Surface modifications of CIGS absorbers and their effects on performances of CIGS solar cells

Wang, Chen; Zhuang, Daming; Zhao, Ming; Li, Yuxian; Dong, Liangzheng; Wang, Hanpeng; Wei, Jinquan; Gong, Qianming

doi:10.1016/j.ceramint.2021.08.365

Cited by 10 publications

(3 citation statements)

References 22 publications

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“…Mudryi et al [16] have related this phenomenon to a decrease in the absorber surface roughness. In this work, the enhancement of T can be due to the decrease of the CIGS grain size as the Ga ratio increase, which can affect the surface properties of the absorber and consequently, the refracted light behavior [16,17].…”

Section: Fig 3 -Sem Micrograph Of a Cuin072ga028se2 Thin Film Deposit...mentioning

confidence: 93%

Optical Properties Evaluation of CuIn1-xGaxSe2 Thin Films Using OPAL2 Calculator

Kouhlane

Bouhafs

Nwadiaru

et al. 2022

JSMPM

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OPAL2 calculator has proved to be an effective technique for simulating optical losses in various materials for various applications. This study demonstrates the use of this softwareto simulate the transmittance (T) and reflectance (R) and hence evaluate the optical properties of flash evaporated CuIn1-xGaxSe2(CIGS) thin films with a ratio x = 0.28 deposited on stainless-steel (STS) and glass substrates. The simulation results exhibit excellent accuracy of the modeled design presented in this work. The CIGS with a ratio of gallium x = 0.3 showed the best matching between simulated and experimental T and R patterns. Moreover, the simulation shows that an increase in the gallium concentration increases optical losses. Finally, the results demonstrate the application of the freeware program OPAL2 to practically simulate the optical proprieties of CIGS thin films.

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Section: Fig 3 -Sem Micrograph Of a Cuin072ga028se2 Thin Film Deposit...mentioning

confidence: 93%

Optical Properties Evaluation of CuIn1-xGaxSe2 Thin Films Using OPAL2 Calculator

Kouhlane

Bouhafs

Nwadiaru

et al. 2022

JSMPM

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“…Theoretical studies propose that the substitution of Ga 3þ with transition metals like Cr introduces a partially filled absorption band within the CGST chalcopyrite structures. [4,50] This phenomenon facilitates the excitation of electrons from the VB to the CB through a twophoton absorption process. The concept of a sub-bandgap has garnered significant attention in the field of solar cell research.…”

Section: Optical Properties Analysismentioning

confidence: 99%

Development of Sub‐Band in Spray‐Deposited Cr‐Substituted Chalcopyrite Thin Films for Advancing Solar Cell Efficiency

Vijayan,

Thirumalaisamy,

Vijayachamundeeswari

et al. 2024

Energy Tech

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Designing effective strategies for mitigating energy crisis highlights a research gap in current solar cell technologies. This study explores the inherent physicochemical properties of thin films composed of copper gallium sulfide telluride (CuGa1−xCrx(S,Te)2) with chromium substitution, prepared through the chemical spray pyrolysis technique. The investigation showcases how the concept of intermediate band structuring contributes to enhancing solar cell efficiency. This enhancement can be attributed to the remarkable mobility (from 1.80 to 5.48 cm2 V−1 s−1) and conductivity (from 1.00 to 6.06 S cm−1) exhibited by pure and 0.1 chromium thin films, respectively. Notably, the Cr‐0.1‐substituted CGST film displays maximum photoresponsivity of 0.624 AW−1, an external quantum efficiency of 145%, and a detectivity of 2.37E10. The fabricated solar cell is subjected to theoretical simulation using solar cell capacitance simulator‐1D software, revealing an upward trend in efficiency from 7.13% to 11.23% with increasing Cr substitution from 0.025 to 0.1. This efficiency improvement can be ascribed to the reduction in bandgap (from 2.40 to 1.72 eV) and the creation of a sub‐band in CGST due to Cr incorporation, as substantiated by UV–vis and NIR spectroscopy. These outcomes suggest that Cr‐0.1‐substituted CGST holds promise as a potential thin film absorber material in solar photovoltaics.

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“…8 Chalcogenide solar cells have been considered excellent materials for building-integrated photovoltaics and tandem solar cells due to their desirable characteristics, such as charge carrier mobility, tuneable bandgap, adjustable efficiency, low processing temperature, and cost-effective fabrication. 9 Notably, conventional chalcogenide-based absorbers, such as Cu(In,Ga)(S,Se) 2 , CIGSSe, and CdTe, have achieved impressive power conversion efficiencies of 23.6% and 22.1%, respectively. 10 However, issues regarding the toxicity of sulfur (S), selenium (Se), and cadmium (Cd) have prompted increased interest in earth-abundant and low-toxicity photovoltaic semiconductors.…”

Section: Introductionmentioning

confidence: 99%

Hierarchically structured sub-bands in chalcopyrite thin-film solar cell devices

Vijayan,

Thirumalaisamy,

Vijayachamundeeswari

et al. 2023

New J. Chem.

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Surface modifications of CIGS absorbers and their effects on performances of CIGS solar cells

Cited by 10 publications

References 22 publications

Optical Properties Evaluation of CuIn1-xGaxSe2 Thin Films Using OPAL2 Calculator

Optical Properties Evaluation of CuIn1-xGaxSe2 Thin Films Using OPAL2 Calculator

Development of Sub‐Band in Spray‐Deposited Cr‐Substituted Chalcopyrite Thin Films for Advancing Solar Cell Efficiency

Hierarchically structured sub-bands in chalcopyrite thin-film solar cell devices

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