Application of nano-porous-Si and trenched electrode contacts for improving the performance of poly-Si solar cells

2015 ◽  
pp. 71-74
Keyword(s):  
Solar Cells ◽  
Porous Si ◽  
Si Solar Cells

Enhancement of efficiency in graphene/porous silicon solar cells by co-doping graphene with gold nanoparticles and bis(trifluoromethanesulfonyl)-amide

2017 ◽  
Vol 5 (35) ◽  
pp. 9005-9011 ◽  
Author(s):  
Ju Hwan Kim ◽  
Dong Hee Shin ◽  
Ha Seung Lee ◽  
Chan Wook Jang ◽  
Jong Min Kim ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Solar Cells ◽  
Porous Silicon ◽  
Au Nanoparticles ◽  
Silicon Solar Cells ◽  
Porous Si ◽  
Co Doping ◽  
Si Solar Cells ◽  
First Time

The co-doping of graphene with Au nanoparticles and bis(trifluoromethanesulfonyl)-amide is employed for the first time to enhance the performance of graphene/porous Si solar cells.

Effect of layer number and metal-chloride dopant on multiple layers of graphene/porous Si solar cells

2018 ◽  
Vol 123 (12) ◽  
pp. 123101 ◽  
Author(s):  
Dong Hee Shin ◽  
Jong Min Kim ◽  
Chan Wook Jang ◽  
Ju Hwan Kim ◽  
Sung Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Metal Chloride ◽  
Porous Si ◽  
Layer Number ◽  
Si Solar Cells

Fabrication of Anti-Reflecting Silicon Surfaces for Solar Cells Using Ag Assisted Chemical Etching

2013 ◽  
Vol 631-632 ◽  
pp. 717-720
Author(s):  
Chun Lin He ◽  
Xue Fei Yang ◽  
Guo Feng Ma ◽  
Jian Ming Wang ◽  
Zhao Fu Du ◽  
...  
Keyword(s):  
Solar Cells ◽  
Chemical Etching ◽  
Room Temperature ◽  
Silicon Surfaces ◽  
High Porosity ◽  
Porous Si ◽  
Key Technology ◽  
Si Solar Cells ◽  
The Cost ◽  
Si Wafer

Antireflection of silicon surface is one key technology for manufacture of efficient solar cells. The noble metal assisted chemical etching Si wafer can quickly produce a black Si surface with a high porosity in HF-H2O2-H2O solution at room temperature. The pores formed are straight and vertical to the surface of Si. The porous Si surface exhibits a reflectivity of 2 % in the range of 200-1000 nm, which shows that this process is beneficial to improve the conversion efficiency and to decrease the cost of Si solar cells.

Investigation Of Efficiency Improvement on Silicon Solar Cells Due to Porous Layers

1994 ◽  
Vol 358 ◽  
Author(s):  
Gregory Sun ◽  
Yuxin Li ◽  
Yicheng Lu ◽  
Babar Khan ◽  
Gary S. Tompa
Keyword(s):  
Solar Cells ◽  
Porous Layer ◽  
Light Emission ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Porous Si ◽  
Etching Technique ◽  
Shallow Junction ◽  
Si Solar Cells

ABSTRACTObservation of light emission from porous Si has demonstrated that the optical properties of Si can be drastically altered by the quantum size effects. We have investigated the improvement of absorption properties of Si material by forming a porous Si layer. Shallow-junction commercial crystalline as well as polycrystalline Si solar cells without anti-reflective coatings have been processed into porous Si solar cells by a wet chemical etching technique. Our best results have demonstrated more than 15% improvement in short-circuit current with no change in open-circuit voltage. The performance of the porous Si solar cells has been found to be sensitive to the porous layer thickness. The efficiency can be reduced when the porous layer is relatively deep, presumably due to the penetration of pores through the shallow junction. We believe porous Si can be optimized for photovoltaic applications by properly controlling its porosity and thickness.

scholarly journals Nanostructure of Porous Si and Anodic SiO2 Surface Passivation for Improved Efficiency Porous Si Solar Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 459 ◽  
Author(s):  
Panus Sundarapura ◽  
Xiao-Mei Zhang ◽  
Ryoji Yogai ◽  
Kazuki Murakami ◽  
Alain Fave ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
Surface Passivation ◽  
Photovoltaic Effect ◽  
Electrochemical Anodization ◽  
Superior Performance ◽  
Porous Si ◽  
Sio2 Surface ◽  
Si Solar Cells ◽  
Passivation Time

The photovoltaic effect in the anodic formation of silicon dioxide (SiO2) on porous silicon (PS) surfaces was investigated toward developing a potential passivation technique to achieve high efficiency nanostructured Si solar cells. The PS layers were prepared by electrochemical anodization in hydrofluoric acid (HF) containing electrolyte. An anodic SiO2 layer was formed on the PS surface via a bottom-up anodization mechanism in HCl/H2O solution at room temperature. The thickness of the oxide layer for surface passivation was precisely controlled by adjusting the anodizing current density and the passivation time, for optimal oxidation on the PS layer while maintaining its original nanostructure. HRTEM characterization of the microstructure of the PS layer confirms an atomic lattice matching at the PS/Si interface. The dependence of photovoltaic performance, series resistance, and shunt resistance on passivation time was examined. Due to sufficient passivation on the PS surface, a sample with anodization duration of 30 s achieved the best conversion efficiency of 10.7%. The external quantum efficiency (EQE) and internal quantum efficiency (IQE) indicate a significant decrease in reflectivity due to the PS anti-reflection property and indicate superior performance due to SiO2 surface passivation. In conclusion, the surface of PS solar cells could be successfully passivated by electrochemical anodization.

Performance enhancement of graphene/porous Si solar cells by employing layer-controlled MoS2

2020 ◽  
Vol 532 ◽  
pp. 147460 ◽  
Author(s):  
Chan Wook Jang ◽  
Dong Hee Shin ◽  
Jung Sun Ko ◽  
Suk-Ho Choi
Keyword(s):  
Solar Cells ◽  
Performance Enhancement ◽  
Porous Si ◽  
Si Solar Cells

INDUSTRIALIZATION OF a-Si SOLAR CELLS

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-1155-C4-1164 ◽  
Author(s):  
Y. Kuwano ◽  
M. Ohnishi
Keyword(s):  
Solar Cells ◽  
Si Solar Cells

Studies on Backside Al-Contact Formation in Si Solar Cells: Fundamental Mechanisms

2008 ◽  
Author(s):  
Vishal Mehta ◽  
Bhushan Sopori ◽  
Przemyslaw Rupnowski ◽  
Helio Moutinho ◽  
Aziz Shaikh ◽  
...  
Keyword(s):  
Solar Cells ◽  
Contact Formation ◽  
Si Solar Cells
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