Silicon nanowire-array-textured solar cells for photovoltaic application

Chen, Chen; Jia, Rui; Yue, Huihui; Li, Haofeng; Liu, Xinyu; Wu, Dehai; Ding, Wei; Ye, Tianchun; Kasai, Seiya; Hashizume, Tamotsu; Chu, Junhao; Wang, Shan‐Li

doi:10.1063/1.3493733

Cited by 58 publications

(41 citation statements)

References 16 publications

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“…The enhanced PL extraction from the nanosurface indicates that the Si nanopores increase the surface area and the corresponding nanosurface recombination. However, the nanosurface-related dangling bonds decrease the internal QE and short circuit current [23]. Furthermore, the absorption of short-wavelength photons due to the nanoporous Si surface causes poor blue response due to the high surface recombination [24,25].…”

Section: Resultsmentioning

confidence: 99%

Nanopyramid Formation by Ag Metal-Assisted Chemical Etching for Nanotextured Si Solar Cells

Parida¹,

Choi²,

Palei³

et al. 2015

Transactions on Electrical and Electronic Materials

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We investigated the formation of a nanopyramidal structure and fabricated nanotextured Si solar cells using an Ag metal-assisted chemical etching process. The nanopyramidal structure was formed on a Si flat surface and the nanotexturing process was performed on the p-type microtextured Si surface. The nanostructural formation shows a transition from nanopits and nanopores to nanowires with etching time. The nanotextured surfaces also showed the photoluminescence spectra with an enhanced intensity in the wavelength range of 1,100~1,250 nm. The photoreflectance of the nanotextured Si solar cells was strongly reduced in the wavelength range of 337~596 nm. However, the quantum efficiency is decreased in the nanotextured samples due to the increased nanosurface recombination. The nanotexturing process provides a better p-n junction impedance of the nanotextured cells, resulting in an enhanced shunt resistance and fill factor which in turn renders the possibility of the increased conversion efficiency.

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Section: Resultsmentioning

confidence: 99%

Nanopyramid Formation by Ag Metal-Assisted Chemical Etching for Nanotextured Si Solar Cells

Parida¹,

Choi²,

Palei³

et al. 2015

Transactions on Electrical and Electronic Materials

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“…The one-step nanotextured cell the one-step nanotextured cell has low PR in the short wavelength region compared to the two-step nanotextured cells, indicating the necessity of nanostructures with large surface area. However, there are many possibilities of surface recombination by the dangling bonds of the nanostructures with large surface area that reduce the short-circuit current [28]. Figure 11 shows the quantum efficiency of the Ref.…”

Section: Resultsmentioning

confidence: 99%

Nanotextured Si Solar Cells on Microtextured Pyramidal Surfaces by Silver-assisted Chemical Etching Process

Parida¹,

Choi²,

Palei³

et al. 2015

Transactions on Electrical and Electronic Materials

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We investigated nanotextured Si solar cells using the silver-assisted chemical etching process. The nanotexturing process is very sensitive to the concentration of chemical etching solution. The high concentration process results in a nanowire formation for the nanosurfaces and causes severe surface damage to the top region of the micropyramids. These nanowires show excellent light absorption in photoreflectance spectra and radiative light emission in photoluminescence spectra. However, the low concentration process forms a nano-roughened surface and provides high minority carrier lifetimes. The nano-roughened surfaces of the samples show the improved electrical cell properties of quantum efficiency, conversion efficiency, and cell fill factor due to the reduction in the formation of the over-doped dead layer.

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“…Using MAE, we have recently conducted an extensive parametric study and explored the effect of various reaction parameters on the length and antireflective performance of the silicon nanowires [10]. Silicon nanowire arrays with excellent antireflective performance have been utilized in a homojunction silicon solar cell [11]. Radial heterojunction concept, that involves deposition of a complementary organic or inorganic thin film onto silicon nanowires arrays have also been demonstrated [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Silicon nanowires stand out to be one of the most important candidates for light trapping applications in solar cells. Effective use of silicon nanowires in electronic systems such as solar cells [1,2], thermoelectric [3], light emitting diodes [4], biological/chemical sensors [5], photodetectors [6] and lithium ion batteries [7] have already been demonstrated in prototype devices. Many of these devices utilized vapor-liquidsolid (VLS) method grown silicon nanowires since VLS facilitates a full control over the resultant nanowire structure.…”

Section: Introductionmentioning

confidence: 99%