Enhanced spectral response of CIGS solar cells with anti-reflective subwavelength structures and quantum dots

Jeong, Ho-Jung; Kim, Ye-Chan; Lee, Soo Kyung; Yun, Ju-Hyung; Jang, Jae‐Hyung

doi:10.1016/j.solmat.2019.01.044

Cited by 25 publications

(15 citation statements)

References 54 publications

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“…[ 1–5 ] With advantages of high natural abundance, high optical absorption coefficient (≈10 5 cm −1 ), and non‐toxicity of the constituent elements, [ 6–8 ] antimony chalcogenide solar cells are viewed as highly potential alternatives to the traditional thin film production technologies such as CdTe and Cu(In,Ga)Se 2 solar cells. [ 9,10 ] An attractive feature of this material is its ability to tune its bandgap from about 1.1 to 1.7 eV by adjusting the S/(S+Se) ratio, [ 11,12 ] indicating that it well matches the desired bandgap according to the Shockley–Queisser limit; [ 13 ] therefore, the cell performance can be improved. Furthermore, it possesses a high‐saturated vapor pressure that offers a promising route for a cost‐efficient and industrially high‐throughput vapor transport deposition process (VTD) at a large scale, developed in the most commercially successful CdTe photovoltaics technologies.…”

Section: Introductionmentioning

confidence: 99%

Vapor Transport Deposition of Highly Efficient Sb₂(S,Se)₃ Solar Cells via Controllable Orientation Growth

Pan

Guo

et al. 2021

Adv Funct Materials

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The vapor transport deposition of quasi‐one‐dimensional antimony selenosulfide (Sb2(S,Se)3) has recently attracted increasing research interest for the inexpensive, high‐throughput production of thin film photovoltaic devices. Further improvements in Sb2(S,Se)3 solar cell performance urgently require the identification of processing strategies to control the orientation, however the growth mechanism of high quality absorbers is still not completely clear. Herein, a facile and general vapor transport deposition approach to precisely control the growth of large‐grained dense Sb2(S,Se)3 films with good crystallization and preferred orientation via the source vapor speed is utilized. It is found that defect activation energy rather than the defect concentration plays a decisive role in the Sb2(S,Se)3 photovoltaic performance. Admittance spectroscopy analysis is used to obtain efficient Sb2(S,Se)3 solar cells. By employing dual‐source coordinations to optimize the absorber layer a power conversion efficiency of 8.17% is obtained which is the highest efficiency for Sb2(S,Se)3 solar cells fabricated by vapor transport technology. This study suggests that there are other opportunities for gaining deeper a understanding of the defect physics and carrier recombination mechanisms in other highly oriented low‐dimensional materials to achieve improved device performance.

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Section: Introductionmentioning

confidence: 99%

Vapor Transport Deposition of Highly Efficient Sb₂(S,Se)₃ Solar Cells via Controllable Orientation Growth

Pan

Guo

et al. 2021

Adv Funct Materials

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“…All acquired data result from averaging the outcomes of 5 measurements each, to ensure the reliability of the obtained values. It is observed that the PCE displays an improvement (from 15.06% to 15.14%) after coating with a pure EVA film in comparison with the bare cell, which mainly arises from the decrease of light reflection and some small error [33,39]. For the Eu (ND) 4 CTAC/EVA films, the PCE prominently increases with the increase of doping concentration of the complex reaching a maximum at 0.7%, which is then followed by a decrease (Fig.…”

Section: Resultsmentioning

confidence: 99%

Photovoltaic efficiency enhancement of polycrystalline silicon solar cells by a highly stable luminescent film

Wang

Gawryszewska-Wilczynsk

Zhang

et al. 2020

Sci. China Mater.

