scholarly journals Influence of TiO2Nanocrystals Fabricating Dye-Sensitized Solar Cell on the Absorption Spectra of N719 Sensitizer

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Puhong Wen ◽  
Yinfeng Han ◽  
Weixing Zhao
Keyword(s):  
Solar Cell ◽  
Absorption Spectra ◽  
Red Shift ◽  
Dye Sensitized Solar Cell ◽  
Utilization Rate ◽  
Visible Absorption ◽  
Dye Sensitized ◽  
Ligand Charge Transfer ◽  
Charge Transfer Transitions ◽  
Mlct Band

The absorption spectra of N719 sensitizer anchored on the films prepared by TiO2nanocrystals with different morphology and size were investigated for improving the performance of dye-sensitized solar cell (DSC). We find that the morphology and size of TiO2nanocrystals can affect the UV-vis and FT-IR spectra of the sensitizer anchored on their surfaces. In particular, the low-energy metal-to-ligand charge-transfer transitions (MLCT) band in the visible absorption spectra of N719 is strongly affected, and locations of these MLCT bands revealed larger differences. The results indicate that there is a red shift of MLCT band in the spectra obtained by using TiO2nanocrystals with long morphology and large size compared to that in solution. And it produced a larger red-shift on the MLCT band after TiO2nanocrystals with small size mixed with some long nanocrystals. Accordingly, the utilization rate to visible light is increased. This is a reason why the DSC prepared by using such film as a photoelectrode has better performance than before mixing.

scholarly journals Areca catechu as photovoltaic sensitizer for dye-sensitized solar cell (DSSC)

2020 ◽  
Vol 10 (3) ◽  
pp. 5636-5639
Keyword(s):  
Solar Cell ◽  
Fourier Transforms ◽  
Low Cost ◽  
Natural Dye ◽  
Dye Sensitized Solar Cell ◽  
Light Quantum ◽  
Palm Tree ◽  
Visible Absorption ◽  
Dye Sensitized ◽  
Areca Catechu

Dye-Sensitized Solar Cell (DSSC) becomes more and more interesting since a huge variety of dyes included. The natural dyes can be used as light-harvesting elements which provide the charge carriers. This contribution research on the possibility of using natural dye Areca catechu from a local Malaysian Palm tree, namely Pinang fruit, extracted by using Acetonitrile as an extracted solvent for DSSC application. This study focuses on the properties of natural dye from Areca catechu, extracted with highly acidic media. Ultraviolet-visible absorption spectroscopy (UV-Vis), Fourier Transforms Infrared (FTIR), and Photoluminescence spectroscopy (PL) have been investigated for characterized dye. The natural dye extracted from Areca catechu has interesting properties due to the high degree of molecule conjugation. This dye is capable of absorbing light quantum, at low and high energies ranging from the infrared to the Ultraviolet (UV) region. The presence of natural dye in Areca catechu crust was reported by both UV-Vis and FTIR. While the intensity of Photoluminescence emissions reported a bandgap of 1.85 eV. Areca catechu as a natural dye for DSSC sensitization, promising to achieve high cell performance, low-cost production, and non-toxicity for future applications in dye-sensitized solar cell devices.

A Simplest, Cheapest and Most Efficienct Technique to Enhance the Performance of Solid State Dye-Sensitized Solar Cell: Deposition of Purple Seaweed as a Photosensitizer

2020 ◽  
Vol 301 ◽  
pp. 160-166
Author(s):  
Salmah Mohd Ghazali ◽  
Hasiah Salleh ◽  
Ahmad Nazri Dagang ◽  
Nik Aziz Nik Ali ◽  
Nurhayati Ishak ◽  
...  
Keyword(s):  
Solar Cell ◽  
Solid State ◽  
Solar Spectrum ◽  
Dip Coating ◽  
Natural Dyes ◽  
Dye Sensitized Solar Cell ◽  
Visible Absorption ◽  
Dye Sensitized ◽  
Wide Range ◽  
Coating Method

