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

Chang, Ping; Hsieh, Po Tsung; Tsai, Fu Ji; Lu, Chun-Shien; Yeh, Chih Hung; Houng, Mau Phon

doi:10.1016/j.tsf.2011.06.086

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…The tandem solar cells with the anti-reflection layer show the increased short-circuit current density of the solar cells due to increased light transmittance from air/glass interface. 21 The light enters the solar cell through transparent conductive oxide Anti Reflection Coating (ARC) layer of ITO. In order to improve carrier generation in top sub-cell, an intermediate reflector of ZnO is inserted between top and bottom sub-cells.…”

Section: Modeling Of Micromorph Cellmentioning

confidence: 99%

Optimization of absorber layers' thickness in a Si micromorph solar cell for current matching with intermediate ZnO reflector

Bohra

Panchal

2013

Journal of Renewable and Sustainable Energy

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In a micromorph silicon (Si) solar cell, the optimum performance is decided by the top hydrogenated amorphous Si (a-Si:H) and the bottom microcrystalline Si (lc-Si) absorber layer thicknesses. This paper investigates the performance of the micromorph cell using modeling and simulation studies in MATLAB. The short circuit current density (J sc ), open circuit voltage (V oc ), fill factor, and efficiency (g) of the cells are analysed by varying thicknesses of the top a-Si:H and the bottom lc-Si absorber layers with and wihtout ZnO Intermidiate Reflector (ZIR). ZIR improves current density of top a-Si:H i-layer and hence thickness reduction of top subcell i-layer. Due to this, the light induced degradation can be minimised. For each top a-Si:H layer thickness, the bottom lc-Si layer thickness is varied in steps. The micromorph structure is numerically solved using Newton-Raphson technique and current density-voltage characteristics for top a-Si:H, bottom lc-Si:H sub-cells, and composite cell are obtained. One of the combinations with the top a-Si:H layer with thickness of 300 nm and the bottom lc-Si layer with thickness of 3.25 lm gives the best efficiency of 13.12% with ZIR. The simulation study performed here can be extended to design third generation multijunction Si quantum dots solar cells.

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Section: Modeling Of Micromorph Cellmentioning

confidence: 99%

Optimization of absorber layers' thickness in a Si micromorph solar cell for current matching with intermediate ZnO reflector

Bohra

Panchal

2013

Journal of Renewable and Sustainable Energy

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“…One method to reduce front surface reflection is the use of anti-reflective coating (ARC) mainly of Magnesium Flouride and porous Silicon Oxides [1,2]. Another method to reduce the front surface reflection is to use structures which are antireflecting [3], that lower the refractive index at interface between air and glass surfaces by the use of either a porous or a textured glass on a sub-wavelength scale. One other method is the use of anti-reflective textures that are geometric that allow multiple rebounding of the incident light thus increasing the transmittance through the glass to the active layers.…”

Section: Introductionmentioning

confidence: 99%

Efficient Polymer Scattering Layer Fabrication and their Application in Electrical Properties Enhancement of Perovskite/Silicon Tandem Solar Cells

Ali

Hassan³

et al. 2018

KEM

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Tandem Solar Cells with Silicon as one of its constituents have flat surfaces (surfaces without texturing). That is why flat surfaces Solar cells have got quite importance. But the issue with the flat surfaces is the high reflection loss (flat) and poor light trapping (no-texturing) in the cells. So, some scattering film, other than direct texturing, that is polydimethylsiloxane (PDMS) polymer with the texture is used. The optimized PDMS film here is the random pyramidal film because random pyramidal PDMS films have a drop of 56.6% in reflectance used on polished Silicon while iso-textured and inverted pyramids have 51.55% and 48.47% respectively. This PDMS film with random textures when applied to 2-terminal monolithic perovskite/Silicon tandem, its external quantum efficiency shows an increase of 1.12mA/cm2in the short-circuit current and reflection loss reduces by 4.1 mA/cm2.

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Physical principles of losses in thin film solar cells and efficiency enhancement methods

Dhankhar¹,

Singh²,

Singh³

2014

Renewable and Sustainable Energy Reviews

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

Cited by 6 publications

References 8 publications

Optimization of absorber layers' thickness in a Si micromorph solar cell for current matching with intermediate ZnO reflector

Optimization of absorber layers' thickness in a Si micromorph solar cell for current matching with intermediate ZnO reflector

Efficient Polymer Scattering Layer Fabrication and their Application in Electrical Properties Enhancement of Perovskite/Silicon Tandem Solar Cells

Physical principles of losses in thin film solar cells and efficiency enhancement methods

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