Curcumin Dye-Sensitized Solar Cell

Solar Energy Materials and Solar Cells, 2001

A method is devised for the deposition of CuSCN on ruthenium bipyridyl dye coated nanocrystalline TiO 2 films from a solution in n-propyl sulphide. The dye-sensitized solid state photovoltaic cell formed was found to yield higher short-circuit photocurrent, open-circuit voltage and efficiency compared to the cells made with CuSCN by other deposition techniques. Factors affecting the stability of the cell are investigated. #

Optical and Quantum Electronics, 2020

Dye-sensitized solar cells are expected to be used as future clean energy. Most of the researchers in the field of the dye-sensitized solar cells use Ruthenium complex as dye. On the other hand, we have proposed the dye-sensitized solar cells using natural dyes, such as dye of red-cabbage and curcumin. In this paper, we use new electrolyte solution for the solar cells using dye of curcumin. As a result, a conversion efficiency of about 1.3% has been obtained (light source: halogen lamp).

The aims of the research to are know the effect of Cu doping into natural dye in increasing the efficiency of DSCC, to determine of the optical and electrical characteristic of natural dye Cu doping. Sandwich structures formed in the sample consisted of working electrode pair Titanium Oxide (TiO 2) and the counter electrode Platina (Pt). Absorbance test is measure by using UV-Visible spectrophotometer Lambda 25, conductivity test by using a two-point probe El Kahfi/I-V Meter, and characterization of current and voltage (I-V) by using a Keithley 2602A. The Cu doping into dye was increasing the efficiency of 71%.

International Journal of Engineering Technologies, IJET, 2016

In a conversion system of pure and non-convectional solar energy to electricity, dye sensitized solar cells (DSSCs) encourage the fabrication of photovoltaic devices providing high conversion efficiency at low cost. The dye as a sensitizer plays a vital role in performance evaluation of DSSCs. Natural dyes (organic dyes) has come to be a worthwhile substitute to the rare and expensive inorganic sensitizers because of its cost effective, extreme availability and biodegradable. Different parts of a plant like fruits, leaves, flowers petals and bark have been tested over the years as sensitizers. The properties, together with some other parameters of these pigments give rise to improve in the operation standard of DSSCs. This review hash-out the history of DSSC with a focus on the recent developments of the natural dyes applications in this specific area with their overall appearance, the various components and the working principle of DSSCs as well as the work done over the years on natural dye based DSSCs.

Annals of West University of Timisoara - Physics

Cuprous oxide with different morphologies (3D hierarchical structure consisting of the micrometer dendritic rods and the porous truncated octahedrons) has been successfully synthesized via a facile one-step hydrothermal method using copper (II) acetate and ethyl cellulose as reactants. The p-type dye-sensitized solar cell based on the micrometer porous structure exhibits approximately 15% increase in JSC and VOC than 3D hierarchical structure. This enhancement could be explained by the high dye loading capacity of this porous structure and lowering the recombination process at the oxide/dye/electrolyte interface.

Solar Energy Materials and Solar Cells, 2005

The charge transport properties of the dye-sensitized solar cells consisting of Ru(dcbpyH 2) 2 (NCS) 2-sensitized nanostructured TiO 2 with either redox electrolyte or CuSCN as hole conductor have been compared. The electron transport time and the electron charge in the TiO 2 varies in a similar way with the incident light intensity for both hole conductors: electron transport becomes faster and electron accumulation increases with increasing light intensity. Electron transport in the CuSCN-based cells is significantly faster than in electrolyte cells under conditions where the accumulated charge is equal. An ultra-thin aluminum oxide layer on the nanocrystalline titanium oxide has a beneficial effect as it reduces the recombination and increases the open-circuit potential.

Copper and nitrogen co-doped and pure TiO2 was prepared through a sol-gel process. The photoanode was prepared by coating of Cu-N-TiO2 on the layer FTO conductive glasses using Rhodamine B dye as sensitizer. Electrolyte I-/I3-redox couple and carbon (graphite) were used as counter electrode. The co-doped electrode sensitized with Rhodamine B dye showed the open circuit voltage (Voc) = 200.0 mV, short circuit current (isc) = 0.0522 mA, Vpp = 99.4 mV and ipp = 0.0198 mA with FF = 0.18 and power conversion efficiency (η) 0.0032% under 60 mWcm-2 light intensity. Both pure and doped semiconductors were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), fourier transform infrared (FTIR) techniques, transmission electron microscopy (TEM) and diffuse reflectance spectra (DRS).

Organic Electronics, 2011

Highly efficient all solid state dye-sensitized solar cells (DSSC) were fabricated by the specific interaction of CuI with the NCS groups of the dye molecules and that of the counter electrodes. The counter electrode containing NCS groups was prepared by coating the PEG solution containing NCS groups. The counter electrode was connected with the NCS groups of the dye molecules by CuI. The specific interaction between the CuI with the NCS groups of the dye molecules and that of the counter electrode could lower the impedance of the interfaces, and facilitate the injection of the hole into the counter electrode to give the highly efficient all solid state DSSC. The specific interaction was investigated by Xray photoelectron spectroscopy. The performance was improved by introducing PEDOT layer between the interface of FTO and the PEG containing NCS groups. The improvements are due to the reduction of the junction resistance across the interface in the presence of interlayer, which result in improved hole injection. The DSSC were stable and exhibited high efficiency (4.2%). They could be manufactured with inexpensive and low quality materials, and the practical use is promising.

