InGaAs and GaAs quantum dot solar cells grown by droplet epitaxy

Yu, Peng; Wu, Jiang; Gao, Lei; Liu, Huiyun

doi:10.1016/j.solmat.2016.12.024

Cited by 41 publications

(20 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Quantum dot (QD) solar cells have the potential to boost the maximum attainable thermodynamic conversion efficiency of solar photon conversion up to ~66% 2 . However, they are still suffering from poor optical and electrical properties of QDs grown by mainstream Stranski-Krastanov method, because the strain accumulation from the stacking multiple QDs introduces lattice defects which are detrimental to device performance 3 . The nanostructured solar cells such as those based on the close-packed nanowires 4 – 6 are beneficial for the absorption at longer wavelengths, but the device performance is vulnerable to the surface recombination due to the large surface-area-to-volume ratio 7 .…”

Section: Introductionmentioning

confidence: 99%

Effects of Plasmonic Metal Core -Dielectric Shell Nanoparticles on the Broadband Light Absorption Enhancement in Thin Film Solar Cells

Yao

et al. 2017

Sci Rep

Self Cite

128

View full text Add to dashboard Cite

To guide the design of plasmonic solar cells, theoretical investigation of core (metal)-shell (dielectric) nanoparticles for light absorption enhancement in thin film Si solar cells is performed. In contrast to the reported simulations and experimental results that rear-located surface plasmon on bare metallic nanoparticles is preferred, the core-shell nanoparticles demonstrate better performance when surface plasmon is located in front of a solar cell. This has been attributed to the enhanced forward scattering with vanishing backward scattering preserved over a wide spectral range in core-shell nanoparticles. This work provides a concept to achieve enhanced forward scattering with weakened backward scattering in plasmonic thin film solar cells.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of Plasmonic Metal Core -Dielectric Shell Nanoparticles on the Broadband Light Absorption Enhancement in Thin Film Solar Cells

Yao

et al. 2017

Sci Rep

Self Cite

128

View full text Add to dashboard Cite

show abstract

“…Single-crystalline silicon (sc-Si) solar cell has long dominated the solar cell market owing to its high photoelectric conversion efficiency and comprehensive performance [ 1 – 5 ]. However, the advantage of comprehensive quality over other crystalline and noncrystalline silicon solar cell has gradually diminished, due to the rapid development of diamond wire sawing technique, advanced passivation technique, and other type solar cells [ 6 – 13 ]. As reported in practical production, sc-Si solar wafers with upright pyramid structure fabricated in plant production have a mean reflectivity of 10–12%, which almost has reached the limit of one-step alkaline chemical texturing technique [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of 20.19% Efficient Single-Crystalline Silicon Solar Cell with Inverted Pyramid Microstructure

et al. 2018

View full text Add to dashboard Cite

This paper reports inverted pyramid microstructure-based single-crystalline silicon (sc-Si) solar cell with a conversion efficiency up to 20.19% in standard size of 156.75 × 156.75 mm2. The inverted pyramid microstructures were fabricated jointly by metal-assisted chemical etching process (MACE) with ultra-low concentration of silver ions and optimized alkaline anisotropic texturing process. And the inverted pyramid sizes were controlled by changing the parameters in both MACE and alkaline anisotropic texturing. Regarding passivation efficiency, the textured sc-Si with normal reflectivity of 9.2% and inverted pyramid size of 1 μm was used to fabricate solar cells. The best batch of solar cells showed a 0.19% higher of conversion efficiency and a 0.22 mA cm−2 improvement in short-circuit current density, and the excellent photoelectric property surpasses that of the same structure solar cell reported before. This technology shows great potential to be an alternative for large-scale production of high efficient sc-Si solar cells in the future.Electronic supplementary materialThe online version of this article (10.1186/s11671-018-2502-9) contains supplementary material, which is available to authorized users.

show abstract

“…On the other hand, nanostructures such as quantum dots (QDs) have been obtained remarkable progress in modern nano-science and nano-technology in recent years 14 . QD, consiered as a simple stationary “artificial atom” with well optical property 15 , lays the foundation for numerous potential applications 16 , where the significant applications including entanglement concentration, logic gate construction and entangled state preparation with optical Kerr nonlinear effect have drawn widespread attention 14 , 17 , 18 . The optical Kerr nonlinear effect manifested by the third-order optical Kerr nonlinearity of QD, which is essential for light-controlled phase and refractive index modulation in various fields such as optical telecommunications, optical data storage, and information processing 14 , 19 .…”

Section: Introductionmentioning

confidence: 99%

Rabi splitting and optical Kerr nonlinearity of quantum dot mediated by Majorana fermions

Chen

2018

Sci Rep

View full text Add to dashboard Cite

Majorana fermions (MFs), due to their significance in fundamental physics and potential applications in topological quantum computation based on solid-state devices, have drawn widespread attention. Here, we design a hybrid semiconductor/superconductor ring (S/SR) device and put forward an optical method for detecting a pair of MFs in the S/SR device with a quantum dot (QD) with the popular optical pump-probe scheme, which is very different from the present electrical method only considering one nearby MF coupled to the QD. The symmetric and unsymmetric Rabi splitting and optical Kerr nonlinear effect of QD mediated by MFs are investigated under uncoupled and coupled majorana modes, respectively. The coherent optical spectra indicate that a pair of MFs coupled to the QD induced remarkable splitting under different parameters regime and the physical origin of these phenomena are elaborated detailedly. Due to QD-MFs coupling, the probe absorption spectra present the phenomenon of Majorana modes induced transparency (MMIT) which will induce remarkable phenomena of slow light. The coherent optical spectra afford a potential supplement for probing MFs and support Majorana fermions-based topological quantum computation.

show abstract

InGaAs and GaAs quantum dot solar cells grown by droplet epitaxy

Cited by 41 publications

References 30 publications

Effects of Plasmonic Metal Core -Dielectric Shell Nanoparticles on the Broadband Light Absorption Enhancement in Thin Film Solar Cells

Effects of Plasmonic Metal Core -Dielectric Shell Nanoparticles on the Broadband Light Absorption Enhancement in Thin Film Solar Cells

Fabrication of 20.19% Efficient Single-Crystalline Silicon Solar Cell with Inverted Pyramid Microstructure

Rabi splitting and optical Kerr nonlinearity of quantum dot mediated by Majorana fermions

Contact Info

Product

Resources

About