Amorphous solar cells, the micromorph concept and the role of VHF-GD deposition technique
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Microcrystalline silicon growth using very high frequency-glow discharge PECVD has been studied under conditions of high pressure and high VHF-power conditions. Hereby, the influence of the total gas flow and the silane concentration on the deposition rate ...
In the present paper, we report on thin-film microcrystalline silicon solar cells grown at high deposition rates on back-reflectors with optimized light-scattering capabilities. A single-junction solar cell with a conversion efficiency of η = 7.8% (2 μm th ...
The aim of this communication is to show that it is possible to extend the model of the electronic transport developed for amorphous silicon (a-Si:H) to microcrystalline silicon (μc-Si:H). By describing the electronic transport with the μ0τR products (mobi ...
Zinc oxide (ZnO) is a material that belongs to the family of Transparent Conductives Oxides (TCO). Its non-toxicity and the abundant availability in the Earth's crust of its components make it an ideal candidate as electrical transparent contact for thin-f ...
Porous silicon (PS) thin films have been prepd. by electrochem. anodization of p-Si in HF-H2O-EtOH soln. and they have been used as substrate material for the prepn. of iridium oxide based electrodes (PS/IrO2) using the thermal decompn. technique. The morp ...
We present the experimental results obtained with a novel monolithic silicon pixel detector which consists in depositing a n-i-p hydrogenated amorphous silicon (a-Si:H) diode straight above the readout ASIC (this technology is called Thin Film on ASIC, TFA ...
Hydrogenated microcrystalline silicon i-layers were deposited with a fixed silane concentration on various substrates and incorporated into n-i-p solar cells. 'Average crystallinity' and detailed microstructure of layers and devices were evaluated by X-ray ...
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A fast and sensitive method for measurement of spectral dependence of the optical absorption coefficient α(E) in thin films of photosensitive materials is introduced. A Fourier transform infrared (FTIR) spectrometer is used with a photoconductive sample as ...
We investigate the hydrogen related bonding structure in hydrogenated polymorphous silicon films (pm-Si:H) and hydrogenated microcrystalline silicon. Infra-red spectra reveal some new features for both kinds of films. namely new modes appearing in the stre ...
