Synthesis of Highly-Ordered TiO2 through CO2 Supercritical Extraction for Dye-Sensitized Solar Cell Application

2013 ◽  
Vol 789 ◽  
pp. 28-32 ◽  
Author(s):  
Bambang Priyono ◽  
Akhmad Herman Yuwono ◽  
B. Munir ◽  
A. Rahman ◽  
A. Maulana ◽  
...  
Keyword(s):  
Solar Cell ◽  
Renewable Energy Sources ◽  
High Surface ◽  
Sol Gel ◽  
Open Circuit ◽  
Supercritical Extraction ◽  
Dye Sensitized Solar Cell ◽  
Promising Alternative ◽  
Solar Cell Application ◽  
Dye Sensitized

Dye-sensitized solar cell (DSSC) is one of the very promising alternative renewable energy sources to anticipate the diminishing in the fossil fuel reserves in the next few decades and to make use of the abundance of intensive sunlight energy in tropical countries like Indonesia. TiO2nanoparticles have been used as the photo electrode in DSSC because of its high surface area and allow the adsorption of a large number of dye molecules. In the present study, TiO2aerogel have been synthesized via sol-gel process with water to inorganic precursor ratio (Rw) of 2.00, followed with subsequent drying by CO2supercritical extraction (SCE). As comparison, the TiO2xerogel was also prepared by conventional drying and annealing. Both types of gels were subjected to conventional and multi-step annealing. The resulting nanoparticles in aerogel and xerogel have a band-gap energy of 3.10 and 3.04 eV, respectively. The open circuit voltage (Voc) measurement reveals that the DSSC fabricated with aerogel provided a higher voltage (21,40 mV) than xerogel (1,10 mV).

One-Dimensional ZnO Nanostructures by Wet-Chemistry Technique for Dye Sensitized Solar Cell Application

2012 ◽  
Vol 576 ◽  
pp. 406-412
Author(s):  
A.H. Yuwono ◽  
Nofrijon Sofyan ◽  
S. Harjanto ◽  
D. Daneswara ◽  
A. Ferdiansyah ◽  
...  
Keyword(s):  
Solar Cell ◽  
Performance Test ◽  
Ruthenium Complex ◽  
Sol Gel ◽  
Zno Nanorods ◽  
Hydrothermal Process ◽  
Open Circuit ◽  
Dye Sensitized Solar Cell ◽  
Solar Cell Application ◽  
Dye Sensitized

In the current work, ZnO nanoflowers have been synthesized via sol-gel technique using a mixture of zinc-nitratetetrahydrate, ammonia and polyethylene glycol (PEG). Variation in PEG concentration and ammonia evaporation delay time was performed and the resulting nanoflowers have been investigated using x-ray diffraction (XRD) and scanning electronmicroscope (SEM). To explore the potential of the resulting ZnO nanorods, a prototype of dye sensitized solar cell (DSSC) has been fabricated. For this purpose, the nanorods were grown directly on conducting ITO substrates by nanoseeding technique. With a variation in nano seeding time for 2, 4 and 6 days, followed by hydrothermal process at 80oC for 20 hours, ZnO nanorods with average diameter of 82, 332 and 1385 nm have been synthesized. The performance test showed the resulting open circuit voltage (Voc) was increased from 398 to 486 mV when the diameter of ZnO nanorods increased from 82 to 332 nm. However, the Voc decreased slightly to 456 mV when the nanorods further increased to 1385nm. The phenomenon is related to the interaction between the semiconductor oxide and the Ruthenium complex organic dye.

scholarly journals Sol Gel Synthesized Nanosilica as Photoanode Material for Dye Sensitized Solar Cells (DSSCs) System

2014 ◽  
Vol 625 ◽  
pp. 110-113
Author(s):  
Stephanie Lau Chai Tying ◽  
Coswald Stephen Sipaut ◽  
Jedol Dayou ◽  
Rachel Fran Mansa
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Band Gap ◽  
Surface Area ◽  
High Surface ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye-sensitized solar cells (DSSCs) have been extensively studied due to their promising potential for high efficiency, low production cost and eco-friendly production. The photoanode of DSSCs is traditionally composed of randomly packed TiO2 nanoparticles which have large specific surface area and suitable band gap (3.2 eV) for the effective injection of electrons from the dye molecules to the semiconductor. However, its high surface charge recombination rate accounts for its low efficiency. Alternatively, silica which is chemically inert, thermally stable, high surface area, and inexpensive can be used to substitute TiO2 as photoanode material. However, bulk silica has a wide band gap of 8.9 eV and its band gap need to be narrowed in order to use it as photoanode materials. Thus, in this study, the effect of nanosilica photoanode and its particle size on the performance of dye sensitized solar cell are investigated and characterized. The result is then compared with the fumed silica and conventional TiO2 DSSCs. Although the results shows that photon-electron conversion is inferior compared to TiO2 photoanode, it has a great potential as the fabrication cost is low and more environmental friendly.Keywords : Dye Sensitized Solar Cell, Photoanode material, Nanosilica, Sol gel synthesis

scholarly journals Synthesis of Nanoporous TiO2and Its Potential Applicability for Dye-Sensitized Solar Cell Using Antocyanine Black Rice