Solid state dye-sensitized solar cell (ss-DSSC) was developed to overcome the problem arise from electrolyte leakage in liquid state dye-sensitized solar cell. This work focused on the fabrication of ss-DSSC based on inorganic semiconductor of titania and organic conducting polymer of poly (3-hexylthiophene) (P3HT) and natural dyes from purple seaweed (PS dyes) via electrochemical, spin coating and dip coating method, respectively. The absorption spectrum and functional group of PS dyes were investigated using UV-Visible absorption spectroscopy and Fourier Transform Infrared (FTIR) spectroscopy; respectively. Meanwhile, the effect of immersion time of PS dyes on performance of the device was studied via current density-voltage (J-V) characteristic. PS dye was absorbed in a wide range of solar spectrum in visible and near-IR region by chlorophyll a, phycocyanin and zeaxanthin pigments exists in the PS dyes. The present of carboxylic groups in PS dyes which bound to P3HT and formed P3HT-COOH enable the linkage to TiO2 surface which helps in the transfer of electrons from natural dyes to the conduction band of TiO2 film. The highest efficiency obtained was 1.44% at 10 minutes time of immersion. This concludes that PS dyes was a good photosensitizer and can be applied in ss-DSSC.

Study of Different TiO2 Electrode Structures on Dye-Sensitized Solar Cell

2008 ◽  
Vol 368-372 ◽  
pp. 1716-1719 ◽  
Author(s):  
Teen Hang Meen ◽  
Chien Jung Huang ◽  
Yin Wei Chen ◽  
Liang Wen Ji ◽  
Chien Chen Diao ◽  
...  
Keyword(s):  
Solar Cell ◽  
Tio2 Film ◽  
Anatase Phase ◽  
Sol Gel ◽  
Nano Particles ◽  
Dye Sensitized Solar Cell ◽  
Tio2 Electrode ◽  
Film Electrode ◽  
Visible Absorption ◽  
Dye Sensitized

In this research, applications of different TiO2 electrode structures on Dye-Sensitized Solar Cell were investigated. The different TiO2 electrode structures include: (1) synthesis of TiO2 nano-particles and TiO2 film electrode by sol-gel and spin-coating method; (2) fabrication of the TiO2 film electrode by RF Sputtering; (3) fabrication of the rod TiO2 electrode by photo lithography. X-ray diffraction patterns show that the best sintering temperature of nano-TiO2 thin film is 500oC, at which TiO2 anatase phase forms best and the smallest particle-size (8-10 nm) can be obtained. Ultraviolet-visible absorption spectra reveal that the rod TiO2 electrode with TCPP sensitizer adsorbed on has the best optical absorption from 400 nm to 700 nm. The results of current-voltage analyses reveal that the solar cell with rod TiO2 electrode has higher conversion efficiency than the others. This result also provides clear evidence for the contact area between TiO2 electrode and TCPP sensitizer plays an important role on the efficiency of dye-sensitized solar cell.

scholarly journals Natural Deys from Fruit Waste as a Sensitizer for Dye Sensitized Solar Cell (DSSC)

2017 ◽  
Vol 1 (1) ◽  
pp. 29
Author(s):  
I Nyoman Setiawan ◽  
Ida Ayu Dwi Giriantari ◽  
Wayan Gede Ariastina ◽  
Ida Bagus Alit Swamardika ◽  
Agus Selamet Duniaji ◽  
...  
Keyword(s):  
Solar Cell ◽  
Absorption Spectra ◽  
Natural Dye ◽  
Production Costs ◽  
Dye Sensitized Solar Cell ◽  
Fruit Peel ◽  
Dye Sensitizer ◽  
Dye Sensitized ◽  
Dragon Fruit ◽  
Fruit Waste

