High mobility hydrogenated and oxygenated microcrystalline silicon as a photosensitive material in photovoltaic applications

Faraji, M.; Gokhale, Sunil; Choudhari, Sushama; Takwale, M.G.; Ghaisas, S. V.

doi:10.1063/1.106722

Cited by 36 publications

(18 citation statements)

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“…After annealing in O 2 at 1601C the CE signal does not appear, but instead a strong increase of a resonance at g42.0052 is observed. The different behaviour upon annealing in O 2 and Ar indicate that the observed changes in the ESR signals are not due to a mere thermal annealing effect, but rather to oxidation or adsorption and desorption at the surface.…”

Section: Adsorptionmentioning

confidence: 99%

“…The recent popularity of microcrystalline silicon (mc-Si:H) began with the first successful applications of this material as an absorber layer in thin film solar cells [1][2][3] and, most importantly, when it was reported [3] that such solar cells did not suffer from the notorious light-induced degradation, known as the Staebler-Wronski effect (SWE), which is observed in amorphous silicon [4]. Easy fabrication of mc-Si:H, i.e.…”

Section: Introductionmentioning

confidence: 99%

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Stability of microcrystalline silicon for thin film solar cell applications

Finger¹,

Carius²,

Dylla³

et al. 2003

IEE Proc., Circuits Devices Syst.

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The development of microcrystalline silicon (mc-Si:H) for solar cells has made good progress with efficiencies better than those of amorphous silicon (a-Si:H) devices. Of particular interest is the absence of light-induced degradation in highly crystalline mc-Si:H. However, the highest efficiencies are obtained with material which may still include a-Si:H regions and lightinduced changes may be expected in such material. On the other hand, material of high crystallinity is susceptible to in-diffusion of atmospheric gases which, through adsorption or oxidation, affect the electronic transport. Investigations are presented of such effects concerning the stability of mcSi:H films and solar cells prepared by plasma-enhanced chemical vapour deposition and hot wire chemical vapour deposition.

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Section: Adsorptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stability of microcrystalline silicon for thin film solar cell applications

Finger¹,

Carius²,

Dylla³

et al. 2003

IEE Proc., Circuits Devices Syst.

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show abstract

“…Preliminary work was done by Lucovsky et al [4], and Faraji et al [5]. Subsequently, our group successfully pioneered [6][7][8] entirely microcrystalline pin-and nip-type silicon solar cells fabricated with the very high frequency (VHF) glow discharge method, thereby rapidly attaining AM 1.5 efficiencies higher than 7% [9,10].…”

Section: Introductionmentioning

confidence: 99%

Material and solar cell research in microcrystalline silicon

Shah

Meier

Vallat-Sauvain

et al. 2003

Solar Energy Materials and Solar Cells

415

243

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This contribution describes the introduction of hydrogenated microcrystalline silicon (mc-Si:H) as novel absorber material for thin-film silicon solar cells. Work done at IMT Neuch# atel in connection with deposition of mc-Si:H layers by very high frequency glow discharge deposition is related in detail. Corresponding layer properties w.r.t. material microstructure, hydrogen content, stability and electronic transport are referred to. Basic properties of single-junction, entirely microcrystalline, thin-film silicon solar cells are related: Spectral response, stability w.r.t. light-induced degradation, basic solar cell parameters (V oc ; J sc and FF) obtained by IMT Neuch# atel and by other laboratories are listed and commented; the deposition rate issue is addressed. Finally, microcrystalline/amorphous, i.e. ''micromorph'' silicon tandem solar cells, are described, together with recent developments on the research and industrial front.

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“…The possibility to use µ c-Si for the fabrication of photosensitive layers was demonstrated in the early 1990s [48,49], and the first µ c-Si:H solar cells showing reasonable efficiency of 4.6% were fabricated in 1994 [50]. The bandgap of µ c-Si:H is close to that of crystalline Si, which allows extension of the absorption range to red and infrared light.…”

Section: Microcrystalline Si and "Micromorph" Solar Cellsmentioning

confidence: 99%

Amorphous and micromorph Si solar cells: current status and outlook

Avrutin¹,

Izyumskaya²,

Morkoç³

2014

Turk J Phys

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An overview of the current status and prospects of thin-film Si photovoltaics, including both hydrogenated amorphous and microcrystalline Si as well their combination known as micromorph solar cells, with a major focus on the technological development is given. Although thin-film Si solar cells have been one of the first commercially successful photovoltaic devices, today they face a tremendous challenge from variety of bulk Si technologies (mono-and multicrystalline Si) and compound-semiconductor thin-film solar cells, both of which have managed to substantially reduce the production cost and improve power conversion efficiency. Thin-film Si photovoltaics benefiting from the mighty mainstream Si industry have demonstrated the ability to reduce the production cost and cost per peak power; however, the performance improvement of amorphous-Si panels has been only marginal and further progress is hard to expect. The power conversion efficiencies of micromorph solar cells have already exceeded those of amorphous-Si devices.However, to improve their market penetration and even to hold their current share, the micromorph Si solar modules need to improve their performance, which today is approaching 11%, along the path to potential 15%, while keeping the manufacturing cost low. Further progress will require the improvement of light-trapping technologies and contact performance.

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High mobility hydrogenated and oxygenated microcrystalline silicon as a photosensitive material in photovoltaic applications

Abstract: Device grade microcrystalline silicon owing to reduced oxygen contamination Observation of valenceband discontinuity of hydrogenated amorphous silicon/hydrogenated amorphous silicon carbide heterojunction by photocurrentvoltage measurements

Cited by 36 publications

References 0 publications

Stability of microcrystalline silicon for thin film solar cell applications

Stability of microcrystalline silicon for thin film solar cell applications

Material and solar cell research in microcrystalline silicon

Amorphous and micromorph Si solar cells: current status and outlook

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