Effect of post-treatment processes on the photoluminescence of porous silicon

Zhao, Yue; Li, Dongsheng; Yang, Deren

doi:10.1016/j.physb.2005.04.010

Cited by 13 publications

(5 citation statements)

References 22 publications

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“…Furthermore, it was shown that the properties of PS were strongly influenced by the PS surface states, the kind and density of absorbed atoms and the thin oxide layer, as reported in Ref. [34]. When a physical absorption occurs on the surface of the PS, these molecules have the ability to penetrate the pores and should result in serious transformation of the surface states of the PS and then change the emission properties of the PS sample.…”

Section: Article In Pressmentioning

confidence: 84%

Long-time stabilization of porous silicon photoluminescence by surface modification

Mahmoudi¹,

Gabouze²,

Guerbous

et al. 2007

Journal of Luminescence

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Section: Article In Pressmentioning

confidence: 84%

Long-time stabilization of porous silicon photoluminescence by surface modification

Mahmoudi¹,

Gabouze²,

Guerbous

et al. 2007

Journal of Luminescence

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“…The most used porous silicon layers, 'PSL' formation method has been the electrochemical method [8,9]. However, the implementation of this technique in a production line of solar cells is quite difficult.…”

Section: Introductionmentioning

confidence: 99%

Contribution of the photoluminescence effect of the stain etched porous silicon in improvement of screen printed silicon solar cell performance

Chaoui,

Mahmoudi,

Si Ahmed

et al. 2023

J. Ren. Energies

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In this work, we investigate the potential use of porous silicon (PS) nanostructures stain etched into photovoltaic technology as one possible way to increase the silicon solar cell (SC) efficiency at low cost. The process is based on a combination of texturization and porous silicon formed by metal assisted etching which used the screen printed front grid contact. The photoluminescence (PL), the reflectivity spectra of the PS layers, spectral response and electrical measurements are presented and discussed. As a result, the short circuit current density was improved by more than 21%. We observed an increase in internal quantum efficiency (iQE) in the region where the PL of the PS layers appears and the minority carriers’ diffusion length is enhanced by more than 60 . We report the correlation between the converter PL intensity and iQE and we demonstrate that the photoluminescence properties and the increased photocurrent result in an improvement of the solar cell efficiency.

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“…The origin of PS luminescence had been extensively studied, but the luminescent mechanism was not yet solved in the past years. It was believed that photoluminescence (PL) occurred at or near PS surface, but the efficiency and the wavelength range of PS emission was strongly affected by the physical and the electronic properties of PS surface [2]. Therefore, it was necessary to study the influence of the surface-absorption groups on PS emission.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Surfaces Characteristics on the Luminescent Property of Porous Silicon

Ding

Zhao

Feng

et al. 2014

AMR

Self Cite

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Photoluminescence of porous silicon (PS) prepared by different etched time was studied. The photoluminescence might originate from the recombination of carriers and surface states, which was proved by FTIR, Raman spectroscopy and SEM. Furthermore, the hydrogen-related groups on the PS surface could eliminate the surface states for the blue emission, but the quantities of surface states for the green emission were depended on the uncovered area on the PS surface. Moreover, the shape of photoconductivity curve was depended on the quantities of the surface states, which also was related to the uncovered area on the PS surface. In addition, the results of the microwave-detected photoconductivity decay measurement indicated thatthe defects on the PS surface increased with the increase of the etched time, which would be related to the increase of the depth of pores.

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Effect of post-treatment processes on the photoluminescence of porous silicon

Cited by 13 publications

References 22 publications

Long-time stabilization of porous silicon photoluminescence by surface modification

Long-time stabilization of porous silicon photoluminescence by surface modification

Contribution of the photoluminescence effect of the stain etched porous silicon in improvement of screen printed silicon solar cell performance

Influence of the Surfaces Characteristics on the Luminescent Property of Porous Silicon

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