Improvement of the short-circuit current density and efficiency in micromorph tandem solar cells by an anti-reflection layer

2011 ◽  
Vol 520 (1) ◽  
pp. 550-553 ◽  
Author(s):  
Ping-Kuan Chang ◽  
Po-Tsung Hsieh ◽  
Fu-Ji Tsai ◽  
Chun-Hsiung Lu ◽  
Chih-Hung Yeh ◽  
...  
Keyword(s):  
Solar Cells ◽  
Current Density ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Tandem Solar Cells

scholarly journals Numerical Simulation of Luminescent Downshifting in Top Cell of Monolithic Tandem Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Mahfoud Abderrezek ◽  
Mohamed Fathi ◽  
Farid Djahli ◽  
Mohammed Ayad
Keyword(s):  
Numerical Simulation ◽  
Solar Cells ◽  
Polymethyl Methacrylate ◽  
Conversion Efficiency ◽  
Current Density ◽  
Organic Dyes ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Tandem Solar Cells

The increase in the conversion efficiency of monolithic tandem solar cells is limited by the short-circuit current density matching between the top and the bottom cells. Generally, the top cell presents the lowest current in the two subcells. In this paper, in order to increase the short-circuit current density in the top cell, we present a theoretical survey of the luminescence downshifting (LDS) approach for the design of monolithic tandem solar cells. The photovoltaic (PV) glass encapsulation material is replaced with a polymer material of polymethyl methacrylate (PMMA) type which is doped with diverse kinds of organic dyes. The performance of the n-p-p+ GaInP structure has been simulated as a function of the organic dyes. Gains achieved for the short-circuit current density and conversion efficiency are, respectively, 13.13% and 13.38%, under AM1.5G illumination spectra.

An asymmetric small molecule acceptor for organic solar cells with a short circuit current density over 24 mA cm−2

2020 ◽  
Vol 8 (31) ◽  
pp. 15984-15991 ◽  
Author(s):  
Fangfang Cai ◽  
Hongjian Peng ◽  
Honggang Chen ◽  
Jun Yuan ◽  
Jiefeng Hai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Current Density ◽  
Organic Solar Cells ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density

Acceptor Y22 with an asymmetric hexacyclic A–DA′D–A structure achieved a high PCE of 15.4% and a high Jsc of 24.37 mA cm−2, which are among the best values reported for asymmetric acceptor based binary organic solar cells.

Nanoimprint Photonic Crystal Film Enhanced Light-Trapping in a-Si Thin Film Solar Cells

2011 ◽  
Vol 110-116 ◽  
pp. 497-502
Author(s):  
Wei Ping Chu ◽  
Fuh Shyang Juang ◽  
Jian Shian Lin ◽  
Tien Chai Lin ◽  
Chen Wei Kuo
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Photonic Crystals ◽  
Current Density ◽  
Light Trapping ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Thin Film Solar Cells ◽  
Uv Lamp

We utilize photonic crystals to enhanced lighttrapping in a-Si:H thin film solar cells. The photonic crystals effectively increase Haze ratio of glass and decrease reflectance of a-Si:H solar cells. Therefore, increase the photon path length to obtain maximum absorption of the absorber layer. The photonic crystals can effective in harvesting weakly absorbing photons with energies just above the band edge. We were spin coated UV glue on the glass, and then nanoimprint of photonic crystals pattern. Finally, used UV lamp was curing of UV glue on the glass. When the 45∘composite photonic crystals structures, the haze was increase to 87.9 %, resulting the short circuit current density and efficiency increasing to 13.96 mA/cm2 and 7.39 %, respectively. Because 45∘composite photonic crystals easy to focus on the point of light lead to the effect of scattering can’t achieve. So, we designs 90∘V-shaped photonic crystals structures to increase scattering. When the 90∘V-shaped photonic crystals structures, the Haze was increase to 93.9 %. Therefore, the short circuit current density and Efficiency increasing to 15.62 mA/cm2 and 8.09 %, respectively. We observed ~35 % enhancement of the short-circuit current density and ~31 % enhancement of the conversion efficiency.

scholarly journals Improvement of short circuit current density by intermolecular interaction between polymer backbones for polymer solar cells

2016 ◽  
Vol 49 (1) ◽  
pp. 177-187 ◽  
Author(s):  
Tae Ho Lee ◽  
Min Hee Choi ◽  
Sung Jae Jeon ◽  
Seung Jun Nam ◽  
Yong Won Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Intermolecular Interaction ◽  
Current Density ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density
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