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
Brian Yuliarto ◽  
Wilman Septina ◽  
Kasyful Fuadi ◽  
Fahiem Fanani ◽  
Lia Muliani ◽  
...  
Keyword(s):  
Solar Cell ◽  
Short Circuit ◽  
Anatase Phase ◽  
Sol Gel ◽  
Open Circuit ◽  
Dye Sensitized Solar Cell ◽  
Black Rice ◽  
Calcination Temperatures ◽  
Dye Sensitized ◽  
Potential Applicability

Nanoporous mesostructure TiO2powders were synthesized by sol-gel method, withTiCl4as a precursor in methanol solution. The Pluronic PE 6200 of block copolymer was used as the pores template. It was found from XRD measurements, both at400∘C and450∘C calcination temperatures, that the sol-gel technique yielded the nanoporous TiO2with anatase phase. Based onN2adsorption characterization using BET method, the TiO2samples have surface area of 108 m2/g and 88 m2/g for calcination temperatures of400∘C and of450∘C, respectively. From small-angle neutron scattering (SANS) patterns, TiO2samples were observed to have nanoporous structures with pore sizes between 22–24 nm. The TiO2also have order degree which depends on the calcination temperature. The potential applicability of the resulting TiO2is confirmed for dye-sensitized solar cell (DSSC), composed of nanoporous anatase TiO2and natural dye from antocyanine black rice. UV-Vis measurement of dye extracted from the black rice indicated that the antocyanine chelate can propagate into the TiO2nanoporous network. The short circuit photocurrent density (Jsc) under 100 mWcm−2reached 1.287 mAcm−2with open circuit photovoltage (Voc) of 550 mV and the fill factor of 33.4%. The results show that the hybrid organic-inorganic structures are very attractive for future low-cost devices.

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

Multiple-Anchoring Triphenylamine Dyes for Dye-Sensitized Solar Cell Application

2014 ◽  
Vol 118 (17) ◽  
pp. 8756-8765 ◽  
Author(s):  
Guohua Wu ◽  
Fantai Kong ◽  
Yaohong Zhang ◽  
Xianxi Zhang ◽  
Jingzhe Li ◽  
...  
Keyword(s):  
Solar Cell ◽  
Dye Sensitized Solar Cell ◽  
Solar Cell Application ◽  
Dye Sensitized ◽  
Triphenylamine Dyes

Photoanode characteristics of dye-sensitized solar cell containing TiO2 layers with different crystalline orientations

2009 ◽  
Vol 24 (4) ◽  
pp. 1417-1421 ◽  
Author(s):  
Mamiko Kawakita ◽  
Jin Kawakita ◽  
Tetsuo Uchikoshi ◽  
Yoshio Sakka
Keyword(s):  
Solar Cell ◽  
Electrochemical Reaction ◽  
Dye Adsorption ◽  
Open Circuit ◽  
Dye Sensitized Solar Cell ◽  
Photoelectric Conversion Efficiency ◽  
Electrochemical Characteristics ◽  
Cathodic Reaction ◽  
Photoelectric Conversion ◽  
Dye Sensitized

The influence of the crystalline orientation of the TiO2 photoanode on the photo-electrochemical characteristics was investigated to reveal the primary factors responsible for improving the photoelectric conversion efficiency of a dye-sensitized solar cell. It was observed that the photocurrent depended on the plane orientation, whereas the dependence of the photopotential on the open circuit was almost constant. The rate of the photoanodic reaction was attributed to the dye adsorption, depending on the surface energy of each oriented plane of the TiO2. The cathodic reaction on TiO2 during open circuit is likely to determine the rate of the entire electrochemical reaction.

A p-Type NiO-Based Dye-Sensitized Solar Cell with an Open-Circuit Voltage of 0.35 V

2009 ◽  
Vol 48 (24) ◽  
pp. 4402-4405 ◽  
Author(s):  
Elizabeth A. Gibson ◽  
Amanda L. Smeigh ◽  
Loïc Le Pleux ◽  
Jérôme Fortage ◽  
Gerrit Boschloo ◽  
...  
Keyword(s):  
Solar Cell ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
P Type

Fabricate Dye-Sensitized Solar Cell with Electrospining

2011 ◽  
Vol 335-336 ◽  
pp. 1117-1120
Author(s):  
Yun Yun Chu ◽  
Yu Chou Chao
Keyword(s):  
Solar Cell ◽  
Electron Transport ◽  
High Surface ◽  
High Surface Area ◽  
Dye Adsorption ◽  
Dye Sensitized Solar Cell ◽  
High Electron ◽  
Solar Cell Performance ◽  
Dye Sensitized ◽  
Viable Method

Dye adsorption on Ti02and electron transport in Ti02film are the two critical factors in determining efficiency of the the dye sensitized solar cell (DSSC). Increasing dye adsorption which increases the light harvesting is usually achieved by using nanoporous or nanoparticle Ti02films. Electron transport is determined by the inter-particle resistance of Ti02film. Electrospinning is a viable method for forming porous structure materials with high surface area. In this study, it was found that electrospinning is able to achieve good solar cell performance due to the high electron transport caused by the pores in the Ti02film.

Sign in / Sign up

Export Citation Format

Share Document