Study of the photon down-conversion effect produced by thin silicon-rich oxide films on silicon solar cells

Vivaldo, Israel; Carrillo, J. L.; López, Osvaldo; Jiménez, Sandra; Martínez, J.; Murias, D.; López, José Alberto Luna

doi:10.1002/er.3622

Cited by 15 publications

(12 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Later, SiN x :Tb 3+ -Yb 3+ , and silicon-rich oxide have also been proposed as DC materials for silicon solar cells. [89,90] Recently, Yao et al reported the Tb 3+ -Yb 3+ co-doped NaYF 4 nanoparticles (NPs) as DC material for silicon solar cells. [91] Figure 4D shows the J-V F I G U R E 3 (A) Air mass (AM) 1.5G spectrum, showing the fraction (highlighted in black) absorbed by a Si-based PV cell.…”

Section: Materials For Inorganic and Dssc Solar Cellsmentioning

confidence: 99%

Down‐conversion materials for organic solar cells: Progress, challenges, and perspectives

et al. 2022

View full text Add to dashboard Cite

Organic solar cells (OSCs) in terms of power conversion efficiency (PCE) and operational lifetime have made remarkable progress during the last decade by improving the active layer materials and introducing new interlayers. The newly developed wide bandgap organic donor and low bandgap acceptor molecules covered the absorption from the visible to the near-infrared region. Whereas the incident high energy region (UV) is not in favor of OSCs. Its absorption causes thermalization losses and photoinduced degradation, which hinders the PCE and lifetime of OSCs. Recently, lanthanide and non-lanthanide-based down-conversion (DC) materials have been introduced, which can effectively convert the high-energy photons (UV) to low-energy photons (visible) and resolve the spectral mismatch losses that limit the absorption of OSCs in high energy incident spectrum. Furthermore, the DC materials also protect the OSCs from UV-induced degradation. The DC materials were also proposed to cross the Shockley-Queisser efficiency limit of the solar cell. In this review, the need for DC materials and their processing method for OSCs have been thoroughly discussed. However, the main emphasis has been given to developing lanthanides and non-lanthanides-based DC materials for OSCs, their applications, and their impact on photovoltaic device performance, stability, and future perspectives.

show abstract

Section: Materials For Inorganic and Dssc Solar Cellsmentioning

confidence: 99%

Down‐conversion materials for organic solar cells: Progress, challenges, and perspectives

et al. 2022

View full text Add to dashboard Cite

show abstract

“…After 180 min of thermal treatment a small intensity appears in the films from blue to red regions, as shown in Figure 2b. The above is due to the long thermal treatment, which is enough for the formation of agglomerations of the small silicon excess, creating the defects and silicon clusters that cause the luminescence as explained in [4]. However, the PL intensity of the SRO45 film is practically negligible in order to be used as a photon converter film in a photodetector.…”

Section: Resultsmentioning

confidence: 99%

High Sensitivity Ultraviolet Light Off-Stoichiometric Silicon Oxide-Based Sensors

Carrillo¹,

López²,

García³

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

Self Cite

View full text Add to dashboard Cite

Abstract:We have developed a UV silicon detector made of silicon and off-stoichiometric silicon dioxide that shows high efficiency and is completely compatible with silicon devices technology. The silicon-based UV detector present a solar cell-like structure which does not require any voltage source. In addition, an off-stoichiometric silicon dioxide film (Silicon Rich Oxide) with silicon nanocrystals has been integrated to this structure. It is shown that the spectral response is due to the high photoluminescence of Si nanocrystals in the visible region when illuminated with UV light and an increase of 100% in the UV detector efficiency is observed with respect to conventional silicon dioxide layers.

show abstract

“…For example, Si-NCs embedded in a dielectric matrix have been proved as a functional active material for light-emitting devices and photodetectors [3,[6][7][8]. Moreover, Si-NCs have been used to increase the efficiency of Si-based solar cells through the photon down-conversion phenomenon [6,9]. Therefore, Si-NCs could allow for the development of Si-based photonic devices [10].…”

Section: Introductionmentioning

confidence: 99%

Study of the Effect of Nitric Acid in Electrochemically Synthesized Silicon Nanocrystals: Tunability of Bright and Uniform Photoluminescence

et al. 2022

View full text Add to dashboard Cite

In this work, we show a correlation between the composition and the microstructural and optical properties of bright and uniform luminescent porous silicon (PSi) films. PSi films were synthesized by electrochemical etching using nitric acid in an electrolyte solution. PSi samples synthesized with nitric acid emit stronger (up to six-fold greater) photoluminescence (PL) as compared to those obtained without it. The PL peak is shifted from 630 to 570 nm by changing the concentration ratio of the HF:HNO3:(EtOH-H2O) electrolyte solution, but also shifts with the excitation energy, indicating quantum confinement effects in the silicon nanocrystals (Si-NCs). X-ray photoelectron spectroscopy analysis shows a uniform silicon content in the PSi samples that emit the strongest PL. High-resolution transmission electron microscopy reveals that the Si-NCs in these PSi samples are about ~2.9 ± 0.76 nm in size and are embedded in a dense and stoichiometric SiO2 matrix, as indicated by the Fourier transform infrared analysis. On the other hand, the PSi films that show PL of low intensity present an abrupt change in the silicon content depth and the formation of non-bridging oxygen hole center defects.

show abstract

Study of the photon down-conversion effect produced by thin silicon-rich oxide films on silicon solar cells

Cited by 15 publications

References 21 publications

Down‐conversion materials for organic solar cells: Progress, challenges, and perspectives

Down‐conversion materials for organic solar cells: Progress, challenges, and perspectives

High Sensitivity Ultraviolet Light Off-Stoichiometric Silicon Oxide-Based Sensors

Study of the Effect of Nitric Acid in Electrochemically Synthesized Silicon Nanocrystals: Tunability of Bright and Uniform Photoluminescence

Contact Info

Product

Resources

About