Aluminum Oxide For The Surface Passivation Of High Efficiency Silicon Solar Cells PDF Download
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Author | : Armin Richter |
Publisher | : |
Total Pages | : 236 |
Release | : 2015-02-23 |
Genre | : |
ISBN | : 9783839608470 |
Download Aluminum Oxide for the Surface Passivation of High Efficiency Silicon Solar Cells Book in PDF, ePub and Kindle
Author | : Joachim John |
Publisher | : Institution of Engineering and Technology |
Total Pages | : 289 |
Release | : 2018-07-31 |
Genre | : Technology & Engineering |
ISBN | : 1785612468 |
Download Surface Passivation of Industrial Crystalline Silicon Solar Cells Book in PDF, ePub and Kindle
This timely, comprehensive work on solar cell surface passivation will collect and convey the scientific and technological progress provided by universities, research institutes and companies to implement dielectric passivation layers into the solar cell manufacturing process for c-Si solar cells. With a focus on industrial manufacturing it will comprehensively cover all promising techniques and describe the process from material research to full production implementation of dielectric layers for silicon solar cell passivation.
Author | : Martin A. Green |
Publisher | : Trans Tech Publications Ltd |
Total Pages | : 240 |
Release | : 1987-01-01 |
Genre | : Technology & Engineering |
ISBN | : 3035739641 |
Download High Efficiency Silicon Solar Cells Book in PDF, ePub and Kindle
The early chapters comprehensively review the optical and transport properties of silicon. Light trapping is described in detail. Limits on the efficiency of silicon cells are discussed as well as material requirements necessary to approach these limits. The status of current approaches to passifying surfaces, contacts and bulk regions is reviewed. The final section of the book describes the most practical approaches to the fabrication of high-efficiency cells capable of meeting the efficiency targets for both concentrated and non-concentrated sunlight, including a discussion of design and processing approaches for non-crystalline silicon.
Author | : Boris Adrian Veith-Wolf |
Publisher | : |
Total Pages | : |
Release | : 2018 |
Genre | : |
ISBN | : 9783843937085 |
Download Crystalline Silicon Surface Passivation Using Aluminum Oxide: Fundamental Understanding and Application to Solar Cells Book in PDF, ePub and Kindle
Author | : Lachlan E. Black |
Publisher | : Springer |
Total Pages | : 222 |
Release | : 2016-04-15 |
Genre | : Technology & Engineering |
ISBN | : 3319325213 |
Download New Perspectives on Surface Passivation: Understanding the Si-Al2O3 Interface Book in PDF, ePub and Kindle
The book addresses the problem of passivation at the surface of crystalline silicon solar cells. More specifically, it reports on a high-throughput, industrially compatible deposition method for Al2O3, enabling its application to commercial solar cells. One of the main focus is on the analysis of the physics of Al2O3 as a passivating dielectric for silicon surfaces. This is accomplished through a comprehensive study, which moves from the particular, the case of aluminium oxide on silicon, to the general, the physics of surface recombination, and is able to connect theory with practice, highlighting relevant commercial applications.
Author | : Xinyu Zhang |
Publisher | : |
Total Pages | : 0 |
Release | : 2015 |
Genre | : |
ISBN | : |
Download Sputtered Aluminium Oxide and Amorphous Silicon for Silicon Solar Cells Book in PDF, ePub and Kindle
High-efficiency silicon solar cells have been attracting an increased interest in recent years. Surface passivation is essential for various types of high-performance solar cells, particularly when thinner silicon wafers are used to reduce the material cost. Passivating dielectric thin films have been widely studied and used in solar cells designs, these include atomic-layer deposited (ALD) aluminium oxide, plasma-enhanced chemical vapour deposited (PECVD) silicon nitride and PECVD intrinsic amorphous silicon. The aim of this thesis is to develop and optimise an alternative deposition method for surface passivating films: sputtering. Sputtering is especially attractive for industrial production, due to its high throughput, easy and safe operation and global cost-effectiveness. This thesis has focussed on optimising the reactive sputtering of aluminium oxide, using an aluminium target, and the non-reactive sputtering of amorphous silicon, using a silicon target. A key innovation has been the addition of hydrogen to the mix of gasses that form the plasma, which permits to incorporate hydrogen into the films, leading to a significantly improved surface passivation quality compared to non-hydrogenated films. We have achieved the best surface passivation results by sputtered aluminium oxide to date, with an effective surface recombination velocity of 1 cm/s on 1.5 ohm-cm n-type silicon. This result is similar to the SRV of 0.9 cm/s measured on aluminium oxide films deposited by PA-ALD on the same substrates. Good passivation was also achieved on p-type silicon. The investigations into the reactive sputtering process have shown that the film properties are closely related to the oxidation level of the aluminium target, which can be controlled by adjusting process parameters. It has also been found that the presence of hydrogen in the plasma is beneficial for establishing the optimum conditions of the deposition; not only does the surface passivation quality improve, but the reactive sputtering process becomes easier to control as well.We have also shown - for the first time - that intrinsic amorphous silicon (a-Si:H) films by sputtering deposition are capable of providing an excellent passivation of crystalline silicon surfaces. A SRV of 1.5 cm/s on 1.5 ohm-cm n-type silicon and SRV of 9 cm/s on 1 ohm-cm p-type silicon have been achieved, which are comparable to the commonly used PECVD deposited a-Si:H films. After investigating the film properties using Fourier Transform Infrared Spectroscopy (FTIR), we observe that our sputtered a-Si:H films have a characteristic signature in terms of chemical bonding configurations, where several types of silicon-hydrogen bonds exist. From those measurements we have estimated that there is approximately a 4% hydrogen concentration in the films, sufficient to achieve excellent surface passivation. Finally, the thesis also presents initial attempts at developing doped amorphous silicon films, which could enable the development of an all-sputtered silicon heterojunction solar cell technology. Lightly doped a-Si:H films were deposited using a 1% boron doped silicon target and a 0.01% phosphorus doped silicon target. We have found an appropriate way to avoid surface passivation degradation caused by the doped layer deposition onto an intrinsic a-Si:H layer.
