The great majority of solar cells manufactured today are based on p-type silicon wafers. However, the most efficient modules are made with n-type silicon wafers. This is primarily due to the much greater tolerance of n-type silicon to the dominant defects in p-type material. In this paper we discuss some of the potential advantages and disadvantages of using por n-type silicon for industrial so...

To choose the most suitable solar cell for desert climate, measurements and analysis of the integrated spectral response (ISR) and the electrical power over 32 spectral bands for monocrystalline, polycrystalline and amorphous solar cells have been carried out in Helwan during several seasons under di€erent environmental conditions. The results of ISR show that while the amorphous silicon solar ...

Thin-fi lm silicon solar cells, including hydrogenated amorphous silicon (a-Si:H) single-junction and amorphous/microcrystalline silicon (a-Si:H/ μ c-Si:H) tandem-junction solar cells, are promising candidates for the global terawatt-scale deployment of photovoltaics thanks to the abundance and non-toxicity of their raw materials, and mature fabrication processes. [ 1 , 2 ] Compared to their tr...

Phosphorus ink technology has been demonstrated as a simple and cheap method to realize selective emitter (SE) crystalline silicon solar cells through mass production in a professional photovoltaic company. We have achieved an average conversion efficiency (η) of 19.01% with peak η of 19.27% for the SE solar cells based on commercial-grade p-type silicon substrate, much higher than that of the ...

Renewable energy research is currently a major challenge. In recent years, the worldwide production of crystalline silicon solar cells has increased by approximately 30%.[1] New concepts for solar cells and new silicon feedstock are generated in the labs and on the solar cell market. Hence, the need for quality control and failure analysis of solar cells in research and industry has increased r...

Commercial aluminium and stainless steel sheets were used as substrates for thin film silicon solar cell deposition. The influence of elemental contamination and disturbed film growth on solar cell performance and yield were studied. Diffusion during film growth was found to be more pronounced than thermally activated interdiffusion of existing films. Surface irregularities of the substrate are...

Porous Silicon (PS) has found its broad application for optoelectronics devices specially solar cells applications due to its efficient antireflection coating. This material has advantages such as broaden band gap, wide absorption spectrum and high optical transmission range from 700-1000nm. In this paper, the experimental study of electrochemically prepared porous silicon structures is present...

Hybrid silicon/organic solar cells have been recently extensively investigated due to their simple structure and low-cost fabrication process. However, the efficiency of the solar cells is greatly limited by the barrier height as well as the carrier recombination at the silicon/organic interface. In this work, hydrochloroplatinic acid (H2PtCl6) is employed into the poly(3,4-ethlenedioxythiophen...

We propose the out-diffused metal precipitates (OMP) method to seed metal catalysts for bottom-up silicon wire growth. We fi rst in-diffuse the silicon substrate with a fastdiffusing metal (e.g., copper), and then anneal with a temperature profi le tuned to out-diffuse the metal to favorable nucleation sites on the surface. Vapor–liquid–solid (VLS) silicon wire growth on seeds from the OMP meth...

Ribbon Growth on Substrate (RGS) silicon wafers are casted directly from the silicon melt onto reusable substrates. Material losses by wafer sawing are omitted and high production speeds can be achieved. However, multicrystalline RGS silicon as it is produced today incorporates high densities of crystal defects and impurities limiting the efficiency of the corresponding solar cells. The local i...