TITLE

Varying polymer crystallinity in nanofiber poly(3-alkylthiophene): PCBM solar cells: Influence on charge-transfer state energy and open-circuit voltage

AUTHOR(S)
Vandewal, Koen; Oosterbaan, Wibren D.; Bertho, Sabine; Vrindts, Veerle; Gadisa, Abay; Lutsen, Laurence; Vanderzande, Dirk; Manca, Jean V.
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p123303
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The effect of poly(3-alkylthiophene) (P3AT) crystallinity in (nanofiber P3AT):PCBM photovoltaic devices on the energy of the charge-transfer state (ECT) and on the open-circuit voltage (Voc) is investigated for poly(3-butythiophene), poly(3-pentylthiophene) and poly(3-hexylhiophene). P3AT crystallinity, expressed as the crystalline nanofiber mass fraction f to the total P3AT mass in the spin-coating dispersion, is varied between ∼0.1 and ∼0.9 by temperature control. ECT, as obtained by Fourier-transform photocurrent spectroscopy decreased with f as ECT=ECT0-0.2f eV. Alkyl side-chain length only influences ECT0. Voc relates to ECT as Voc=ECT/q-0.6 V.
ACCESSION #
44374765

 

Related Articles

  • Preparation, Spectroscopy, Physicochemical Properties and X-ray Structure Analysis of 3,4,5-Trimethoxy N-(2-hydroxybenzylidene) aniline. Guillaume, Kodjo Charles; Herve, Zabri; Anoubile, Benie; Jacques, Estienne // E-Journal of Chemistry;2009, Vol. 6 Issue 4, p1103 

    3,4,5-Trimethoxy N-(salicylidene) aniline was synthesized and characterized by IR spectroscopy, ¹H NMR and x-ray single crystal analysis. UV-visible spectroscopy was used for physicochemical tests. X-ray data reveals that the crystalline network cohesion of this compound is essentially...

  • Dynamic disorder in methylammoniumtrihalogenoplumbates (II) observed by millimeter-wave spectroscopy. Poglitsch, A.; Weber, D. // Journal of Chemical Physics;12/1/1987, Vol. 87 Issue 11, p6373 

    The temperature-dependent structure of crystalline methylammoniumtrihalogenoplumbates (II)—CH3NH+3PbX-3 (X=Cl, Br, I)—as determined by x-ray diffraction, is compared with measurements of the temperature-dependent complex permittivity at frequencies of 50–150 GHz. The...

  • Disordered structure and the shape of nanoparticles of cadmium sulfide CdS. Vorokh, A. S.; Rempel', A. A. // Doklady Physics;Apr2007, Vol. 52 Issue 4, p200 

    The article presents an analysis on the effect of the atomic structure of cadmium sulfide nanoparticles and the aspect ratio of nanoparticle sizes on the shape of the diffraction pattern. The analysis produced basic interpretations of these diffraction spectra characteristic of the cadmium...

  • STUDIES ON NANO-CRYSTALLINE PROPERTIES OF CHEMICALLY DEPOSITED Pr DOPED CdS FILMS. Deshmukh, Kusumanjali; Bhushan, S.; Mukherjee, M. // Chalcogenide Letters;Jan2010, Vol. 7 Issue 1, p11 

    Results of SEM, XRD, optical absorption spectra and photoluminescence(PL) emission spectra are presented for chemically deposited CdS:NaF,Pr nanocrystalline films at two volumes of thioglycerol with methanol(TGM) as capping agent. While the SEM studies show presence of needle type structure...

  • Spectroscopic Analysis of NIR-Dye Sensitization in Bulk Heterojunction Polymer Solar Cells. Ito, Shinzaburo; Ohkita, Hideo; Benten, Hiroaki; Honda, Satoshi // AMBIO - A Journal of the Human Environment;Mar2012, Vol. 41, p132 

    The photovoltaic conversion efficiency for near-infrared (NIR) sunlight is improved successfully by dye sensitization of bulk heterojunction polymer solar cells, in which the active layer was prepared by a ternary blend of poly(3-hexylthiophene), a fullerene derivative...

  • Dose dependence of the radiothermoluminescence intensity of polyethylene crystalline regions. Aulov, V.; Kuchkina, I.; Ozerin, A. // High Energy Chemistry;Nov2012, Vol. 46 Issue 6, p354 

    The dose dependence for the intensity of all radiothermoluminescence peaks of polyethylene crystalline regions has been studied in the dose ( D) range of 1.3-30 kGy. The initial portion of the dose dependence curve at doses below 5 kGy has the same pattern for all the peaks; the first derivative...

  • Electromechanical instability in semicrystalline polymers. Xuanhe Zhao; Zhigang Suo // Applied Physics Letters;7/20/2009, Vol. 95 Issue 3, p031904 

    When a layer of a semicrystalline polymer is subject to a tensile force in its plane and a voltage through its thickness, the deformation of the layer is initially homogeneous, but it then localizes. The electromechanical instability sets in when the force and the voltage reach critical...

  • Efficient heterojunction solar cells on p-type crystal silicon wafers. Qi Wang; Page, M. R.; Iwaniczko, E.; Yueqin Xu; Roybal, L.; Bauer, R.; To, B.; Yuan, H.-C.; Duda, A.; Hasoon, F.; Yan, Y. F.; Levi, D.; Meier, D.; Branz, Howard M.; Wang, T. H. // Applied Physics Letters;1/4/2010, Vol. 96 Issue 1, p013507 

    Efficient crystalline silicon heterojunction solar cells are fabricated on p-type wafers using amorphous silicon emitter and back contact layers. The independently confirmed AM1.5 conversion efficiencies are 19.3% on a float-zone wafer and 18.8% on a Czochralski wafer; conversion efficiencies...

  • Efficient broad-spectrum parallel tandem organic solar cells based on the highly crystalline chloroaluminum phthalocyanine films as the planar layer. Chen, Weichao; Qiao, Xiaolan; Yang, Jianbing; Yu, Bo; Yan, Donghang // Applied Physics Letters;3/26/2012, Vol. 100 Issue 13, p133302 

    Efficient parallel tandem organic solar cells are demonstrated by using the highly crystalline chloroaluminum phthalocyanine (AlClPc) films as the planar layer. Their broad photoresponse from 400-900 nm is contributed to the strong near-infrared absorption of the AlClPc films and the good...

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