang; Feng Teng; Lei Qian; Yanbing Hou; Yongsheng Wang
PUB. DATE
October 2009
SOURCE
Applied Physics Letters;10/5/2009, Vol. 95 Issue 14, p143115
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Electrically bistable devices were fabricated based on blends of n-dodecanethiol capped copper (I) sulfide (Cu2S) nanocrystals and a semiconducting polymer using a simple spin-coating method. Reproducible electrical bistability and negative differential resistance effects were observed in current-voltage characteristics. A large ON/OFF current ratio of 104 at negative voltages could be obtained by applying different amplitude of sweeping voltages and varying the mass ratios of Cu2S nanocrystals to polymer. The observed conductance switching was speculated to be resulted from electric-filed-induced charge transfer between the nanocrystals and polymer, and negative differential resistance behavior could be attributed to the charge trapping in the nanocrystals.
ACCESSION #
44539713

 

Related Articles

  • Blue light emitting diodes based on fluorescent CdSe/ZnS nanocrystals. Rizzo, Aurora; Li, Yanqin; Kudera, Stefan; Della Sala, Fabio; Zanella, Marco; Parak, Wolfgang J.; Cingolani, Roberto; Manna, Liberato; Gigli, Giuseppe // Applied Physics Letters;1/29/2007, Vol. 90 Issue 5, p051106 

    The authors report on the blue electroluminescence from CdSe/ZnS core/shell nanocrystals prepared from ultrasmall, magic size CdSe clusters that have a diameter of less than 2 nm. The light emitting device consists of an active layer of nanocrystals blended with 4,4′,N,N′-...

  • Observation of optical bistability in a ZnO powder random medium. Fujiwara, Hideki; Sasaki, Keiji // Applied Physics Letters;8/14/2006, Vol. 89 Issue 7, p071115 

    Optical bistability has been observed in photoluminescence from a ZnO powder random medium. The emission spectra and the excitation intensity dependence of 420 nm emission clearly exhibit the existence of bistable steady states with changing excitation intensity.

  • Structural and Optical Properties of Li+: PVP & Ag+: PVP Polymer Films. Sivaiah, Kothapalle; Kumar, Koramala Naveen; Naresh, V.; Buddhudu, Srinivasa // Materials Sciences & Applications;Nov2011, Vol. 2 Issue 11, p1688 

    PVP polymers containing Li+ or Ag+ Ions have been synthesized in good stability and transparency by using the solution casting method. Their structural, optical, thermal and electrical properties have been investigated from the measurement of XRD, FTIR, SEM, EDAX, optical absorption spectra,...

  • Direct infrared and visible absorption spectroscopy of stoichiometric and nonstoichiometric clusters of indium phosphide. Rinnen, K.-D.; Kolenbrander, K. D.; DeSantolo, A. M.; Mandich, M. L. // Journal of Chemical Physics;3/15/1992, Vol. 96 Issue 6, p4088 

    Resonant two-color and one-color photodissociation spectroscopy is performed on neutral InxPy clusters with x+y=5 to 14 atoms. Absorption spectra of 29 different InxPy clusters are obtained for excitation energies between 0.84 and 1.84 eV. The absorption behavior is qualitatively similar for all...

  • Hydrostatic pressure dependence of the exponential optical absorption in CdInGaS4. Toyoda, T.; Nakanishi, H.; Endo, S.; Irie, T. // Journal of Applied Physics;1/1/1987, Vol. 61 Issue 1, p434 

    Analyzes the optical-absorption spectra in the semiconductor CdInGaS[sub4] at various hydrostatic pressures. Variation in the absorption coefficients with respect to photon energy; Relationship between the steepness of the absorption edge and the inverse of hydrostatic pressure.

  • Optical bistability of a layered semiconductor in the exciton absorption region. Zenkova, K. Yu.; Kramar, V. M.; Kramar, N. K.; Derevyanchuk, A. V. // Optics & Spectroscopy;Nov2006, Vol. 101 Issue 5, p731 

    The effect of specific features of the exciton and phonon spectra of layered semiconductors on the conditions of realization of optical bistability in the exciton absorption region has been theoretically investigated by the Green’s function method. By the example of the 2 H polytype of...

  • Optical properties of colloidal InGaP/ZnS core/shell nanocrystals. Joshi, Abhishek; Manasreh, M. O.; Davis, E. A.; Weaver, B. D. // Applied Physics Letters;9/11/2006, Vol. 89 Issue 11, p111907 

    The energy band gap (Eg) of colloidal InGaP/ZnS core/shell nanocrystals is investigated by using the optical absorption and the photoluminescence techniques. While the photoluminescence spectra exhibit a strong emission, the optical absorption spectra show a very weak excitonic absorption. From...

  • Stabilized High-Temperature Hexagonal Phase in Copper Halide Nanocrystals. Akopyan, I. Kh.; Gaǐsin, V. A.; Loginov, D. K.; Novikov, B. V.; Tsagan-Manzhiev, A.; Vasil'ev, M. I.; Golubkov, V. V. // Physics of the Solid State;Jul2005, Vol. 47 Issue 7, p1372 

    Low-temperature (T = 4.2–77 K) absorption spectra of CuCl and CuBr nanocrystals in photochromic glass matrixes are studied. A fine structure of exciton absorption bands (Z3 band for CuCl and Z12 band for CuBr) is discovered and studied as a function of nanocrystal size. It is suggested...

  • Composition effects on quantum dot-based resonance energy transfer. Sadhu, Suparna; Patra, Amitava // Applied Physics Letters;11/3/2008, Vol. 93 Issue 18, p183104 

    The effect of composition on resonance energy transfer between CdxZn1-xS quantum dot (donor) and Nile red dye (acceptor) is studied by steady state and time-resolved spectroscopy. The energy transfer efficiency varies from 14% to 47% with change in the composition from Cd0.31Zn0.69S to...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics