A new proposal for Si tandem solar cell: Significant efficiency enhancement in 3C–SiC/Si

Heidarzadeh, Hamid; Baghban, Hamed; Rasooli, H.; Dolatyari, Mahboubeh; Rostami, Ali

doi:10.1016/j.ijleo.2013.08.018

Cited by 31 publications

(14 citation statements)

References 17 publications

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“…The latter value is given by the for mula (3) where C p,s = 10 -31 cm 6 /s and C n,s = 2.8 × 10 -31 + 2.5 × 10 -22 /Δp cm 6 /s. Wrong expressioon which does not correspond to that in russian version.…”

Section: Analysis Of the Possibility Of High Efficiency Photovoltaic mentioning

confidence: 99%

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Analysis of the possibility of high-efficiency photovoltaic conversion in tandem heterojunction thin-layer solar cells

et al. 2015

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The possibility of creating tandem heterojunction with intrinsic thin layer (HIT) solar cells pos sessing photovoltaic conversion efficiency greater than that of the best existing single junction HIT structures is analyzed. It is established that, because of small carrier lifetimes and high degrees of compensation, the use of amorphous silicon in tandem HIT cells cannot provide for record high conversion efficiency. Key param eters of the material for a widegap p-n junction on the frontal side of tandem solar cells are determined that will allow a photovoltaic conversion efficiency above 25% under AM1.5 conditions to be reached.

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Section: Analysis Of the Possibility Of High Efficiency Photovoltaic mentioning

confidence: 99%

“…The results of recent simulation [3] of the parameters of HIT elements using standard program packages do not allow this problem to be solved, since the calculated value of η ≈ 20% for a single junction HIT solar cell signifi cantly differs from really achieved conversion efficien cies (24.7%).…”

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confidence: 99%

Analysis of the possibility of high-efficiency photovoltaic conversion in tandem heterojunction thin-layer solar cells

et al. 2015

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“…The efficiency of a solar cell is determined as the fraction of incident power which is converted to electricity and is defined as [13,14]:…”

Section: Introductionmentioning

confidence: 99%

Modeling of Solar Cell Efficiency Improvement Using Pyramid Grating in Single Junction Silicon Solar Cell

Heidarzadeh

Dolatyari

Rostami

et al. 2015

2nd International Congress on Energy Efficiency and Energy Related Materials (ENEFM2014)

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In order to manipulate light in more effective ways than conventional optical materials to convert extra and cheap electrical energy from the sunlight we focused on surface and backside of solar cells. At first this paper concentrate on solar cell performance enhancement by introducing pyramids at the top of the wafer based crystalline silicon solar cells. The optimization of used pyramids as well as their height and width were performed. The efficiency of 24.45 % has been obtained for a cell (thickness of 50 µm) with surface pyramids, while efficiency of 19.53 % has been obtained for flat surface cell. Simulation results show improvement of performance when pyramids are used. Then we will focus on thickness reduction by manipulating the backside of the cell. Reducing the overall cost per watt is thus one of the major goals of this paper. As the thickness of the absorbing region is reduced, however, the absorption significantly decreases at energies close to the electronic bandgap of the semiconductor. This is particularly a problem for thin-film silicon cells. Devices based on crystalline silicon have poor absorption near the bandgap. Light trapping schemes are thus needed to enhance light absorption. In this paper light trapping is achieved using a micron-sized pyramidal surface texture and backside filters that causes scattering of light into the solar cell over a large angular range, thereby enhance the effective light path length. So this paper investigated the use of antireflection coating and back reflectors to improve thin film solar cell performances. Finally, efficiency of upper than 24 % is obtained for 8 µm thin film silicon cell with rear side filter.

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“…3C-SiC/Si heterojunctions have already been studied in the domain of power diodes, as window layer or as emitter for photovoltaic cells in several configurations [3][2] [4]. The opportunity to make 3C-SiC/Si tandem cells has been studied theoretically [5][6], leading to a theoretical efficiency of 26%, but at our knowledge, this type of cells has not been realized yet. The first step in order to realize 3C-SiC/Si tandem cells is to masterize the deposition of 3C-SiC on Si wafers.…”

Section: Introductionmentioning

confidence: 99%

New 3C Silicon Carbide on Silicon Hetero-Junction Solar Cells for UV Collection enhancement

Touré¹,

Bérenguier²,

Ottaviani³

et al. 2014

MRS Proc.

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An actual trend to enhance solar cells efficiency is to build multijunction cells, creating a bandshape wavelength collection. However, the best multijuction cells are actually made of III-V compounds when silicon and its alloys don't lead to high efficiency devices. In this article, we study a 3C-SiC/Si heterojunction as a first step for 3C-SiC/Si tandem cells. Four samples were fabricated by depositing 3C-SiC on Si wafers with different SiC doping levels. Simulations of the structures are performed, as well as optical and electrical characterizations of the heterojunction cells.

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A new proposal for Si tandem solar cell: Significant efficiency enhancement in 3C–SiC/Si

Cited by 31 publications

References 17 publications

Analysis of the possibility of high-efficiency photovoltaic conversion in tandem heterojunction thin-layer solar cells

Analysis of the possibility of high-efficiency photovoltaic conversion in tandem heterojunction thin-layer solar cells

Modeling of Solar Cell Efficiency Improvement Using Pyramid Grating in Single Junction Silicon Solar Cell

New 3C Silicon Carbide on Silicon Hetero-Junction Solar Cells for UV Collection enhancement

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