Theoretical Model for Observation of the Conversion Efficiency into Quantum Dot Solar Cells

Nasr, A.

doi:10.1061/(asce)ey.1943-7897.0000262

Cited by 8 publications

(6 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When one held comparison between our obtained results and others in the fully and unconcentrated cases: max = 70.4% Figure 13: Power conversion efficiency for QDIBSC at full concentration (solid) and unconcentrated (dash) cases at specified values of quantum dot and barrier widths that give maximum efficiency. rather than 63.2% [11,14,26,27], and max = 57.5% rather than of 46.8%, respectively, [14]. The numerical results in Table 2 can be utilized also for experimental achievements.…”

Section: Parametersmentioning

confidence: 99%

Theoretical Study of One-Intermediate Band Quantum Dot Solar Cell

Aly¹,

Nasr²

2014

International Journal of Photoenergy

View full text Add to dashboard Cite

The intermediate bands (IBs) between the valence and conduction bands play an important role in solar cells. Because the smaller energy photons than the bandgap energy can be used to promote charge carriers transfer to the conduction band and thereby the total output current increases while maintaining a large open circuit voltage. In this paper, the influence of the new band on the power conversion efficiency for the structure of the quantum dots intermediate band solar cell (QDIBSC) is theoretically investigated and studied. The time-independent Schrödinger equation is used to determine the optimum width and location of the intermediate band. Accordingly, achievement of maximum efficiency by changing the width of quantum dots and barrier distances is studied. Theoretical determination of the power conversion efficiency under the two different ranges of QD width is presented. From the obtained results, the maximum power conversion efficiency is about 70.42% for simple cubic quantum dot crystal under full concentration light. It is strongly dependent on the width of quantum dots and barrier distances.

show abstract

Section: Parametersmentioning

confidence: 99%

Theoretical Study of One-Intermediate Band Quantum Dot Solar Cell

Aly¹,

Nasr²

2014

International Journal of Photoenergy

View full text Add to dashboard Cite

show abstract

“…When using QDs from small bandgap energy semiconductor inside the host semiconductor material, the efficiency of QDIBSC is increased by reducing the thermalisation losses and making the QDIBSC absorbs a larger part of the incident radiation. [21][22][23] Some parameters, such as the width size and the distance among QDs in the barrier material, affect the behavior of this device. In this paper, the geometry of QDs is assumed as cubic.…”

Section: -3mentioning

confidence: 99%

Progress into power conversion efficiency for solar cells based on nanostructured and realistic spectra

Aly

2014

Journal of Renewable and Sustainable Energy

View full text Add to dashboard Cite

To make the solar cell technology more competitive as a source of alternative energy, the study of how to improve its efficiency is essential. The detailed balance efficiency of traditional and one-intermediate band solar cell (one-IBSC) is analyzed by using realistic spectra at AM0 and AM1.5 under various light concentrations. Theoretically, the optimum location for one-IB is investigated to determine the maximum efficiency of one-IBSC. The quantum dot (QD) intermediate band solar cell is studied with the effect of some parameters for QD such as width size (QDW) and barrier thickness (BT) to determine the optimum location of one-IB. The main results conclude that the one-IBSC under AM0 spectrum has maximum balanced efficiencies reached to 45.70% and 63.56% for 1 Sun and maximum light concentration, respectively. While for AM1.5 spectrum these efficiencies are 49.35% and 67.60% with the same conditions of AM0 spectrum. The results also show that the maximum balanced efficiencies for one-IBSC nearly achieved when they are processed by QDs which have the main parameters, QDW and BT. V C 2014 AIP Publishing LLC. [http://dx.

show abstract

“…Nanocrystalline semiconductors demonstrate salient optical properties and excellent chemical processability, and these properties make them good candidates for applications in various fields, such as light emitting diode (LED) displays, biological labels, and solar cells . The key factors that govern the use of luminescent nanohybrids in the biological and LED fields include their high luminescence quantum yields (QYs), stable luminescent properties under real‐field operation conditions, and good solubility in desired solvents.…”

Section: Microfluidic Synthesis Of Nanohybridsmentioning

confidence: 99%

Microfluidic Synthesis of Nanohybrids

Wang

Song

2017

Small

View full text Add to dashboard Cite

Nanohybrids composed of two or more components exhibit many distinct physicochemical properties and hold great promise for applications in optics, electronics, magnetics, new energy, environment protection, and biomedical engineering. Microfluidic systems exhibit many advantages due to their unique characteristics of narrow channels, variable length, controllable number of channels and multiple integrations. Particularly their spatial-temporarily splitting of the formation stages during nanomaterials formation along the microfluidic channels favors the online control of the reaction kinetic parameters and in situ tuning of the product properties. This Review is focused on the features of the current types of microfluidic devices in the synthesis of different types of nanohybrids based on the classification of the four main kinds of materials: metal, nonmetal inorganic, polymer and composites. Their morphologies, compositions and properties can be adjusted conveniently in these synthesis systems. Synthesis advantages of varieties of microfluidic devices for specific nanohybrids of defined surfaces and interfaces are presented according to their process and microstructure features of devices as compared with conventional methods. A summary is presented, and challenges are put forward for the future development of the microfluidic synthesis of nanohybrids for advanced applications.

show abstract

Theoretical Model for Observation of the Conversion Efficiency into Quantum Dot Solar Cells

Cited by 8 publications

References 32 publications

Theoretical Study of One-Intermediate Band Quantum Dot Solar Cell

Theoretical Study of One-Intermediate Band Quantum Dot Solar Cell

Progress into power conversion efficiency for solar cells based on nanostructured and realistic spectra

Microfluidic Synthesis of Nanohybrids

Contact Info

Product

Resources

About