Dye-sensitized solar cell (DSSC) is one of the potential candidates for the next generation solar cells. One of the most attractive features of the DSSC is the low production costs. The utilization of natural dyes is a new area for investigation due to their unique capability to absorb photons from natural sunlight or artificial light and convert it into electric current. The purpose of this study is to determine the potential of natural dye from red dragon fruit waste as a dye sensitizer. Red dragon fruit peel is initially extracted using methanol and the solution absorption spectra then is characterized using UV-Vis spectrophotometer. The absorption spectra is measured within a wavelength range of 400-800 nm. The characterization results show that the maximum absorption spectrum is at a wavelength of 446 nm. The natural dye solution then is used to immerse Fluorine Tin Oxide (FTO) coated with titanium dioxide (TiO2). The glass FTO is immersed in the dye solution for 24 hours. DSSC then is prepared by sandwiching the working electrode and counter electrode. An electrolyte solution is used to fill the interface between the two electrodes. The current and voltage (I-V) characteristics of DSSC is finally measured using amperemeter and voltmeter. The results indicated that the natural dye from the peel of red dragon fruit has potential as a dye sensitizer. Further research is still required to improve the performance of the DSSC.

Absorption Spectra and Excited State Energy Levels of the N719 Dye on TiO2 in Dye-Sensitized Solar Cell Models

2011 ◽  
Vol 115 (17) ◽  
pp. 8825-8831 ◽  
Author(s):  
Filippo De Angelis ◽  
Simona Fantacci ◽  
Edoardo Mosconi ◽  
Mohammad K. Nazeeruddin ◽  
Michael Grätzel
Keyword(s):  
Excited State ◽  
Solar Cell ◽  
Absorption Spectra ◽  
State Energy ◽  
Energy Levels ◽  
Dye Sensitized Solar Cell ◽  
Cell Models ◽  
Excited State Energy ◽  
Dye Sensitized

PENGARUH KONSENTRASI KITOSAN PADA SINTESIS NANOPARTIKEL TIO2 UNTUK APLIKASI PADA DYESENSITIZED SOLAR CELL (DSSC)

2013 ◽  
Vol 3 (2) ◽  
pp. 77
Author(s):  
Maya Komalasari ◽  
Teuku Fawzul Akbardan ◽  
Bambang Sunendar
Keyword(s):  
Solar Cell ◽  
Sol Gel ◽  
Dye Sensitized Solar Cell ◽  
Solar Simulator ◽  
Dye Sensitized

Pada penelitian ini dilakukan sintesis nanopartikel TiO2 menggunakan metode sol-gel dengan pelarut air. Pada proses sintesis ditambahkan kitosan dengan konsentrasi 0; 2,5; 5; dan 10% v/v. TiO2hasil sintesis kemudian dikarakterisasi dengan menggunakan SEM, XRD, dan BET  untuk mengetahui morfologi,  struktur kristal, dan karakteristik pori. Selain itu keempat variasi TiO2diaplikasikan sebagai foto elektroda DSSC. Karakterisasi DSSC dilakukan dengan menggunakan solar simulator AM 1,5 untuk mengetahui karakteristik I-V DSSC. Hasil karakterisasi menunjukkan penambahan kitosan pada konsentrasi rendah (2,5% v/v) mengurangi fasa anatase pada kristal  TiO2dan cenderung memperbesar ukuran kristalit. Penambahan kitosan melebihi 5% meningkatkan fasa anatase dan memperkecil ukuran kristalit. Konsentrasi kitosan 2,5% memperkecil luas permukaan spesifik partikel dan volume total pori. Peningkatan konsentrasi kitosan memberi hasil sebaliknya. Performa DSSC terbaik didapat pada TiO2 dengan konsentrasi kitosan 2,5% saat sintesis, dengan Voc = 0,58 V, Jsc = 0,74 mA/cm , dan η = 0,51%.Kata kunci: titanium dioksida, Dye Sensitized Solar Cell, kitosan

Optimization of Photoelectrode for Flexible Dye-sensitized Solar Cell and Preliminary Study of Tandem Cell

2013 ◽  
Vol 28 (5) ◽  
pp. 527-531
Author(s):  
Feng-Juan LIU ◽  
Jing-Zhen SHAO ◽  
Wei-Wei DONG ◽  
Zan-Hong DENG ◽  
Shi-Mao WANG ◽  
...  
Keyword(s):  
Solar Cell ◽  
Dye Sensitized Solar Cell ◽  
Tandem Cell ◽  
Dye Sensitized ◽  
Preliminary Study
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