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Si-based solar cells have dominated the entire photovoltaic market, but remain suffering from low power conversion efficiency (PCE), partly because of the poor utilization of ultraviolet (UV) light. Europium(III) (Eu 3+) complexes with organic ligands are capable of converting UV light into strong visible light, which makes them ideal light converter to increase the efficiency of solar cells. However, the low stability of such complexes seriously hampers their practical applications. In this work, we report a highly stable and luminescent ethylene-vinyl acetate (EVA) copolymer film consisting of a Eu 3+ complex as a down-shift material, Eu (ND) 4 CTAC (ND = 4-hydroxy-2-methyl-1,5-naphthyridine-3carbonitrile, CTAC = hexadecyl trimethyl ammonium chloride), coating of which onto the surface of large area polycrystalline silicon solar cells (active area: 110 cm 2) results in an increase of PCE from 15.06% to 15.57%. Remarkable stability of the luminescent film was also demonstrated under lightsoaking test for 500 h, and no obvious luminescence degradation can be observed. The remarkable enhancement of the conversion efficiency by 0.51% absolute on such a large active area, together with the high stability of the luminescent film, demonstrates a prospect for the implementation of the films in photovoltaic industry.

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“…So, there is an increased recall to use abundant, inexpensive, and environmentally friendly materials in thin-film solar cells. CuInGaSe2 (CIGS) has been used as an absorbent in thin-film solar cells since it achieved the highest efficiency, which may reach about 20 % [1][2][3]. The search for toxic elements, scarcity, and the need to reduce the cost of mass production are driving chalcogenide-based solar cells as one of the next generations of thin-film solar cells [3].…”

Section: Introductionmentioning

confidence: 99%

Comparative Studies for Determining the Optical Band-gap Energy of the Novel Polycrystalline Thin Znga2s4 Films Sprayed at Different Film Thicknesses

Hassanien

Akl

Radaf

2021

Preprint

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This article has dedicated to studying some structural features and optical characteristics of the Novel polycrystalline ZnGa2S4 (ZGS) thin films utilizing spray pyrolysis process at different thicknesses (293, 375, 452, and 517nm). The microstructural properties and crystal defects of these films have been studied in previous work. While in this work, the crystallinity degree and crystalline volume fraction have been studied using X-ray diffractograms. The stoichiometry of these ZnGa2S4 films has been checked using the energy dispersive x-ray analysis. The field-emission-scanning-electron microscope has been utilized to investigate the morphology of ZGS films' surfaces. Optical properties have been studied via transmittance and reflectance spectra in the range 300nm - 2500nm. Some important optical parameters such as absorption coefficient, skin depth, Urbach's energy, steepness parameters, and electron-phonon interactions have been extensively studied. The direct and indirect gap energy were determined by different four models and compared with Tauc’s model. Optical data analysis revealed that; all studied properties are strongly dependent on the film thickness. The optical band gap values were slightly decreased from 3.7eV to 4.1eV with increment of the film thickness owing to improving the crystallization process. These obtained results confirm that these films are wide band gap semiconductors, which makes them recommended for use in many solar cell applications as a window layer.

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Enhanced spectral response of CIGS solar cells with anti-reflective subwavelength structures and quantum dots

Cited by 25 publications

References 54 publications

Vapor Transport Deposition of Highly Efficient Sb₂(S,Se)₃ Solar Cells via Controllable Orientation Growth

Vapor Transport Deposition of Highly Efficient Sb₂(S,Se)₃ Solar Cells via Controllable Orientation Growth

Photovoltaic efficiency enhancement of polycrystalline silicon solar cells by a highly stable luminescent film

Comparative Studies for Determining the Optical Band-gap Energy of the Novel Polycrystalline Thin Znga2s4 Films Sprayed at Different Film Thicknesses

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Enhanced spectral response of CIGS solar cells with anti-reflective subwavelength structures and quantum dots

Cited by 25 publications

References 54 publications

Vapor Transport Deposition of Highly Efficient Sb2(S,Se)3 Solar Cells via Controllable Orientation Growth

Vapor Transport Deposition of Highly Efficient Sb2(S,Se)3 Solar Cells via Controllable Orientation Growth

Photovoltaic efficiency enhancement of polycrystalline silicon solar cells by a highly stable luminescent film

Comparative Studies for Determining the Optical Band-gap Energy of the Novel Polycrystalline Thin Znga2s4 Films Sprayed at Different Film Thicknesses

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Product

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Vapor Transport Deposition of Highly Efficient Sb₂(S,Se)₃ Solar Cells via Controllable Orientation Growth

Vapor Transport Deposition of Highly Efficient Sb₂(S,Se)₃ Solar Cells via Controllable Orientation Growth