Solar Energy Materials and Solar Cells, 2004

Construction of a semiconductor-dye heterostructure of the configuration n-TiO 2 /D 1 /p-CuSCN/D 2 /p-CuSCN/D 3 /p-CuSCN (n-TiO 2 is the nanocrystalline TiO 2 film deposited on conducting glass, p-CuSCN ¼ ultra-thin (B2 nm) layers of Cu(I) thiocyanate, p-CuSCN=thick layer of p-CuSCN , D 1 =Fast Green, D 2 =Rhodamine 6G and D 3 =Acridine Yellow) is described. It is found that this heterojunction generates photovoltaic response to light absorption by all the three dyes. The mechanism involved is suggested to be transfer of electrons to n-TiO 2 and holes to p-CuSCN via tunneling. This technique could be a strategy to broaden the spectral response and enhance the efficiency of dye-sensitized solar cells.

The purpose of this study was to obtain optical properties (absorption spectrum) and electrical properties (photoconductivity) of organic dyes in DSSC performance. optical and electrical properties were tested by using UV-Visible Spectrophotometer and Elkahfi 1601 PC 100 / IV meter, respectively, while Keithley Type 2600A is used for the characterization of DSSC. This study is a great base to explore and investigate the development of DSSC solar cells using natural dyes (organic). Spectra optimal absorption and photoconductivity produced by natural dyes (organic). The results of this study indicate that the absorption spectrum of natural dyes (organic) in the range of 300-500 nm. electrical characteristics (I-V) of the increase in linear dye under illumination. I-V characteristics of DSSC from organically produced natural dyes to color the biggest-mangosteen obtained Voc of 565 mV; JSC = 1.52 A / m2; FF = 0.12; and η_ef is approximately 0.09%, respectively,. The conclusion of this study, natural dyes (organic) can be an attractive alternative as a dye.

Jurnal Fisika dan Aplikasinya, 2021

Dye Sensitized Solar Cell (DSSC) with natural dye from Leunca fruit (Solanum Nigrym L) and Jamblang fruit (Syzygium Cumini L) extract as sensitizer has been created. This DSSC is composed of ZnO doping TiO2 using milling tool for 30 minutes which would be used as photoelectrodes. This study used two natural dyes which are Leunca and Jamblang fruit. The characterizations were performed to examine crystal structure of ZnO-TiO2 with XRD, to measure ZnO-TiO2 particle size with SEM, to examine optical properties from the dye using UV-Vis spectrophotometer, and to run an electrical test to find the efficiency from DSSC. The results indicate that the use of Jamblang fruit as sensitizer is better than Leunca fruit. This is because Jamblang fruit extract has light absorption area on the range of 250-800 nm which is higher absorbance than that of Leunca fruit. In addition, the milling time applied was found to be not long enough to produce semiconductor with smaller crystal size. The electrical test result shows Jamblang fruit based DSSC performance is better than Leunca fruit. The maximum power output values are 4.01 x 10 −8 Watt with the efficiency of 22.57 x 10 −4 % and 2.16 x 10 −7 Watt with efficiency of 6.02 x 10 −4 % when radiated with Halogen lamp and sunlight, respectively. Aside from the fact that the preparation technique is relatively easy, natural dye material can be found abundantly in nature and its price is also cheap, hence this study is very promising. However, several changes are needed to gain better results. The brief of this research is to develop alternative energy from solar energy, so that its use can be maximized as environmentally-friendly energy source.

Dalton Transactions, 2019

The crucial role oftert-butylpyridine and lithium bis(trifluoromethanesulfonyl)imide in the performance of sustainable “full-copper” DSSCs.

2010

The dye-sensitized solar cell (DSSC) has been proven to have a good chance to become a notable competitor for solar cells based on today technology of p-n junction. The principle of operation of DSSC solar cells in comparison with conventional semiconductor solar cells where light absorption and charge carrier transport are done by the semiconductor is different. In DSSC these two tasks are separate. Charge separation is done by photo-induced injection to the conduction band and such created carriers are transported to charge collector. By using dyes which have broad absorption band, the solar cell is capable to harvest large fraction of sunlight. In this paper the basic construction and mode of operation of solar cells based on dyes is described.

Applied Physics Letters, 2005

To improve the efficiency of dye-sensitized solar cells (DSSCs),light absorption properties of organic dye must be tuned to have a maximum response throughout visible and near infra-red spectrum. This work is focused on the study ofDSSC based on the combination of red (Red spinach) and yellow (Turmeric) natural dyes used as sensitizers for semiconductor TiO2 as electron conductor in order to improve the efficiency.Combination of natural dye with optimized choice of the agents indicated improved photovoltaic impacts contrasted with single individual dye sensitization and increased the absorption of solar light and allowed utilization of the photon energy more efficiently.Power conversion efficiency (η %) of natural yellow dye extracted from turmeric (Curcuma longa)was obtained 0.378% and for natural red dye extracted from red spinach (Amaranthusdubius)was 0.134%.The maximum open circuit voltage (VOC= 499.3mV) and the short circuit current-density (JSC= 4.264 mA cm −2) were obtained from DSSC sensitized by the optimum combination of 60% yellow (Turmeric) and 40% red (Red Spinach) and corresponding maximum efficiency (η %) was reached 1.078%. Thus efficiency with combined dyes isabout 2.85 and 8.04 times higher than that of the efficiency ofindividual single yellow and red dyes, respectively.