Influences of dopant concentration in sol–gel derived AZO layer on the performance of P3HT:PCBM based inverted solar cell

2013 ◽  
Vol 111 ◽  
pp. 181-188 ◽  
Author(s):  
Annisa Aprilia ◽  
Priastuti Wulandari ◽  
Veinardi Suendo ◽  
Herman ◽  
Rahmat Hidayat ◽  
...  
Keyword(s):  
Solar Cell ◽  
Dopant Concentration ◽  
Sol Gel ◽  
Inverted Solar Cell

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

Sol-gel growth of Ni doped CdS on glass substrates: effect of spin coating speed and dopant concentration

2020 ◽  
Vol 10 ◽  
Author(s):  
Atefeh Nazari Setayesh ◽  
Hassan Sedghi
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Spin Coating ◽  
Optical Band Gap ◽  
Dopant Concentration ◽  
Rotation Speed ◽  
Sol Gel ◽  
Band Gap Energy ◽  
Gap Energy ◽  
Glass Substrates

Background: In this work, CdS thin films were synthesized by sol-gel method (spin coating technique) on glass substrates to investigate the optical behavior of the film. Methods: Different substrate spin coating speeds of 2400, 3000, 3600 rpm and different Ni dopant concentrations of 0 wt.%, 2.5 wt.%, 5 wt.%) were investigated. The optical properties of thin films such as refraction index, extinction coefficient, dielectric constant and optical band gap energy of the layers were discussed using spectroscopic ellipsometry method in the wavelength range of 300 to 900 nm. Results: It can be deduced that substrate rotation speed and dopant concentration has influenced the optical properties of thin films. By decreasing rotation speed of the substrate which results in films with more thicknesses, more optical interferences were appeared in the results. Conclusion: The samples doped with Ni comparing to pure ones have had more optical band gap energy.

scholarly journals Efficient Inverted Solar Cells Using Benzotriazole-Based Small Molecule and Polymers

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 393
Author(s):  
Ja Eun Lee ◽  
Yoon Kim ◽  
Yang Ho Na ◽  
Nam Seob Baek ◽  
Jae Woong Jung ◽  
...  
Keyword(s):  
Solar Cell ◽  
Conjugated Polymers ◽  
Power Conversion ◽  
High Energy ◽  
Photovoltaic Properties ◽  
Device Structures ◽  
Donor Acceptor ◽  
Medium Band ◽  
Inverted Solar Cell ◽  
Conventional Device

We synthesized medium-band-gap donor-acceptor (D-A) -type conjugated polymers (PBTZCZ-L and PBTZCZ-H) consisting of a benzotriazole building block as an acceptor and a carbazole unit as a donor. In comparison with the polymers, a small conjugated molecule (BTZCZ-2) was developed, and its structural, thermal, optical, and photovoltaic properties were investigated. The power conversion efficiency (PCE) of the BTZCZ-2-based solar cell devices was less than 0.5%, considerably lower than those of polymer-based devices with conventional device structures. However, inverted solar cell devices configured with glass/ITO/ZnO:PEIE/BTZCZ-2:PC71BM/MoO3/Ag showed a tremendously improved efficiency (PCE: 5.05%, Jsc: 9.95 mA/cm2, Voc: 0.89 V, and FF: 57.0%). We believe that this is attributed to high energy transfer and excellent film morphologies.

scholarly journals Influence of Ce Doping on the Electrical and Optical Properties of TiO2and Its Photocatalytic Activity for the Degradation of Remazol Brilliant Blue R

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Aisha Malik ◽  
S. Hameed ◽  
M. J. Siddiqui ◽  
M. M. Haque ◽  
M. Muneer
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Dopant Concentration ◽  
Atmospheric Oxygen ◽  
Sol Gel ◽  
Analytical Techniques ◽  
Xrd Analysis ◽  
Brilliant Blue ◽  
Tem Analysis ◽  
Remazol Brilliant Blue R

Nanocrystalline TiO2particles doped with different concentrations of Cerium (Ce, 1–10%) have been synthesized using sol-gel method. The prepared particles were characterized by standard analytical techniques such as X-ray diffraction (XRD), FTIR and Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM). The XRD analysis shows no change in crystal structure of TiO2after doping with different concentrations of Ce, which indicates the single-phase polycrystalline material. The SEM analysis shows the partial crystalline nature of undoped, and doped TiO2and TEM analysis shows the particle sizes were in the range of 9–14 nm in size. The a.c. analysis shows that the dielectric constantεand dielectric loss tanδdecrease with the increase in frequency. The dielectric property decreases with the increase in dopant concentration. It is also observed that the impedance increases with an increase in dopant concentration. The photocatalytic activity of the synthesized particles (Ce-doped TiO2) with dopant concentration of 9% (Ce) showed the highest photocatalytic activity for the degradation of the dye derivative Remazol Brilliant Blue R in an immersion well photochemical reactor with 500 W halogen linear lamp in the presence of atmospheric oxygen.

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