Effect of dye absorption time on performance of ZnO, TiO2 and ‎SnO2 nanoparticle photo-anodes in dye sensitized solar cell

A dye-sensitized solar cell (DSC) is the third generation of solar technology, utilizing TiO2 nanoparticles with sizes of 20–30 nm as the photoelectrode material. The integration of smaller nanoparticles has the advantage of providing a larger surface area, yet the presence of grain boundaries is inevitable, resulting in a higher probability of electron trapping. This study reports on the improvement of charge transport through the integration of quantum dot (QD) TiO2 with a size of less than 10 nm as the dye absorption photoelectrode layer. The QD TiO2 samples were synthesized through sol–gel and reflux methods in a controlled pH solution without surfactants. The synthesized samples were analyzed using microscopic, diffraction, absorption, as well as spectroscopic analyses. A current–voltage and impedance analysis was used to evaluate the performance of a DSC integrated with synthesized TiO2 as the photoelectrode material. The sample with smaller crystallite structures led to a large surface area and exhibited a higher dye absorption capability. Interestingly, a DSC integrated with QD TiO2 showed a higher steady-state electron density and a lower electron recombination rate. The shallow distribution of the trap state led to an improvement of the electron trapping/de-trapping process between the Fermi level and the conduction band of oxide photoelectrode material, hence improving the lifetime of generated electrons and the overall performance of the DSC.

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Sintesa Titanium dioxide (TiO2) untuk Dye-Sensitized Solar Cell dengan Antosianin Bunga Rosella (Hibiscus sabdariffa)

INDONESIAN JOURNAL OF APPLIED PHYSICS ◽

10.13057/ijap.v3i02.1268 ◽

2016 ◽

Vol 3 (02) ◽

pp. 181

Author(s):

Elsa Ayu Adhitya ◽

Ari Handono Ramelan ◽

Suharyana S

Keyword(s):

Titanium Dioxide ◽

Solar Cells ◽

Solar Cell ◽

Anatase Phase ◽

High Surface ◽

Semiconductor Layer ◽

Dye Sensitized Solar Cell ◽

X Ray ◽

Dye Sensitized ◽

Dye Absorption

Synthesis of titanium dioxide (TiO2) for dye sensitized solar cell (DSSC) with anthocyanins rosella (Hibisccus Sabdariffa) has succesfully been done using sol-gel technique. The semiconductor layer is a very important part of the DSSC since it gives a high surface area for dye absorption which gives rise to high currents. DSSC was formed structually two electrodes sandwiching the electrolyte. The working electrode is TiO2 layer coating on a Fluorine doped Tin Oxide (FTO) glass substrat and sensitified with anthocyanin dye. A counter electrode is carbon coating on the FTO. The fabricated solar cells have an area of 1.5 cm2, soaked in the anthocyanin dye for 24 hours and 48 hours. The sample was characteriz with X-ray diffraction method. The X-ray diffractogram indicates that the sample possesses rutile and anatase phase. The dye absorption measured using spektrofotometer UV-Visible Lambda 25 showed the absorption occurs in the range 440-620 nm. The efficiencies of the solar cells measured by I-V meter Keithley for 24 and 48 hours soaking are 0.0064(6)%, and 0.0151(4)%, respectively.

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Development of Dye Sensitized Solar Cell Using Eco-Friendly Dyes Extracted from Natural Resources

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1086.68 ◽

2015 ◽

Vol 1086 ◽

pp. 68-74 ◽

Cited By ~ 1

Author(s):

Sophia Selvarajan ◽

J. Jerry ◽

Arun Dakshinamurthy ◽

A. Ramasubbu ◽

P. Mosae Selvakumar

Keyword(s):

Solar Cell ◽

Organic Dyes ◽

Low Cost ◽

Sem Analysis ◽

Crocus Sativus ◽

Dye Sensitized Solar Cell ◽

Dye Sensitized ◽

Ito Glass ◽

Carbon Soot ◽

Dye Absorption

In this study, we investigated the photovoltaic efficiency of DSSC (Dye Sensitized Solar Cell) using five different organic dyes extracted from natural sources namely Gomphrena globosa, Syzygium cumini (fruit and leaf), Crocus sativus, Caesalpinia sappan and Rubia cordifolia. Commercially obtained TiO2 powder, coated over the conducting glass substrate was used as the photo anode and the same coated with carbon soot was used as the photo cathode. UV spectrophotometer and photoluminescence spectrophotometer were used to characterize the dyes to find their absorption and emission maxima respectively. X-Ray diffractometer was used to characterize the TiO2 electrode film. SEM analysis was also carried out to study the surface morphology. The life and efficiency of DSSC can be improved by studying the dye absorption process and the thickness, size and shape of TiO2 coating. Thus, low cost solar cells can be developed with significant power conversion efficiency.Key words: TiO2, DSSC, natural dyes, ITO glass slides, carbon soot, sintering.

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Hierarchical SnO2 Nanoparticle-ZnO Nanorod Photoanode for Improving Transport and Life Time of Photoinjected Electrons in Dye-Sensitized Solar Cell

ACS Applied Materials & Interfaces ◽

10.1021/am302729v ◽

2013 ◽

Vol 5 (3) ◽

pp. 1038-1043 ◽

Cited By ~ 40

Author(s):

Nguyen Khac Huu ◽

Dae-Yong Son ◽

In-Hyuk Jang ◽

Chang-Ryul Lee ◽

Nam-Gyu Park

Keyword(s):

Solar Cell ◽

Life Time ◽

Dye Sensitized Solar Cell ◽

Zno Nanorod ◽

Dye Sensitized ◽

Sno2 Nanoparticle

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Changes of Properties of a Pt Counter-Electrode by Ion-Beam-Assisted Etching in a Dye-Sensitized Solar Cell

Korean Journal of Metals and Materials ◽

10.3365/kjmm.2015.53.6.445 ◽

2015 ◽

Vol 53 (6) ◽

pp. 445-450 ◽

Cited By ~ 1

Author(s):

Ohsung Song ◽

Yunyoung Noh

Keyword(s):

Solar Cell ◽

Counter Electrode ◽

Ion Beam ◽

Dye Sensitized Solar Cell ◽

Dye Sensitized

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Rapid expansion of TiO2layers processed by supercritical solutions for dye sensitized solar cell applications

Materials Testing ◽

10.3139/120.110936 ◽

2016 ◽

Vol 58 (10) ◽

pp. 900-902 ◽

Cited By ~ 1

Author(s):

Mustafa Tuncer ◽

Hasan Göçmez ◽

Seher Çetin

Keyword(s):

Solar Cell ◽

Rapid Expansion ◽

Dye Sensitized Solar Cell ◽

Dye Sensitized ◽

Supercritical Solutions

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

Jurnal Teknologi Bahan dan Barang Teknik ◽

10.37209/jtbbt.v3i2.39 ◽

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

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