Author | : Sara Bakhshi |
Publisher | : |
Total Pages | : 91 |
Release | : 2018 |
Genre | : |
ISBN | : |
Download Excellent Surface Passivation for High Efficiency C-Si Solar Cells Book in PDF, ePub and Kindle
Semiconductor surface clean is sometimes perceived as costly but long recognized as pivotal in determining the final semiconductor device performance and yield. In this contribution, we investigated the effectiveness of crystalline silicon surface cleaning by a simple UV-ozone process in comparison to the industry standard RCA clean for silicon photovoltaic applications. We present a unique method of processing the silicon surface effectively by UV-ozone cleaning. Despite being simple, UV-ozone cleaning results in a superior surface passivation quality that is comparable to high-quality RCA clean. When used as a stack dielectric--UV-ozone oxide overlaid by aluminum oxide--the thickness of UV-ozone oxide plays an important role in determining the passivation quality. Of all treatment times, 15 min of UV-ozone treatment results in an outstanding passivation quality, achieving the effective carrier lifetime of 3 ms and saturation current density of 5 fA/cm2. In addition, we present a simple and effective technique to extract values of electron/hole capture cross-section for the purpose of analyzing the interface passivation quality from already measured surface recombination parameters of saturation current density, interfacial trap density and total fixed charge, instead of measuring on the separately prepared metal-insulated-semiconductor (MIS) samples by the techniques: frequency-dependent parallel conductance or deep-level transient spectroscopy.
Author | : W.R. Fahrner |
Publisher | : Trans Tech Publications Ltd |
Total Pages | : 208 |
Release | : 2006-08-15 |
Genre | : Technology & Engineering |
ISBN | : 3038131024 |
Download Silicon Heterojunction Solar Cells Book in PDF, ePub and Kindle
The world of today must face up to two contradictory energy problems: on the one hand, there is the sharply growing consumer demand in countries such as China and India. On the other hand, natural resources are dwindling. Moreover, many of those countries which still possess substantial gas and oil supplies are politically unstable. As a result, renewable natural energy sources have received great attention. Among these, solar-cell technology is one of the most promising candidates. However, there still remains the problem of the manufacturing costs of such cells. Many attempts have been made to reduce the production costs of conventional solar cells (manufactured from monocrystalline silicon using diffusion methods) by instead using cheaper grades of silicon, and simpler pn-junction fabrication. That is the hero of this book; the heterojunction solar cell.
Author | : Xiaodong Wang |
Publisher | : Springer Science & Business Media |
Total Pages | : 664 |
Release | : 2013-11-01 |
Genre | : Technology & Engineering |
ISBN | : 3319019880 |
Download High-Efficiency Solar Cells Book in PDF, ePub and Kindle
As part of the effort to increase the contribution of solar cells (photovoltaics) to our energy mix, this book addresses three main areas: making existing technology cheaper, promoting advanced technologies based on new architectural designs, and developing new materials to serve as light absorbers. Leading scientists throughout the world create a fundamental platform for knowledge sharing that combines the physics, materials, and device architectures of high-efficiency solar cells. While providing a comprehensive introduction to the field, the book highlights directions for further research, and is intended to stimulate readers’ interest in the development of novel materials and technologies for solar energy applications.
Author | : Alban Jean-Joel Pereau |
Publisher | : |
Total Pages | : |
Release | : 2013 |
Genre | : |
ISBN | : |
Download Rear Surface Passivation for High Efficiency Silicon Solar Cells Book in PDF, ePub and Kindle