Effect of top-cell CGS thickness on the performance of CGS/CIGS tandem solar cell

Elbar, Mourad; Tobbeche, S.; Merazga, Amar

doi:10.1016/j.solener.2015.08.029

Cited by 80 publications

(36 citation statements)

References 27 publications

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“…[ 22 ] The latter, unlike single‐junction devices, can utilize the solar spectrum more efficiently by reducing thermalization losses and can theoretically achieve efficiencies from 42% for a dual junction device under 1 sun up to 86% for an infinite‐junction device under concentrated light conditions. [ 23,24 ] Noteworthy examples include DSSC‐CIGS, [ 25 ] CGS‐CIGS, [ 26 ] Si‐CIGS, [ 27 ] CIGS‐perovskite, [ 27,28 ] CIGS‐hybrid perovskites, [ 24 ] and CIS‐perovskite. [ 29 ] Equally important, solution processing (non‐vacuum) techniques have the potential to fabricate absorbers on a lower thermal budget and by simpler and more cost‐effective production methods.…”

Section: Cu(inga)(sse)2 Photovoltaicsmentioning

confidence: 99%

Present Status of Solution‐Processing Routes for Cu(In,Ga)(S,Se)₂ Solar Cell Absorbers

Suresh

Uhl

2021

Advanced Energy Materials

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Photovoltaic technologies offer a sustainable solution to the challenge of meeting increasing energy demands. Chalcopyrite Cu(In,Ga)(S,Se)2, short CIGS—thin‐film solar cells—having intrinsically p‐type absorbers with a tunable direct bandgap—exhibits one of the highest stabilized power conversion efficiencies of 23.35%, utilizing absorbers typically fabricated via vacuum deposition methods. Research is increasingly devoted to absorbers deposited by solution processing techniques, which may inherently improve material usage, increase throughput, and lower financial barriers to commercialization. However, the performance of current devices with solution‐processed absorbers is still falling short of their vacuum‐processed counterparts with record power conversion efficiencies up to 18.7% reported to date. While hydrazine solvent‐based routes offer reduced residual impurities, their toxicity poses hindrances to widespread adoption. Alternatively, less toxic and environmentally friendly routes based on protic and aprotic solvents are being researched and are showing promising device efficiencies well above 14%. This review describes the current status of CIGS solar cell absorber layers fabricated by pure solution‐based deposition methods, provides a comparison of champion solution‐processed devices (with and without hydrazine), and offers an outlook for future improvements.

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Section: Cu(inga)(sse)2 Photovoltaicsmentioning

confidence: 99%

Present Status of Solution‐Processing Routes for Cu(In,Ga)(S,Se)₂ Solar Cell Absorbers

Suresh

Uhl

2021

Advanced Energy Materials

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“…II-VI thin films such as ZnO, CdO, ZnS, CdS and CdTe are used for many optoelectronic applications such as transparent conducting oxides (TCOs) and window layers in photodiodes and solar cells [1][2][3][4][5][6]. ZnO is one of the II-VI promising material which has been studied in recent years due to its unique properties such as wide-band gap and high transparency [6].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of ZnO Thin Film for Modeling the Effect of Its Defects on ZnO/Cu2O Solar Cell EQE

Chala¹,

Boumaraf²,

Bouhdjar³

et al. 2021

J. Nano- Electron. Phys.

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Zinc oxide (ZnO) is one of the best transparent conducting oxide (TCO) materials with a wide bandgap and good electrical and optical properties. Its low cost, nontoxicity and transparency in the optical region of the electromagnetic spectrum make it very promising candidate for solar cell applications. In this work, zinc acetate precursor was used to grow a ZnO thin film by using sol-gel spin-coating technique. The surface morphological study using scanning electron microscope (SEM) was carried out to confirm the growth pattern and crystal distribution. The optical properties, transmission (T), reflection (R), optical bandgap (Eg), refractive index (n), and extinction coefficient (k) were extracted and investigated to be used in the simulation of ZnO/Cu2O heterostructure solar cell, where ZnO thin film plays a double role: as the TCO window, as well as the emitter of the n-p junction. However, the solar cell showed weak external quantum efficiency (EQE) compared to those prepared by using zinc nitrate and diethyl zinc precursors. TCAD numerical simulation was used to clarify the origin of this weak EQE by taking into account two parameters. The first studied parameter is the root-mean-square interface roughness, RMS, in Haze modeling approach, H, which describes how much of incident light is scattered at the interface. The second studied parameter is the density of defects in the ZnO bulk with continuous distribution of states in its bandgap similar to an amorphous semiconductor made of tail bands and Gaussian distribution deep level bands. Consequently, and by adjusting and investigating the effect of the RMS and the constituents of the bandgap states, we were able to obtain a good agreement between simulated and measured EQE characteristics of the solar cell.

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“…Tandem solar cells are combined with a narrowbandgap bottom cell to absorb long-wavelength photons and a wide-bandgap top cell to absorb the short-wavelength photons. The top cell should be transparent to transmit unabsorbed photons [2,3].…”

Section: Introductionmentioning

confidence: 99%

Design of CuIn _{1−
y} Ga _y Se ₂ /Si _{1 −
x} Ge _x Tandem solar cells with controlled current matching

Gharibshahian

Orouji

2020

IET Optoelectronics

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Effect of top-cell CGS thickness on the performance of CGS/CIGS tandem solar cell

Cited by 80 publications

References 27 publications

Present Status of Solution‐Processing Routes for Cu(In,Ga)(S,Se)₂ Solar Cell Absorbers

Present Status of Solution‐Processing Routes for Cu(In,Ga)(S,Se)₂ Solar Cell Absorbers

Synthesis and Characterization of ZnO Thin Film for Modeling the Effect of Its Defects on ZnO/Cu2O Solar Cell EQE

Design of CuIn _{1−
y} Ga _y Se ₂ /Si _{1 −
x} Ge _x Tandem solar cells with controlled current matching

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Effect of top-cell CGS thickness on the performance of CGS/CIGS tandem solar cell

Cited by 80 publications

References 27 publications

Present Status of Solution‐Processing Routes for Cu(In,Ga)(S,Se)2 Solar Cell Absorbers

Present Status of Solution‐Processing Routes for Cu(In,Ga)(S,Se)2 Solar Cell Absorbers

Synthesis and Characterization of ZnO Thin Film for Modeling the Effect of Its Defects on ZnO/Cu2O Solar Cell EQE

Design of CuIn 1− y Ga y Se 2 /Si 1 − x Ge x Tandem solar cells with controlled current matching

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Product

Resources

About

Present Status of Solution‐Processing Routes for Cu(In,Ga)(S,Se)₂ Solar Cell Absorbers

Present Status of Solution‐Processing Routes for Cu(In,Ga)(S,Se)₂ Solar Cell Absorbers

Design of CuIn _{1−
y} Ga _y Se ₂ /Si _{1 −
x} Ge _x Tandem solar cells with controlled current matching