scholarly journals New insight into rare-earth doped gadolinium molybdate nanophosphor assisted broad spectral converters from UV to NIR for silicon solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (31) ◽  
pp. 24729-24736 ◽  
Author(s):  
Pawan Kumar ◽  
Bipin Kumar Gupta
Keyword(s):  
Solar Cells ◽  
Rare Earth ◽  
Solar Cell ◽  
Silicon Solar Cells ◽  
Solar Cell Application ◽  
Si Solar Cell ◽  
Gadolinium Molybdate ◽  
Rare Earth Doped ◽  
Insight Into

Demonstration of novel rare-earth doped gadolinium molybdate nanophosphor assisted broad spectral converters from UV to NIR for Si-solar cell application.

scholarly journals Optimization of Antireflection Coating Design Using PC1D Simulation for c − Si Solar Cell Application

Electronics ◽  
2021 ◽  
Vol 10 (24) ◽  
pp. 3132
Author(s):  
Maruthamuthu Subramanian ◽  
Omar M. Aldossary ◽  
Manawwer Alam ◽  
Mohd Ubaidullah ◽  
Sreedevi Gedi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Short Circuit ◽  
Single Layer ◽  
Antireflection Coating ◽  
Silicon Solar Cells ◽  
Refractive Indices ◽  
Solar Cell Application ◽  
The Impact

Minimizing the photon losses by depositing an anti-reflection layer can increase the conversion efficiency of the solar cells. In this paper, the impact of anti-reflection coating (ARC) for enhancing the efficiency of silicon solar cells is presented. Initially, the refractive indices and reflectance of various ARC materials were computed numerically using the OPAL2 calculator. After which, the reflectance of SiO2,TiO2,SiNx with different refractive indices (n) were used for analyzing the performance of a silicon solar cells coated with these materials using PC1D simulator. SiNx and TiO2 as single-layer anti-reflection coating (SLARC) yielded a short circuit current density (Jsc) of 38.4 mA/cm2 and 38.09mA/cm2 respectively. Highest efficiency of 20.7% was obtained for the SiNx ARC layer with n=2.15. With Double-layer anti-reflection coating (DLARC), the Jsc improved by ∼0.5 mA/cm2 for SiO2/SiNx layer and hence the efficiency by 0.3%. Blue loss reduces significantly for the DLARC compared with SLARC and hence increase in Jsc by 1 mA/cm2 is observed. The Jsc values obtained is in good agreement with the reflectance values of the ARC layers. The solar cell with DLARC obtained from the study showed that improved conversion efficiency of 21.1% is obtained. Finally, it is essential to understand that the key parameters identified in this simulation study concerning the DLARC fabrication will make experimental validation faster and cheaper.

scholarly journals The Viability of Organic Dyes in Luminescent Down-Shifting Layers for the Enhancement of Si Solar Cell Efficiency

2020 ◽  
Vol 995 ◽  
pp. 71-76
Author(s):  
Aaron Glenn ◽  
Conor Mc Loughlin ◽  
Hind Ahmed ◽  
Hoda Akbari ◽  
Subhash Chandra ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Organic Dyes ◽  
Polyvinyl Butyral ◽  
High Energy ◽  
Silicon Solar Cells ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Si Solar Cell ◽  
Si Solar Cells

The main energy losses in solar cells are related to spectral losses where high energy photons are not used efficiently, and energy is lost via thermalization which reduces the solar cell’s overall efficiency. A way to tackle this is to introduce a luminescent down-shifting layer (LDS) to convert these high energy photons into a lower energy bracket helping the solar cell to absorb them and thus generating a greater power output. In this paper, lumogen dye Violet 570 has been used as LDS coated films of 10μm and 60μm placed on top of Si solar cells. The dye was incorporated into polymer films of Polyvinyl Butyral (PVB) and Polymethyl Methacrylate (PMMA) after which they were tested for their absorption, transmission and emission properties. Once optimised layers had been determined, they were deposited directly onto silicon solar cells and the external quantum efficiency (EQE) of the Si solar cells were measured with and without the LDS layers. The resulting graphs have shown an increase of up to 2.9% in the overall EQE efficiency after the lumogen films had been applied.

