Effective enhancement of conversion efficiency for a-Si thin-film solar cell using pattern-array dendritic silver nanostructure

2014 ◽  
Author(s):  
Wei-Hsun Lai ◽  
Chi-Pin Chiu ◽  
Der-Jun Jan ◽  
Wei-Hsiu Hsu ◽  
Shih-Shou Lo
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Thin Film Solar Cell ◽  
Silver Nanostructure ◽  
Si Thin Film

scholarly journals Analysis of the High Conversion Efficienciesβ-FeSi2and BaSi2n-i-p Thin Film Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Jung-Sheng Huang ◽  
Kuan-Wei Lee ◽  
Yu-Hsiang Tseng
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Current Density ◽  
Thin Film Solar Cell ◽  
Thin Film Solar Cells ◽  
Drift Current ◽  
Current Densities ◽  
Si Thin Film

Bothβ-FeSi2and BaSi2are silicides and have large absorption coefficients; thus they are very promising Si-based new materials for solar cell applications. In this paper, the dcI-Vcharacteristics of n-Si/i-βFeSi2/p-Si and n-Si/i-BaSi2/p-Si thin film solar cells are investigated by solving the charge transport equations with optical generations. The diffusion current densities of free electron and hole are calculated first. Then the drift current density in the depletion regions is obtained. The total current density is the sum of diffusion and drift current densities. The conversion efficiencies are obtained from the calculatedI-Vcurves. The optimum conversion efficiency of n-Si/i-βFeSi2/p-Si thin film solar cell is 27.8% and that of n-Si/i-BaSi2/p-Si thin film solar cell is 30.4%, both are larger than that of Si n-i-p solar cell (ηis 20.6%). These results are consistent with their absorption spectrum. The calculated conversion efficiency of Si n-i-p solar cell is consistent with the reported researches. Therefore, these calculation results are valid in this work.

MULTI-SCALE SIMULATION OF GRAIN BOUNDARY STRUCTURE EFFECTS IN POLY-Si THIN FILM SOLAR CELL

2013 ◽  
Vol 24 (07) ◽  
pp. 1350045 ◽  
Author(s):  
CHENGXIANG LI ◽  
WENLAI HUANG ◽  
CHAOFENG HOU ◽  
WEI GE
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Grain Boundary ◽  
Conversion Efficiency ◽  
Thin Film Solar Cell ◽  
Cell Performance ◽  
Thickness Effect ◽  
Atomic Structures ◽  
Multi Scale ◽  
Si Thin Film

The atomic structures of grain boundary (GB) and their effect on the performance of poly- Si thin film solar cell are studied by multi-scale simulations. First, the atomic structures of various GBs are calculated using molecular dynamics. Subsequently, the energy band diagram are obtained by ab-initio calculations. Then, finite difference method is performed to obtain solar cell performance. The results show that the Σ5 (twist) GB can greatly enhance the carriers recombination and results in small short-circuit current density (J SC ) and open-circuit voltage (V OC ). However, the Σ17 (twist and tilt) GBs have little influence on the cell performance. Also revealed in the simulations is that the GB near the p–n junction leads to very small J SC and V OC . When the distance between GB and p–n junction increases from about 1.10 μm to 3.65 μm, the conversion efficiency increases by about 29%. The thickness effect of solar cell containing the Σ5 (twist) GB on the cell performance is also studied. The results show that the conversion efficiency and J SC increase rapidly as the thickness increases from about 5.2 μm to 40 μm. When the thickness ranges from about 40 μm to 70 μm, the efficiency and the J SC both increase gradually and reach their own peak values at about 70 μm. When the thickness exceeds 70 μm, the efficiency and J SC both decrease gradually. However, the V OC keeps increasing with increase in thickness. The effects of GB on the carrier transport and recombination processes are discussed to understand the above results.

Cu(In,Ga)(S,Se)2 Thin Film Solar Cell with 10.7% Conversion Efficiency Obtained by Selenization of the Na-Doped Spray-Pyrolyzed Sulfide Precursor Film

2015 ◽  
Vol 7 (12) ◽  
pp. 6472-6479 ◽  
Author(s):  
Wilman Septina ◽  
Masaaki Kurihara ◽  
Shigeru Ikeda ◽  
Yasuhiro Nakajima ◽  
Toshiyuki Hirano ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Thin Film Solar Cell ◽  
Precursor Film

Polycrystalline Si thin-film solar cell prepared by solid phase crystallization (SPC) method

1994 ◽  
Vol 34 (1-4) ◽  
pp. 285-289 ◽  
Author(s):  
Takao Matsuyama ◽  
Toshiaki Baba ◽  
Tsuyoshi Takahama ◽  
Shinya Tsuda ◽  
Shoichi Nakano
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Thin Film Solar Cell ◽  
Solid Phase ◽  
Solid Phase Crystallization ◽  
Si Thin Film

Broad-band anti-reflection coupler for a : Si thin-film solar cell

2007 ◽  
Vol 40 (3) ◽  
pp. 754-758 ◽  
Author(s):  
Shih-Shou Lo ◽  
Chii-Chang Chen ◽  
Frank Garwe ◽  
Thomas Pertch
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Thin Film Solar Cell ◽  
Broad Band ◽  
Si Thin Film
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