Physical insights into the effects of quantum dots size and temperature on efficiency of InAs/GaAs quantum dots intermediate band solar cell

Amine, A.; Wakif, Abderrahim; Kinani, M.A.; Mir, Y.; Oukerroum, A.; Zazoui, M.

doi:10.1016/j.physa.2019.123786

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…These effects are impossible in the case of device modeling, showing the greater theoretical conversion efficiency [133]. In addition to this, the programmable software MATLAB has also been explored to study the quantum dots' performance in solar cells, where the effect of temperature and size of these quantum-confined nanostructures on the efficiency of the solar cell has been reported [134]. The simulation and designing of quantum dots can be expanded to the field of quantum computing by modeling the quantum dots' qubits.…”

Section: Design Tools For Quantum Dotsmentioning

confidence: 99%

Recent progress and opportunities in 2D-material quantum dots: synthesis, doping, characterization, and applications

Sahu,

Tripathi

2024

Phys. Scr.

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The quantum dots derived from the 2D material are finding their applications in sustainable and emerging technologies due to their tuneable properties by quantum confinement and scalable synthesis. Elemental doping in these quantum dots can enhance the performance favourably for the desired application. It can further tune the properties of parent counterparts leading to novel and interesting properties and applications. This review demonstrates the excellence of 2D materials-based quantum dots as a material platform. We critically analysed and present a critical account of the top-down and bottom-up synthesis of 2D material-derived quantum dots. Further, the doping of quantum dots and prominent characterization techniques to identify the successful incorporation of dopants in them are presented. In the end, we critically analysed the applications of these two-dimensional derived quantum dots in energy, optoelectronic, and quantum technological applications.

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Section: Design Tools For Quantum Dotsmentioning

confidence: 99%

Recent progress and opportunities in 2D-material quantum dots: synthesis, doping, characterization, and applications

Sahu,

Tripathi

2024

Phys. Scr.

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“…As is shown in Fig. 3 , the small QDs allow few excited states inside the CB offset, which is conducive to the splitting of QFLs between the IB and the CB, as well as a better position of the IB, so the thermal excitation energy increases and the voltage is preserved [ 36 , 47 , 48 ]. Also, the reduction of the QD width means that a higher QD density can be obtained, resulting in an increase in photocurrent [ 49 ].…”

Section: Research Progress Of In(ga)as/gaas Qd-ibscmentioning

confidence: 99%

Performance optimization of In(Ga)As quantum dot intermediate band solar cells

et al. 2023

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Quantum dot intermediate band solar cell (QD-IBSC) has high efficiency theoretically. It can absorb photons with energy lower than the bandgap of the semiconductor through the half-filled intermediate band, extending the absorption spectrum of the cell. However, issues in the IBSC, such as the strain around multi-stacking QDs, low thermal excitation energy, and short carrier lifetime, lead to its low conversion efficiency. In recent years, many efforts have been made from different aspects. In this paper, we focus on In(Ga)As QD-IBSC, list the experimental technologies used to improve the performance of the cell and review the recent research progress. By analyzing the effects of different technologies on conversion efficiency, the development direction of the In(Ga)As QD-IBSC in the future is proposed.

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“…The incorporation of QDs into the active layer of these cells offers the possibility of broadening the spectrum of absorbed photons with energies lower than the bandgap. This, in turn, increases the likelihood of absorption, subsequently enhancing cell efficiency by modifying the bandgap [4]. Several studies have suggested using QDs and nanowires within the intermediate band, with InAs/GaAs (QD-IBSC) among the notable examples [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigation and Improvement of Characteristics of InAs/GaAs Quantum Dot Intermediate Band Solar Cells by Optimizing Quantum Dot Dimensions

Farhadipour,

Olyaee,

Kosarian

2024

Symmetry

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Quantum dot (QD)-based solar cells have been the focus of extensive research. One of the critical challenges in this field is optimizing the size and placement of QDs within the cells to enhance light absorption and overall efficiency. This paper theoretically investigates InAs/GaAs QD intermediate band solar cells (QD-IBSC) employing cylindrical QDs. The goal is to explore factors affecting light absorption and efficiency in QD-IBSC, such as the positioning of QDs, their dimensions, and the spacing (pitch) between the centers of adjacent dots. Achieving optimal values to enhance cell efficiency involves modifying and optimizing these QD parameters. This study involves an analysis of more than 500 frequency points to optimize parameters and evaluate efficiency under three distinct conditions: output power optimization, short-circuit current optimization, and generation rate optimization. The results indicate that optimizing the short-circuit current leads to the highest efficiency compared to the other conditions. Under optimized conditions, the efficiency and current density increase to 34.3% and 38.42 mA/cm², respectively, representing a remarkable improvement of 15% and 22% compared to the reference cell.

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Physical insights into the effects of quantum dots size and temperature on efficiency of InAs/GaAs quantum dots intermediate band solar cell

Cited by 4 publications

References 23 publications

Recent progress and opportunities in 2D-material quantum dots: synthesis, doping, characterization, and applications

Recent progress and opportunities in 2D-material quantum dots: synthesis, doping, characterization, and applications

Performance optimization of In(Ga)As quantum dot intermediate band solar cells

Theoretical Investigation and Improvement of Characteristics of InAs/GaAs Quantum Dot Intermediate Band Solar Cells by Optimizing Quantum Dot Dimensions

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