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- 저자 : Sule Erten-Ela (검색결과 3 건)
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Sule Erten-Ela,Magdalena Marszalek,Serpil Tekoglu,Mustafa Can,Siddik Icli 한국물리학회 2010 Current Applied Physics Vol.10 No.3
We report the synthesis, electrochemical and photovoltaic properties of triphenylamine based novel organic sensitizer, comprising donor, electron-conducting and anchoring group. Different triphenylamines were synthesized as donor unit and connected to cyano-acidic acid acceptor over vinyl group. In this work, we studied on two novel dyes (TPA2, TPA3) by attaching methyl to m-position and diphenylamine to p-position of the basic triphenylamine structure, respectively. All derivatives absorb at visible region of solar spectrum in the range of 350–632 nm. By introducing strong electron injection groups to triphenylamine ring, band gap becomes narrower while EHOMO–ELUMO levels are tuned. All current voltage (I–V)measurements were done under 100 mW/㎠ light intensity and AM 1.5 conditions. TPA3 chromophore with the lowest band gap shows the best cell performance with an efficiency (η) of 4.12%, a short-circuit photocurrent density (Isc) of 8.07 mA/㎠, an open-circuit voltage (Voc) of 714 mV and a fill factor (FF) of 0.72.
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Hybrid solar cells using nanorod zinc oxide electrodes and perylene monoimide–monoanhydride dyes
Sule Erten-Ela,Sadik Cogal,Siddik Icli,Gulsah Turkmen 한국물리학회 2010 Current Applied Physics Vol.10 No.1
Hybrid solar cells have been fabricated using perylene monoimide.monoanhydride dyes with nanorod zinc oxide electrodes as electron transporting layers. We have investigated the influence of the spacer alkyl chain length of perylene monoimide.monoanhydride (PMIMA) dyes on the device performance in hybrid solar cells using nanorod zinc oxide electrodes. Nanorod zinc oxide electrodes with 50. 150 nm of diameter were synthesized in the presence of PEG400 by using microwave heating method. We observed that the dyes with longer and brunched alkyl chains exhibit higher efficiencies in hybrid solar cells. We report the highest efficiency obtained with zinc oxide nanorods under standard conditions for perylene monoimide.monoanhydride derivative with PMIMA_1 that performs 400 mV open circuit voltage, 2.81 mA/cm2 short-circuit current and 0.59% overall conversion efficiency.
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Sule Erten-Ela,Kasim Ocakoglu 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.2
Two ruthenium complexes with carboxyl and sulfonyl groups have been synthesized, [RuII(L1)2(NCS)2]RuIIbis(4,7-diphenyl-1,10-phenanthroline-disulfonic acid disodium salt)-di(thiocyanate) [K313],[RuII(L1)2(dcbpy)] RuII bis(4,7-diphenyl-1,10-phenanthroline-disulfonic acid disodium salt)(4,40-dicarboxy-2,20-bipyridyl) [K314] as photosensitizers. UV–vis, fluorescence emission, AFM and CVmeasurements are also supplied for ruthenium complexes. Photovoltaic properties of dye sensitizednanocrystalline semiconductor solar cells based on Ruthenium complexes which bear carboxyl andsunfonyl groups have been tested under standard AM 1.5 sunlight. Under the standard global AM 1.5solar conditions, K314 and K313-sensitized solar cells demonstrate short circuit photocurrentdensities of 14.92 mA/cm2 and 11.23 mA/cm2 and overall conversion efficiencies of 5.09% and 4.02%,respectively.
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