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 ◽  
...  

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.

2013 ◽  
Vol 789 ◽  
pp. 28-32 ◽  
Author(s):  
Bambang Priyono ◽  
Akhmad Herman Yuwono ◽  
B. Munir ◽  
A. Rahman ◽  
A. Maulana ◽  
...  

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).


2015 ◽  
Vol 633 ◽  
pp. 359-365 ◽  
Author(s):  
Fatemeh Dehghan Nayeri ◽  
Mohammadreza Kolahdouz ◽  
Ebrahim Asl-Soleimani ◽  
S. Mohajerzadeh

2017 ◽  
Vol 7 (4) ◽  
pp. 312-318 ◽  
Author(s):  
Iwantono Iwantono ◽  
Fera Anggelina ◽  
Siti Khatijah Md Saad ◽  
Mohd Yusri Abd Rahman ◽  
Akrajas Ali Umar

2015 ◽  
Vol 1805 ◽  
Author(s):  
Chaoyang Li ◽  
Shengwen Hou

ABSTRACTZnO nanorods were synthesized by recrystallization of ZnO thin films during multiannealing process. It was found that the obtained ZnO nanorods showed well-controlled grown direction. The periodical oxygen introducing between reducing annealing processes was effective to help on the oxidization reaction, result in the ZnO nanorods growth significantly. With controlling the annealing parameters, the morphologies of ZnO nanorods could be also controlled. The low-temperature (less than 420°C) initial reducing annealing process contributed to control the density of ZnO nanorods. The multi-annealing processes could reduce the ZnO thin film to produce ZnO nanorods efficiently. The structural, optical and electrical properties of the ZnO nanorods were investigated. Finally, the obtained ZnO nanorods used as photoelectrodes demonstrated in a dye-sensitized solar cell, the overall conversion efficiency of 3.65% was achieved.


2018 ◽  
Vol 13 (12) ◽  
pp. 1912-1916 ◽  
Author(s):  
M. Shaheer Akhtar ◽  
Sadia Ameen ◽  
In-Sung Jung ◽  
Jaeho Choi

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
Brian Yuliarto ◽  
Wilman Septina ◽  
Kasyful Fuadi ◽  
Fahiem Fanani ◽  
Lia Muliani ◽  
...  

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.


2013 ◽  
Vol 3 (2) ◽  
pp. 77
Author(s):  
Maya Komalasari ◽  
Teuku Fawzul Akbardan ◽  
Bambang Sunendar

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


2014 ◽  
Vol 118 (17) ◽  
pp. 8756-8765 ◽  
Author(s):  
Guohua Wu ◽  
Fantai Kong ◽  
Yaohong Zhang ◽  
Xianxi Zhang ◽  
Jingzhe Li ◽  
...  

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