Synthesis, characterization and photovoltaic properties of Cd1−xZnxS and Mn: Cd1−xZnxS quantum dots

Horoz, Sabit; Ekinci, Arzu; Şahi̇n, Ömer

doi:10.1007/s10854-018-8555-9

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…Among the various technologies developed to harness solar power, quantum dot sensitized solar cells (QDSSCs) have garnered significant attention. These devices offer a promising avenue for solar energy conversion, combining the advantages of high quantum efficiency, tunable bandgap energies, and the potential for low-cost production [2,3]. Quantum dots (QDs), with their unique size-dependent optical and electrical properties, enable the absorption of a broader spectrum of sunlight compared to traditional photovoltaic materials, suggesting an avenue to surpass the Shockley-Queisser limit for solar cell efficiency [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The Role of PbCoS Quantum Dots in Improved Photovoltaic Efficiency

2024

Global NEST: The International Journal

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<p>The quest for efficient, sustainable solar energy solutions has propelled the exploration of novel materials with enhanced photovoltaic properties. This study delves into the synthesis, characterization, and photovoltaic application of cobalt-doped lead sulfide (PbCoS) quantum dots (QDs) deposited on titanium dioxide (TiO2) substrates. Employing a hot-injection method, we synthesized PbCoS QDs and characterized their structural, compositional, and optical properties using X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), and UV-Visible absorption spectroscopy. The QDs demonstrated a cubic crystal structure with an average size of 20.12 nm and exhibited a direct band gap of 1.91 eV, indicative of quantum confinement effects and improved absorption in the visible spectrum. The photovoltaic performance of quantum dot-sensitized solar cells (QDSSCs) incorporating PbCoS QDs was assessed through current density-voltage (J-V) measurements, revealing a power conversion efficiency (PCE) of 2.17%. This efficiency highlights the potential of PbCoS QDs to enhance the performance of QDSSCs, partly attributed to the impact of cobalt doping on the electronic structure and photovoltaic properties of the material. The study identifies gaps in current research, such as the optimization of cobalt doping levels and the exploration of interface engineering between QDs and substrates, pointing towards future directions for enhancing the efficiency and applicability of PbCoS-based photovoltaic devices.</p>

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Section: Introductionmentioning

confidence: 99%

The Role of PbCoS Quantum Dots in Improved Photovoltaic Efficiency

2024

Global NEST: The International Journal

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Influence of stabilizers on the structure and properties of Cd _x Zn _1– _x S nanoparticles by sonochemical method

Gahramanli

Muradov

Kukovecz

et al. 2020

Inorganic and Nano-Metal Chemistry

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Numerical simulation analysis of effect of energy band alignment and functional layer thickness on the performance for perovskite solar cells with Cd_1-xZn_xS electron transport layer

Zou

Cheng

et al. 2020

Mater. Res. Express

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Energy band alignment between perovskite layer and charge transport layers is critical to the perovskite solar cell efficiency. The thickness of functional layers also has a great influence on the device performance. We have optimized the energy band alignment at the interface between electron transport layer (ETL) and perovskite layer by using appropriate Cd1-xZnxS ETL (x represents the Zn molar concentration). Different hole transport layers (HTLs) have also been selected to address the mismatching energy band alignment at perovskite/HTL interface. Additionally, the thickness of Cd1-xZnxS ETL and perovskite layer (MAPbI3) has been optimized. We performed all the analysis via numerical simulation with wx Analysis of Microelectronic and Photonic Structures (wxAMPS) software. We also compared the results obtained in this study, with results reported in other literature to ascertain the validity of the results. The results show that the device performance could be improved by appropriately increasing the molar concentration of Zn in Cd1-xZnxS. Spike-type energy band structure at the interface of MAPbI3/HTL could favor the performance of perovskite solar cells when MASnBr3 is adopted as HTL. Appropriate ETL and perovskite layer thickness would increase the short circuit current and reduce the recombination loss.

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Synthesis, characterization and photovoltaic properties of Cd1−xZnxS and Mn: Cd1−xZnxS quantum dots

Cited by 3 publications

References 16 publications

The Role of PbCoS Quantum Dots in Improved Photovoltaic Efficiency

The Role of PbCoS Quantum Dots in Improved Photovoltaic Efficiency

Influence of stabilizers on the structure and properties of Cd _x Zn _1– _x S nanoparticles by sonochemical method

Numerical simulation analysis of effect of energy band alignment and functional layer thickness on the performance for perovskite solar cells with Cd_1-xZn_xS electron transport layer

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Synthesis, characterization and photovoltaic properties of Cd1−xZnxS and Mn: Cd1−xZnxS quantum dots

Cited by 3 publications

References 16 publications

The Role of PbCoS Quantum Dots in Improved Photovoltaic Efficiency

The Role of PbCoS Quantum Dots in Improved Photovoltaic Efficiency

Influence of stabilizers on the structure and properties of Cd x Zn 1– x S nanoparticles by sonochemical method

Numerical simulation analysis of effect of energy band alignment and functional layer thickness on the performance for perovskite solar cells with Cd1-xZnxS electron transport layer

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About

Influence of stabilizers on the structure and properties of Cd _x Zn _1– _x S nanoparticles by sonochemical method

Numerical simulation analysis of effect of energy band alignment and functional layer thickness on the performance for perovskite solar cells with Cd_1-xZn_xS electron transport layer