Ligand sensitized strong luminescence from Eu3+-doped LiYF4 nanocrystals: a photon down-shifting strategy to increase solar-to-current conversion efficiency

2017 ◽  
Vol 46 (29) ◽  
pp. 9646-9653 ◽  
Author(s):  
Tuhin Samanta ◽  
Sourav Kanti Jana ◽  
Athma E. Praveen ◽  
Venkataramanan Mahalingam
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
Polymeric Film ◽  
Uv Absorbance ◽  
Red Emission ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Si Solar Cell ◽  
Strong Luminescence ◽  
Shifting Strategy

The broad UV absorbance and intense red emission of TPB capped Eu3+ doped LiYF4 NCs is used to enhance the Si solar cell efficiency by depositing the NCs embedded polymeric film onto the Si solar cell.

scholarly journals Water-soluble ZnSe/ZnS:Mn/ZnS quantum dots convert UV to visible light for improved Si solar cell efficiency

2021 ◽  
Author(s):  
Hisaaki Nishimura ◽  
Takaya Maekawa ◽  
Kazushi Enomoto ◽  
Naoteru Shigekawa ◽  
Tomomi Takagi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solar Cell ◽  
Visible Light ◽  
Solar Spectrum ◽  
Water Soluble ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Si Solar Cell ◽  
Si Solar Cells

The sensitivity of Si solar cells to the UV portion of the solar spectrum is low, and must be increased to further improve their efficiencies.

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.

scholarly journals Frequency Conversion Layers for Si Solar Cell Efficiency Improvement

2017 ◽  
pp. 85-91
Author(s):  
Fabrice Gourbilleau ◽  
Lucile Dumont ◽  
Julien Cardin ◽  
Anaïs Gouesmel ◽  
Ing-Song Yu ◽  
...  
Keyword(s):  
Solar Cell ◽  
Frequency Conversion ◽  
Efficiency Improvement ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Si Solar Cell

Fabrication of Novel Ag-Paste and Evaluation of its Electrical Properties in Bulk-Si Solar Cell

2012 ◽  
Vol 724 ◽  
pp. 393-396 ◽  
Author(s):  
Ji Hyun Jeong ◽  
Sung Jin Kim ◽  
Chang Rok Son ◽  
Soon Chul Ur ◽  
Soon Young Kweon
Keyword(s):  
Solar Cell ◽  
Glass Frit ◽  
The Other ◽  
Shunt Resistance ◽  
Silver Paste ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Si Solar Cell ◽  
Ag Paste ◽  
Free Glass

Two kinds of Ag-pastes were prepared for integrating the bulk Si solar cell. One is the Ag-paste mixed with Pb-based glass frit and the other is that mixed with Pb-free glass frit. The major components in the silver paste were 84 wt% Ag, 2 wt% glass frit, 11 wt% solvent of buthyl-cabitol acetate, and 2 wt% the other additives. After fabricating the Ag-pastes, they were coated on the SiNx/n+/p- stacks of a commercial mono-Si substrate. The solar cell efficiency was 17.6% in case of the silver paste mixed with Pb-based glass frit, which was one of the world-best records in the technology. By the way, the efficiency was 16.2% in the solar cell integrated with the silver paste mixed with Pb-free glass frit. The lower performance in the Pb-free Ag-paste was caused by the higher serial resistance and the lower shunt resistance in comparison with the Pb-containing Ag paste.

Synthesis of Cu(In,Ga)(S,Se)2 thin films using an aqueous spray-pyrolysis approach, and their solar cell efficiency of 10.5%

2015 ◽  
Vol 3 (8) ◽  
pp. 4147-4154 ◽  
Author(s):  
Md. Anower Hossain ◽  
Zhang Tianliang ◽  
Lee Kian Keat ◽  
Li Xianglin ◽  
Rajiv R. Prabhakar ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cell ◽  
Spray Pyrolysis ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Large Scale ◽  
Power Conversion ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

An aqueous spray-pyrolysis approach for synthesizing Cu(In,Ga)(S,Se)2 thin film, which leads to 10.54% power conversion efficiency in solar cell, and shows ease of fabrication of films in large-scale at a much cheaper cost.

CuO nanoleaves enhance the c-Si solar cell efficiency

2014 ◽  
Vol 2 (19) ◽  
pp. 6796-6800 ◽  
Author(s):  
Yusheng Xia ◽  
Xuxin Pu ◽  
Jie Liu ◽  
Jie Liang ◽  
Pujun Liu ◽  
...  
Keyword(s):  
Solar Cell ◽  
Optical Loss ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Si Solar Cell

The CuO NL/c-Si structure both reduces the optical loss and recombination and distinctly enhances the c-Si solar cell efficiency.

Enhancement of Si solar cell efficiency using ZnO nanowires with various diameters

2018 ◽  
Vol 5 (1) ◽  
pp. 015040 ◽  
Author(s):  
A Gholizadeh ◽  
A Reyhani ◽  
P Parvin ◽  
S Z Mortazavi ◽  
M Mehrabi
Keyword(s):  
Solar Cell ◽  
Zno Nanowires ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Si Solar Cell

scholarly journals Influence of Front and Back Contacts on Photovoltaic Performances of p-n Homojunction Si Solar Cell: Considering an Electron-Blocking Layer

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Md. Feroz Ali ◽  
Md. Faruk Hossain
Keyword(s):  
Solar Cell ◽  
Work Function ◽  
High Efficiency ◽  
Blocking Layer ◽  
Back Contact ◽  
Electron Blocking Layer ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Si Solar Cell ◽  
Proposed Model

In this simultion work, the effect of front and back contacts of p-n homojunction Si solar cell with an electron-blocking layer (EBL) has been studied with the help of a strong solar cell simulator named AMPS-1D (analysis of microelectronic and photonic structures one dimensional). Without the effect of these contact parameters, low solar cell efficiency has been observed. Fluorine-doped tin oxide (FTO) with high work function (5.45 eV) has been used as the front contact to the proposed solar cell. Zinc (Zn) metal which has a work function of 4.3 eV has been used as the back contact of the proposed model. With FTO as the front contact and Zn as the back contact, the optimum efficiency of 29.275% (Voc = 1.363 V, Jsc = 23.747 mA/cm2, FF = 0.905) has been observed. This type of simple Si-based p-n homojunction solar cell with EBL of high efficiency has been proposed in this paper.

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