Magnetic Ge:Mn nanocrystals grown by MBE on insulator substrate for solar cell and photodetector applications

2021 ◽  
pp. 151644
Author(s):  
M. Aouassa ◽  
W. Alhosaini ◽  
T.A. Taha
Keyword(s):  
Solar Cell ◽  
Insulator Substrate

scholarly journals Fabrication of a Silicon Nanowire Solar Cell on a Silicon-on-Insulator Substrate

2019 ◽  
Vol 9 (5) ◽  
pp. 818 ◽  
Author(s):  
Shinya Kato ◽  
Yasuyoshi Kurokawa ◽  
Kazuhiro Gotoh ◽  
Tetsuo Soga
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Silicon Nanowire ◽  
Surface Recombination ◽  
Silicon On Insulator ◽  
Sinw Array ◽  
Amorphous Si ◽  
Insulator Substrate ◽  
Si Wafer

This study proposes metal-assisted chemical etching (MAE) as a facile method to fabricate silicon nanowire (SiNW) array structures, with high optical confinement for thin crystalline silicon solar cells. Conventional SiNW arrays are generally fabricated on Si wafer substrates. However, tests on conventional SiNW-based solar cells cannot determine whether the photo-current is derived from SiNWs or from the Si wafer. Herein, SiNW arrays were fabricated on a silicon-on-insulator substrate with a 10-μm-thick silicon layer for measuring the photocurrent of the SiNW only. The 9 μm-long p-type SiNW arrays were applied to a solar cell structure fabricated using an n-type H-doped amorphous Si layer, thereby confirming the photovoltaic effect. However, the device exhibited a conversion efficiency of 0.0017% because of a low short-circuit current (Jsc) and a low open-circuit voltage (Voc). The low Jsc resulted from a high series resistance and high absorption loss from the amorphous Si layer, whereas the low Voc resulted from the high surface recombination velocity of the SiNW array structure. Therefore, reducing the surface recombination of SiNW-based solar cells can improve their conversion efficiency.

Free‐base tetra‐arylphthalocyanines for dye‐sensitised nanostructured solar cell applications

2001 ◽  
Vol 5 (8) ◽  
pp. 609-616 ◽  
Author(s):  
Viviane Aranyos ◽  
Johan Hjelm ◽  
Anders Hagfeldt ◽  
Helena Grennberg
Keyword(s):  
Solar Cell ◽  
Free Base

CORRELATION OF ELECTRICAL PROPERTIES OF a-SiHxMIS SOLAR CELL STRUCTURES WITH THE STATE OF OXIDATION OF THE INTERFACE

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-475-C4-478
Author(s):  
C. R. Wronski ◽  
Y. Goldstein ◽  
S. Kelemen ◽  
B. Abeles ◽  
H. Witzke
Keyword(s):  
Solar Cell ◽  
Electrical Properties ◽  
The State ◽  
Cell Structures

Experimental and Theoretical Comparable Study of Pure and Zinc Porphyrin Surface Modified ZnO Nanorod Arrays for Hybrid Solar Cell Applications

2020 ◽  
pp. 114-119
Keyword(s):  
Solar Cell ◽  
Electrochemical Impedance ◽  
Hybrid Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Annealing Effects ◽  
Vertically Aligned ◽  
Surface Modified

Experimental and theoretical study Porphyrin-grafted ZnO nanowire arrays were investigated for organic/inorganic hybrid solar cell applications. Two types of porphyrin – Tetra (4-carboxyphenyle) TCPP and meso-Tetraphenylporphine (Zinc-TPP)were used to modify the nanowire surfaces. The vertically aligned nanowires with porphyrin modifications were embedded in graphene-enriched poly (3-hexylthiophene) [G-P3HT] for p-n junction nanowire solar cells. Surface grafting of ZnO nanowires was found to improve the solar cell efficiency. There are different effect for the two types of porphyrin as results of Zn existing. Annealing effects on the solar cell performance were investigated by heating the devices up to 225 °C in air. It was found that the cell performance was significantly degraded after annealing. The degradation was attributed to the polymer structural change at high temperature as evidenced by electrochemical impedance spectroscopy measurements.

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