Photovoltaic and photophysical properties of a novel bis-3-hexylthiophelle substituted quinoxaline derivative

2008-09-01
GÜNEŞ, Serap
Baran, Derya
Günbaş, Emrullah Görkem
Oezyurt, Funda
Fuchsbauer, Anita
Sariciftci, Niyazi Serdar
Toppare, Levent Kamil
We report on the photophysical properties and photovoltaic performance of a polythiophene derivative, poly-2,3-bis(4-tert-butylphenyl)-5,8-bis(4-hexylthiophen-2-yl)quinoxaline(PHTQ) as an electron donor in bulk heterojunction Solar Cells blended with the acceptor 1-(3-met hoxycarbonyl)propyl-1-phenyl-[6,6]-methanofullerence (PCBM). Devices were composed of PHTQ and varying amounts of PCBM (1:1, 1:2, 1:3, 1:4 w-w ratio). The components were spin cast from ortho-dichlorobenzene (ODCB) and characterized by measuring current-voltage characteristics under simulated AM 1.5 conditions. Efficiencies up to 0.3% have been reached. Incident photon to current efficiency (IPCE) is reported and the nanoscale morphology was investigated with atomic force microscopy (AFM). Photoinduced absorption spectroscopy confirms the photoinduced charge transfer in such donor acceptor blends.
SOLAR ENERGY MATERIALS AND SOLAR CELLS

Suggestions

Experimental insight into the performance characteristics of Ni-mesh semiconductor photo-electrochemical cells
Bayer, I; Eroğlu, İnci; Turker, L (Elsevier BV, 2000-04-15)
The performance characteristics of two photo-electrochemical cells with different cell configurations were investigated at 25 degrees C and within the illumination range of 70-100 W/m(2). These cells included a jacketed single cell (JSC) and a jacketed two-compartment cell (JTC). Ni-mesh was used as a counter electrode and as a backing material for semiconductor electrodes. Semiconductor electrodes were prepared by silk-screen painting technique using TiO2, WO3, PbO, Sb2S3, ZnO, Al2O3 or CuO powder mixed wi...
Relative Photon-to-Carrier Efficiencies of Alternating Nanolayers of Zinc Phthalocyanine and C-60 Films Assessed by Time-Resolved Terahertz Spectroscopy
Esentürk, Okan; Lane, Paul A.; Heilweil, Edwin J. (American Chemical Society (ACS), 2009-10-29)
Multilayer and 1:1 blended films of zinc phthalocyanine (ZnPc) and buckminsterfullerene (C-60) were investigated as model active layers for solar cells by time-resolved terahertz spectroscopy (TRTS). Relative photon-to-carrier efficiencies were determined from ultrafast decay dynamics of photogenerated carriers using 400 and 800 nm excitation for delay times up to 0.5 ns. The findings are in good agreement with reported solar-cell device measurements, and the results exhibit a near linear increase of the re...
Refractive index, static dielectric constant, energy band gap and oscillator parameters of Ga2SeS single crystals
Qasrawi, A. F.; Hasanlı, Nızamı (Wiley, 2007-09-01)
The optical properties of Bridgman method grown Ga2SeS crystals have been investigated by means of room-temperature transmittance and reflectance spectral analysis. The optical data have revealed direct and indirect allowed transition band gaps of 2.49 and 2.10 eV, respectively. The room-temperature refractive index, which was calculated from the reflectance and transmittance data, allowed the identification of the dispersion and oscillator energies, static dielectric constant and static refractive index as...
Paper Based Glucose Biosensor Using Graphene Modified with a Conducting Polymer and Gold Nanoparticles
GOKOGLAN, Tugba Ceren; KESİK, Melis; SOYLEMEZ, Saniye; YÜKSEL, Recep; Ünalan, Hüsnü Emrah; Toppare, Levent Kamil (The Electrochemical Society, 2017-01-01)
In this work a novel approach was reported for glucose detection using disposable paper based electrodes consisting graphene modified with a conducting polymer, glucose oxidase (GOx) and gold nanoparticles. For the first time, a conducting polymer; poly(9,9-di-(2-ethylhexyl)-fluorenyl-2,7-diyl)-end capped with 2,5-diphenyl-1,2,4-oxadiazole (PFLO) was spread over graphene coated papers and used as a matrix for glucose detection. To finalize the desired biosensor, the enzyme GOx was immobilized with gold nano...
PARTIAL MOLAR PROPERTIES OF MGCL2 IN MGCL2-KCL-CACL2 MELTS
ZHU, J; Karakaya, İshak; THOMPSON, WT (The Electrochemical Society, 1988-01-01)
To further the understanding of electrolytes of value in industrial magnesium electrolysis, the reversible emf for the formation of in fused salts containing and was studied. The data made possible the calculation of thermodynamic solution properties which were used with other data to construct features of the ternary phase diagram. The multiple discrete complex anion (MDCA) model was tested against the thermodynamic findings from the present study. Reasonable agreement was obtained between the experimen...
Citation Formats
S. GÜNEŞ et al., “Photovoltaic and photophysical properties of a novel bis-3-hexylthiophelle substituted quinoxaline derivative,” SOLAR ENERGY MATERIALS AND SOLAR CELLS, pp. 1162–1169, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/45927.