Silicon bulk growth for solar cells: Science and technology

2017 ◽  
Vol 56 (2) ◽  
pp. 020101 ◽  
Author(s):  
Koichi Kakimoto ◽  
Bing Gao ◽  
Satoshi Nakano ◽  
Hirofumi Harada ◽  
Yoshiji Miyamura
Keyword(s):  
Solar Cells ◽  
Science And Technology ◽  
Bulk Growth ◽  
Silicon Bulk

scholarly journals The Effect of Eriochrome Black T Concentrations on the Efficiency of Dye-sensitized Solar Cells

2018 ◽  
pp. 1-13
Author(s):  
Moutasim Ali Ahmed ◽  
M. Dirar ◽  
Mohamed A. Siddig ◽  
S. M. H. Abdalsakhi
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Glass Substrate ◽  
Science And Technology ◽  
Medical Science ◽  
Dye Sensitized Solar Cells ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Eriochrome Black T ◽  
Ito Glass

Aims: To investigate The effect of concentration on organic solar cell efficiency. Study Design:  Polymer and natural dye Eriochrome black T were deposited on ITO glass substrate, and then the resulted cells were tested for  characteristics. Place and Duration of Study: International University of Africa Faculty of Pure and applied science-Department of Physics collaboration with University Medical Science and Technology- Alawia Centre and  AlNilain University – Faculty of Science and Technology – Department of Physics, between March 2016 and May 2017. Methodology: we have dye of different colour, we select three colours the dye, and then UV-visible spectrometer used for absorption spectra. After that, the relation between absorption and wavelength, absorption coefficient, and energy band gap were found graphically. Finally, cells were designed on ITO glass substrate by using spin coating deposition. Characteristics measured.   Results: The relation between the Eriochrome black T concentration of dye for three samples are 6.67, 6.03, and 5.43 g/L, and the corresponding efficiencies for dark blue are 0.091, 0.090 and 0.229 respectively. The efficiencies of yellow Eriochrome Black T are 0.228, 0.193 and 0.181. And the efficiencies of red Eriochrome Black T are 0.246, 0.235 and 0.193. The decreases of efficiency due to the decreases of Eriochrome Black T concentration is related to the direct relation between Eriochrome Black T concentration and solar cell. Conclusion: The efficiency of dye-sensitised solar cells can be increased by increasing the Eriochrome Black T dye concentrations at least within the examined range. The Eriochrome Black T dye type also affect efficiency. This includes the transparency of the Eriochrome Black T dye beside the value of the Fermi energy. In addition to the relative positions of highest occupied molecular orbitals (HOMO) and lowest unoccupied molecular orbits (LUMO) to nearby layers.  

Floating Cast Method as a New Growth Method of Silicon Bulk Multicrystals for Solar Cells

2008 ◽  
pp. 149-156 ◽  
Author(s):  
I. Takahashi ◽  
Y. Nose ◽  
N. Usami ◽  
K. Fujiwara ◽  
K. Nakajima
Keyword(s):  
Solar Cells ◽  
Silicon Bulk ◽  
Growth Method

scholarly journals Geometrical optimisation of core–shell nanowire arrays for enhanced absorption in thin crystalline silicon heterojunction solar cells

2019 ◽  
Vol 10 ◽  
pp. 322-331 ◽  
Author(s):  
Robin Vismara ◽  
Olindo Isabella ◽  
Andrea Ingenito ◽  
Fai Tong Si ◽  
Miro Zeman
Keyword(s):  
Solar Cells ◽  
Crystalline Silicon ◽  
Collection Efficiency ◽  
Strong Dependence ◽  
Nanowire Array ◽  
Nanowire Arrays ◽  
Optical Performance ◽  
Enhanced Absorption ◽  
Wide Range ◽  
Silicon Bulk

Background: Elongated nanostructures, such as nanowires, have attracted significant attention for application in silicon-based solar cells. The high aspect ratio and characteristic radial junction configuration can lead to higher device performance, by increasing light absorption and, at the same time, improving the collection efficiency of photo-generated charge carriers. This work investigates the performance of ultra-thin solar cells characterised by nanowire arrays on a crystalline silicon bulk. Results: Proof-of-concept devices on a p-type mono-crystalline silicon wafer were manufactured and compared to flat references, showing improved absorption of light, while the final 11.8% (best-device) efficiency was hindered by sub-optimal passivation of the nanowire array. A modelling analysis of the optical performance of the proposed solar cell architecture was also carried out. Results showed that nanowires act as resonators, amplifying interference resonances and exciting additional wave-guided modes. The optimisation of the array geometrical dimensions highlighted a strong dependence of absorption on the nanowire cross section, a weaker effect of the nanowire height and good resilience for angles of incidence of light up to 60°. Conclusion: The presence of a nanowire array increases the optical performance of ultra-thin crystalline silicon solar cells in a wide range of illumination conditions, by exciting resonances inside the absorber layer. However, passivation of nanowires is critical to further improve the efficiency of such devices.

scholarly journals Silicon Bulk Issues during Processing of Homo-heterojunction Solar cells

2015 ◽  
Vol 77 ◽  
pp. 451-457 ◽  
Author(s):  
Tristan Carrere ◽  
Renaud Varache ◽  
Jérôme Le Perchec ◽  
Christine Denis ◽  
Delfina Muñoz ◽  
...  
Keyword(s):  
Solar Cells ◽  
Heterojunction Solar Cells ◽  
Silicon Bulk

Very high efficiency silicon solar cells-science and technology

1999 ◽  
Vol 46 (10) ◽  
pp. 1940-1947 ◽  
Author(s):  
M.A. Green ◽  
Jianhua Zhao ◽  
A. Wang ◽  
S.R. Wenham
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Science And Technology ◽  
Silicon Solar Cells ◽  
Very High
Sign in / Sign up

Export Citation Format

Share Document