Metastable effects in silicon thin films: Atmospheric adsorption and light-induced degradation

Smirnov, V. A.; Reynolds, S.; Finger, F.; Carius, R.; Main, C.

doi:10.1016/j.jnoncrysol.2005.12.014

Cited by 26 publications

(34 citation statements)

References 17 publications

(25 reference statements)

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“…However, mixed aging effect (either Type I or Type II) can occur in 150 nm thin films deposited on the same type substrates as found here. It was previously reported [7] that thinner films, deposited on smooth substrates, are more sensitive to the aging process. Figure 2 indicates that when rough substrates are used, thicker samples show higher changes in the dark conductivity σ Dark .…”

Section: Results and Discussion 31 Dark And Photoconductivitymentioning

confidence: 93%

“…While highly crystalline material is stable against light-induced degradation (StaeblerWronski effect, SWE), the material containing a significant amorphous fraction may suffer from the SWE [2]. Additionally, the electronic properties of amorphous and microcrystalline silicon films [2][3][4][5][6][7] and solar cells [8] are known to be sensitive to the effects of ambient atmosphere (referred to as aging). Both reversible and irreversible effects may occur [2,4].…”

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confidence: 99%

“…Both reversible and irreversible effects may occur [2,4]. Reversibly adsorbed atmospheric components may be removed, for example, by thermal annealing at temperatures between 100 °C and 160 °C [4][5][6][7]. Depending on microstructure, films can show a conductivity decrease after storage in ambient air (Type I), usually samples with high crystalline volume fraction.…”

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confidence: 99%

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Instability effects in hydrogenated microcrystalline silicon thin films

Yilmaz

Turan

Güneş

et al. 2010

Phys. Status Solidi (c)

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Instability effects on the dark conductivity (σDark) and photoconductivity (σphoto) of microcrystalline silicon films with different microstructures deposited on smooth and rough substrates, after exposure to different storage conditions have been investigated. Samples stored in vacuum are less affected by aging than films stored in air and sealed plastic bags filled with N2 gas. The aging is reversible after annealing at 450 K. Thin films deposited on smooth and rough substrates with the same thickness and silane concentrations (SC) during the same deposition run showed similar aging effects. Thick samples exhibited a decrease in σDark, while both decrease and increase in σDark occur in thin samples after aging. For each sample, σDark and σphoto presented the same type of aging, independent of thickness and type of substrate used. The applicability of the steady‐state photocarrier grating technique was successfully tested on the rough substrates. Light‐induced degradation studies confirm the dependence of the Staebler‐Wronski effect on the crystallinity of the material (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Results and Discussion 31 Dark And Photoconductivitymentioning

confidence: 93%

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confidence: 99%

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confidence: 99%

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Instability effects in hydrogenated microcrystalline silicon thin films

Yilmaz

Turan

Güneş

et al. 2010

Phys. Status Solidi (c)

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“…Annealing was carried out under vacuum at 160°C for 10 min. To achieve aged condition [9], the annealed samples were left in ambient air in dark for a period of 3-5 days. During this time, dark conductivity increased for both films.…”

Section: Resultsmentioning

confidence: 99%

“…The effects of ambient atmosphere (referred to as ageing) on the electronic properties of amorphous and microcrystalline silicon films have been the subject of recent studies [6][7][8][9]. Both reversible and irreversible effects may occur [6,7].…”

Section: Introductionmentioning

confidence: 99%