Efficient solid-state dye-sensitized n-ZnO/D-358 dye/p-CuI solar cell

Kumara, G.R.A.; Tiskumara, J.K.; Ranasinghe, Chandana Sampath Kumara; Rathnayake, I.S.; Wanninayake, W.M.N.M.B.; Jayaweera, E.N.; Bandara, L.R.A.K.; Rajapakse, R.M.G.

doi:10.1016/j.electacta.2013.01.099

Cited by 14 publications

(9 citation statements)

References 17 publications

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“…[67][68][69] Solid electrolytes are based on a completely different working principle: holes transferred from the dye are transported via hopping between the electronic states of the solid electrolyte to the metallic or polymeric counter electrode. Crystalline p-type semiconductors, 70 organic hole-conducting molecules, 71 as well as conductive polymers 72 have been widely studied. [73][74][75] However, the poor intrinsic conductivity, the low electron transfer from the dye molecules, the poor penetration into the mesoporous TiO 2 and the faster recombination phenomena do not allow solid cells to be more efficient than their liquid and quasisolid counterparts.…”

Section: Electrolytes For Dsscs: State Of the Artmentioning

confidence: 99%

Aqueous dye-sensitized solar cells

et al. 2015

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Nowadays, dye-sensitized solar cells (DSSCs) are the most extensively investigated systems for the conversion of solar energy into electricity, particularly for implementation in devices where low cost and good performance are required. Nevertheless, a key aspect is still to be addressed, being considered strongly harmful for a long time, which is the presence of water in the cell, either in the electrolyte or at the electrode/electrolyte interface. Here comes the present review, in the course of which we try our best to address the highly topical role of water in DSSCs, trying to figure out if it is a poisoner or the keyword to success, by means of a thoroughly detailed analysis of all the established phenomena in an aqueous environment. Actually, in the last few years the scientific community has suddenly turned its efforts in the direction of using water as a solvent, as demonstrated by the amount of research articles being published in the literature. Indeed, by means of DSSCs fabricated with water-based electrolytes, reduced costs, non-flammability, reduced volatility and improved environmental compatibility could be easily achieved. As a result, an increasing number of novel electrodes, dyes and electrolyte components are continuously proposed, being highly challenging from the materials science viewpoint and with the golden thread of producing truly water-based DSSCs. If the initial purpose of DSSCs was the construction of an artificial photosynthetic system able to convert solar light into electricity, the use of water as the key component may represent a great step forward towards their widespread diffusion in the market.

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Section: Electrolytes For Dsscs: State Of the Artmentioning

confidence: 99%

Aqueous dye-sensitized solar cells

et al. 2015

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“…The best performance is SC = 2.117 mA/cm 2 , OC = 0.6932 V, ff = 0.7015, and = 1.029%. Kumara et al [32] found that the thickness of TiO 2 and ZnO layers can play the role in conversion efficiency of the photovoltaic cells. When the thickness and, hence, the sheet resistance of the TiO 2 dense layer were increased, the conversion efficiency was gradually increased up to 2.6% at a sheet resistance of 370 Ω (15 m thick) beyond which it decreased.…”

Section: Raman Spectra Raman Spectramentioning

confidence: 99%

ZnTe Semiconductor‐Polymer Gel Composited Electrolyte for Conversion of Solar Energy

Promnopas

Thongtem

2014

Journal of Nanomaterials

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Nanostructured cubic p-type ZnTe for dye sensitized solar cells (DSSCs) was synthesized from 1 : 1 molar ratio of Zn : Te by 600 W and 900 W microwave plasma for 30 min. In this research, their green emissions were detected at the same wavelengths of 563 nm, the energy gap(Eg)at 2.24 eV, and three Raman shifts at 205, 410, and 620 cm−1. The nanocomposited electrolyte of quasisolid state ZnO-DSSCs was in correlation with the increase in theJSC,VOC, fill factor (ff), and efficiency (η) by increasing the wt% of ZnTe-GPE (gel polymer electrolyte) to an optimum value and decreased afterwards. The optimal ZnO-DSSC performance was achieved for 0.20 wt% ZnTe-GPE with the highest photoelectronic energy conversion efficiency at 174.7% with respect to that of the GPE without doping of p-type ZnTe.

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“…However, efficiency remained lower than the wet-type dye-sensitized solar cells (DSCs) and many attempts have been made to enhance the efficiency of DSSCs. The solid-state cell configuration (n-type semiconductor/dye/p-type semiconductor) has the potential of increasing the recombination rate, which reduces efficiency [3,4]. In order to achieve this, the charge recombination reactions must be slower than the charge injection into the conduction band of the semiconductor.…”

Section: Introductionmentioning

confidence: 99%

Donor-π-Conjugated Spacer-Acceptor Dye-Sensitized Solid-State Solar Cell Using CuI as the Hole Collector

Liyanage

Kumarasinghe

Kumara

et al. 2019

International Journal of Photoenergy

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Dye-sensitized solid-state solar cells (DSSCs) replacing the liquid electrolyte with a p-type semiconductor have been extensively examined to solve the practical problems associated with wet-type solar cells. Here, we report the fabrication of a solid-state solar cell using copper iodide (CuI) as the hole conductor and alkyl-functionalized carbazole dye (MK-2) as the sensitizer. A DSSC sensitized with MK-2 showed a solar-to-electrical power conversion efficiency of 3.33% with a Voc of 496 mV and a Jsc of 16.14 mA cm-2 under AM 1.5 simulated sunlight. The long alkyl chains act as a barrier for charge recombination, and the strong accepting and donating abilities of the cyanoacrylic and carbazole groups, respectively, enhance the absorption of light at a longer wavelength, increasing the short-circuit current density. The efficiency recorded in this work is higher than similar DSSCs based on other hole collectors.

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Efficient solid-state dye-sensitized n-ZnO/D-358 dye/p-CuI solar cell

Cited by 14 publications

References 17 publications

Aqueous dye-sensitized solar cells

Aqueous dye-sensitized solar cells

ZnTe Semiconductor‐Polymer Gel Composited Electrolyte for Conversion of Solar Energy

Donor-π-Conjugated Spacer-Acceptor Dye-Sensitized Solid-State Solar Cell Using CuI as the Hole Collector

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