Efficiency Limitations of Multicrystalline Silicon Solar Cells Due to Defect Clusters

2005 ◽  
Vol 864 ◽  
Author(s):  
Bhushan Sopori ◽  
Chuan Li ◽  
S. Narayanan ◽  
D. Carlson
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Multicrystalline Silicon ◽  
Silicon Solar Cells ◽  
Efficiency Loss ◽  
Defect Clusters ◽  
Si Solar Cell ◽  
Solar Cell Fabrication ◽  
Cell Fabrication ◽  
Large Clusters

AbstractMulticrystalline Si wafers used in commercial solar cell fabrication exhibit a tendency to form large “clusters” of defects, which remain laterally separated from each other. Defect clusters are also sites of impurity precipitation. Because precipitated impurities cannot be gettered by the conventional processes used in Si solar cell fabrication, defect clusters constitute low-performing regions in the cell. They shunt the device and constitute the primary efficiency limiting mechanism in current solar cells. We show that the efficiency loss caused by defect clusters can exceed 3–4 absolute points.

Polymethylmethacrylate coating on aligned carbon nanotube–silicon solar cells for performance improvement

2014 ◽  
Vol 2 (12) ◽  
pp. 4140-4143 ◽  
Author(s):  
Ru Li ◽  
Jiangtao Di ◽  
Zhenzhong Yong ◽  
Baoquan Sun ◽  
Qingwen Li
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Carbon Nanotube ◽  
Performance Improvement ◽  
Silicon Solar Cells ◽  
Si Solar Cell

PMMA coating on aligned CNT–Si solar cell with efficiency of 13% after doping by NO2.

scholarly journals Hybrid(Luminescent and Fresnel ) Concentrators to Improve Solar Panel Conversion Efficiency

2011 ◽  
Vol 8 (2) ◽  
pp. 577-580 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Crystalline Silicon ◽  
Spectral Response ◽  
Silicon Solar Cells ◽  
The Sun ◽  
Crystalline Silicon Solar Cells ◽  
Si Solar Cell ◽  
Irradiance Spectrum

The spectral response of the Si solar cell does not coincidence with the sun irradiance spectrum, so the efficiency of the Si solar cell is not high. To improve the Si solar cell one try to make use of most region of the sun spectrum by using dyes which absorb un useful wavelengths and radiate at useful region of spectrum (by stock shift). Fluorescence's dye is used as luminescent concentrator to increase the efficiency of the solar cell. The results show that the performance efficiency and out power for crystalline silicon solar cells are improved.

Upconversion mechanisms in rare-earth doped glasses to improve the efficiency of silicon solar cells

2011 ◽  
Vol 95 (7) ◽  
pp. 1671-1677 ◽  
Author(s):  
F. Lahoz ◽  
C. Pérez-Rodríguez ◽  
S.E. Hernández ◽  
I.R. Martín ◽  
V. Lavín ◽  
...  
Keyword(s):  
Solar Cells ◽  
Rare Earth ◽  
Silicon Solar Cells ◽  
Doped Glasses ◽  
Rare Earth Doped

scholarly journals Three-Terminal Amorphous Silicon Solar Cells

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Cheng-Hung Tai ◽  
Chu-Hsuan Lin ◽  
Chih-Ming Wang ◽  
Chun-Chieh Lin
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Electric Field ◽  
Amorphous Silicon ◽  
Silicon Solar Cells ◽  
Thickness Optimization ◽  
Material Parameters ◽  
Si Solar Cell ◽  
Average Electric Field ◽  
Recombination Centers

Many defects exist within amorphous silicon since it is not crystalline. This provides recombination centers, thus reducing the efficiency of a typical a-Si solar cell. A new structure is presented in this paper: a three-terminal a-Si solar cell. The new back-to-back p-i-n/n-i-p structure increased the average electric field in a solar cell. A typical a-Si p-i-n solar cell was also simulated for comparison using the same thickness and material parameters. The 0.28 μm-thick three-terminal a-Si solar cell achieved an efficiency of 11.4%, while the efficiency of a typical a-Si p-i-n solar cell was 9.0%. Furthermore, an efficiency of 11.7% was achieved by thickness optimization of the three-terminal solar cell.

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