scholarly journals Effect of amorphous Si capping layer on the hole transport properties of BaSi2 and improved conversion efficiency approaching 10% in p-BaSi2/n-Si solar cells

2016 ◽  
Vol 109 (7) ◽  
pp. 072103 ◽  
Author(s):  
Suguru Yachi ◽  
Ryota Takabe ◽  
Hiroki Takeuchi ◽  
Kaoru Toko ◽  
Takashi Suemasu
Keyword(s):  
Solar Cells ◽  
Transport Properties ◽  
Conversion Efficiency ◽  
Hole Transport ◽  
Capping Layer ◽  
Si Solar Cells ◽  
Amorphous Si

scholarly journals Improved conversion efficiency of amorphous Si solar cells using a mesoporous ZnO pattern

2014 ◽  
Vol 9 (1) ◽  
pp. 486 ◽  
Author(s):  
Bit-Na Go ◽  
Yang Kim ◽  
Kyoung suk Oh ◽  
Chaehyun Kim ◽  
Hak-Jong Choi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Si Solar Cells ◽  
Mesoporous Zno ◽  
Amorphous Si

Plasmonic Light Trapping in Amorphous Si Solar Cells Using Periodic Ag Nanodisk Structures

2014 ◽  
Vol 1627 ◽  
Author(s):  
Hidenori Mizuno ◽  
Hitoshi Sai ◽  
Koji Matsubara ◽  
Michio Kondo
Keyword(s):  
Solar Cells ◽  
Wavelength Range ◽  
Conversion Efficiency ◽  
External Quantum Efficiency ◽  
Light Trapping ◽  
Transfer Printing ◽  
Si Solar Cells ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Amorphous Si

ABSTRACTThis paper describes light trapping in superstrate-type amorphous Si solar cells incorporated with Ag nanostructures (nanodisks) fabricated by a transfer-printing approach. The changes in external quantum efficiency (EQE) and current-voltage characteristics were investigated by changing the position and size (thickness) of the Ag nanodisks in the cells fabricated on flat superstrates. It was confirmed that the optimized Ag nanodisk-configuration led to the enhanced EQE (20%) in the 600-800 nm wavelength range, and the enhanced EQE led to the improved overall conversion efficiency (7.5%) compared to the cell without Ag nanodisks (7.2%). However, the integration of the optimized Ag nanodisk-configuration with the cells fabricated on textured superstrates did not result in the enhanced EQE and conversion efficiency, suggesting further optical designs are necessary to exploit both texture- and plasmon-mediated light trapping effects.

Photocurrent increase in amorphous Si solar cells by increased reflectivity of LiF/Al electrodes

2012 ◽  
Vol 107 ◽  
pp. 259-262 ◽  
Author(s):  
T. Lanz ◽  
L. Fang ◽  
S.J. Baik ◽  
K.S. Lim ◽  
B. Ruhstaller
Keyword(s):  
Solar Cells ◽  
Si Solar Cells ◽  
Amorphous Si

scholarly journals Efficiency Enhancement of Nanoporous Silicon/Polycrystalline-Silicon Solar Cells by Application of Trenched Electrodes

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
Kuen-Hsien Wu ◽  
Chia-Chun Tang
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Polycrystalline Silicon ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Textured Surface ◽  
Surface Layers ◽  
Nanoporous Silicon ◽  
Si Solar Cells ◽  
A Tec

Trenched electrodes were proposed to enhance the short-circuit current and conversion efficiency of polycrystalline-silicon (poly-Si) solar cells with nanoporous silicon (NPS) surface layers. NPS films that served as textured surface layers were firstly prepared on heavily doped p+-type (100) poly-Si wafers by anodic etching process. Interdigitated trenches were formed in the NPS layers by a reactive-ion-etch (RIE) process and Cr/Al double-layered metal was then deposited to fill the trenches and construct trenched-electrode-contacts (TEC’s). Cells with TEC structures (called “TEC cells”) obtained 5.5 times higher short-circuit current than that of cells with planar electrode contacts (called “non-TEC cells”). Most significantly, a TEC cell achieved 8 times higher conversion efficiency than that of a non-TEC cell. The enhanced short-circuit current and conversion efficiency in TEC cells were ascribed to the reduced overall series resistance of devices. In a TEC cell, trenched electrodes provided photocurrent flowing routes that directly access the poly-Si substrates without passing through the high resistive NPS layers. Therefore, the application of NPS surface layers with trenched electrodes is a novel approach to development of highly efficient poly-Si solar cells.

Air-exposing microwave-assisted synthesis of CuInS2/ZnS quantum dots for silicon solar cells with enhanced photovoltaic performance

RSC Advances ◽  
2015 ◽  
Vol 5 (124) ◽  
pp. 102682-102688 ◽  
Author(s):  
Ming Hong ◽  
Tongtong Xuan ◽  
Jiaqing Liu ◽  
Ziyao Jiang ◽  
Yiwei Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Microwave Irradiation ◽  
Conversion Efficiency ◽  
Photovoltaic Performance ◽  
Composite Films ◽  
Silicon Solar Cells ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Si Solar Cells

CIS/ZnS QDs were synthesized by microwave irradiation in air. The fabricated QDs/PMMA composite films were first applied to Si solar cells to improve the conversion efficiency by 3.8%.

Effects of One-Dimensional Photonic Crystal on Thin Film Silicon Solar Cells

2013 ◽  
Vol 827 ◽  
pp. 49-53 ◽  
Author(s):  
Qi Wang ◽  
Hai Na Mo ◽  
Zi Qiao Lou ◽  
Ke Meng Yang ◽  
Yue Sun ◽  
...  
Keyword(s):  
Thin Film ◽  
Refractive Index ◽  
Solar Cells ◽  
Photonic Crystal ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Energy Conversion Efficiency ◽  
One Dimensional ◽  
Si Solar Cells ◽  
Refractive Index Difference

We have designed lateral contact thin film silicon-based solar cells with and without one-dimensional photonic crystals as back surface field layer. The photonic crystal comprises a distributed Bragg reflector (DBR) for trapping the light. Simulations demonstrate that energy conversion efficiency and short circuit current ISCfor c-Si solar cells with the photonic crystal structure are increased to 21.11% and 27.0 mA, respectively, from 18.33% and 22.8mA of the one without photonic crystal. In addition, the effects of DBRs consisting of different materials are investigated in our simulations. When the refractive index difference between sub-layers of the DBR is larger, the forbidden band width is broader, the reflectance of the DBR is higher, and more photons are reflected and trapped into the active region, then the absorption efficiency and the energy conversion efficiency of the solar cell are both increased. The bigger the refractive index difference of the DBRs sub-layers is, the broader the forbidden band width is. In addition, a-Si solar cells with and without DBR are also discussed.

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