Download or read book Electrical Characterisation Modelling and Simulation of Cu In Ga Se S 2 Solar Cells written by Tetiana Lavrenko and published by . This book was released on 2019* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CIGS solar cells, sequential growth process, sulfur-gradient, gallium-gradient, bandgap grading, reciprocity relation, admittance measurements, time-resolved photoluminescence.
Download or read book Electro optical Modeling and Simulation of Cu In Ga Se S 2 Thin film Solar Cells written by and published by . This book was released on 2014 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling and Simulation of Charge Carrier Recombination Dynamics in Cu In Ga Se2 Thin Film Solar Cells written by José Fabio López Salas and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar cells with thin Cu(In,Ga)(S,Se)2 absorber films are well established in the photovoltaics market. They offer an advantage over other thin film technologies thanks to their lower content of elements with high toxicity or low earth abundance like Cd and Te. One approach to further improve the quality of production of these cells is to develop a method of material quality assessment during production that is fast, contactless and non-destructive. Time-resolved photoluminescence (TRPL) measurements offer all these characteristics. This work aims to establish the requirements to extract meaningful information about charge carrier recombination dynamics and solar cell performance parameters from TRPL measurements. To achieve this goal experiments and simulations are carried out. The material parameters are extracted from experiments and then built into the simulation model. Results from experiments also serve as the basis to verify the validity of this model. Parameter variations within the simulations function as one of the main methods in this work to gain deeper physical insight into the processes taking place during TRPL measurements. engl.
Download or read book Solar Cells written by Augustin McEvoy and published by Newnes. This book was released on 2012-12-31 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enormous leaps forward in the efficiency and the economy of solar cells are being made at a furious pace. New materials and manufacturing processes have opened up new realms of possibility for the application of solar cells. Crystalline silicon cells are increasingly making way for thin film cells, which are spawning experimentation with third-generation high-efficiency multijunction cells, carbon-nanotube based cells, UV light for voltage enhancement, and the use of the infrared spectrum for night-time operation, to name only a few recent advances. This thoroughly updated new edition of Markvart and Castaner's Solar Cells, extracted from their industry standard Practical Handbook of Photovoltaics, is the definitive reference covering the science and operation, materials and manufacture of solar cells. It is essential reading for engineers, installers, designers, and policy-makers who need to understand the science behind the solar cells of today, and tomorrow, in order to take solar energy to the next level. - A thorough update to the definitive reference to solar cells, created by a cast of international experts from industry and academia to ensure the highest quality information from multiple perspectives - Covers the whole spectrum of solar cell information, from basic scientific background, to the latest advances in materials, to manufacturing issues, to testing and calibration. - Case studies, practical examples and reports on the latest advances take the new edition of this amazing resource beyond a simple amalgamation of a vast amount of knowledge, into the realm of real world applications
Download or read book Cu In1 xGax Se2 Based Thin Film Solar Cells written by Subba Ramaiah Kodigala and published by Academic Press. This book was released on 2011-01-03 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cu(In1-xGax)Se2 Based Thin Film Solar Cells provides valuable contents about the fabrication and characterization of chalcopyrite Cu(In1-xGax)Se2 based thin film solar cells and modules. The growth of chalcopyrite Cu(In1-xGax)(S1-ySey)2 absorbers, buffers, window layers, antireflection coatings, and finally metallic grids, which are the sole components of solar cells, is clearly illustrated. The absorber, which contains multiple elements, segregates secondary phases if the growth conditions are not well optimized i.e., the main drawback in the fabrication of solar cells. More importantly the solutions for the growth of thin films are given in detail. The properties of all the individual layers and single crystals including solar cells analyzed by different characterization techniques such as SEM, AFM, XPS, AES, TEM, XRD, optical, photoluminescence, and Raman spectroscopy are explicitly demonstrated. The electrical analyses such as conductivities, Hall mobilities, deep level transient spectroscopy measurements etc., provide a broad picture to understand thin films or single crystals and their solar cells. The book clearly explains the working principle of energy conversion from solar to electrical with basic sciences for the chalcopyrite based thin film solar cells. Also, it demonstrates important criteria on how to enhance efficiency of the solar cells and modules. The effect of environmental factors such as temperature, humidity, aging etc., on the devices is mentioned by citing several examples. - Illustrates a number of growth techniques to prepare thin film layers for solar cells - Discusses characterization techniques such as XRD, TEM, XPS, AFM, SEM, PL, CL, Optical measurements, and Electrical measurements - Includes I-V, C-V measurements illustrations - Provides analysis of solar cell efficiency - Presents current trends in thin film solar cells research and marketing
Download or read book Development Characterization and Modeling of CuGaSe2 Cu In Ga Se2 Thin film Tandem Solar Cells written by Jiyon Song and published by . This book was released on 2006 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chalcogenide Photovoltaics written by Roland Scheer and published by John Wiley & Sons. This book was released on 2011-03-31 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first comprehensive description of the most important material properties and device aspects closes the gap between general books on solar cells and journal articles on chalcogenide-based photovoltaics. Written by two very renowned authors with years of practical experience in the field, the book covers II-VI and I-III-VI2 materials as well as energy conversion at heterojunctions. It also discusses the latest semiconductor heterojunction models and presents modern analysis concepts. Thin film technology is explained with an emphasis on current and future techniques for mass production, and the book closes with a compendium of failure analysis in photovoltaic thin film modules. With its overview of the semiconductor physics and technology needed, this practical book is ideal for students, researchers, and manufacturers, as well as for the growing number of engineers and researchers working in companies and institutes on chalcogenide photovoltaics.
Download or read book Growth and Characterisation of Cu In Ga Se2 Thin Films for Solar Cell Applications written by E. Ahmed and published by . This book was released on 1995 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practical Handbook of Photovoltaics written by Augustin McEvoy and published by Elsevier. This book was released on 2003-10-30 with total page 1015 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the growing sustainable and renewable energy movement, the design, manufacture and use of photovoltaic devices is increasing in pace and frequency. The Handbook of Photovoltaics will be a 'benchmark' publication for those involved in the design, manufacture and use of these devices.The Handbook covers the principles of solar cell function, the raw materials, photovoltaic systems, standards, calibration, testing, economics and case studies. The editors have assembled a cast of internationally-respected contributors from industry and academia. The report is essential reading for: Physicists, electronic engineers, designers of systems, installers, architects, policy-makers relating to photovoltaics.
Download or read book Proceedings of the 2nd International Conference on Electronic Engineering and Renewable Energy Systems written by Bekkay Hajji and published by Springer Nature. This book was released on 2020-08-14 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes papers presented at the Second International Conference on Electronic Engineering and Renewable Energy (ICEERE 2020), which focus on the application of artificial intelligence techniques, emerging technology and the Internet of things in electrical and renewable energy systems, including hybrid systems, micro-grids, networking, smart health applications, smart grid, mechatronics and electric vehicles. It particularly focuses on new renewable energy technologies for agricultural and rural areas to promote the development of the Euro-Mediterranean region. Given its scope, the book is of interest to graduate students, researchers and practicing engineers working in the fields of electronic engineering and renewable energy.
Download or read book Cu In Ga S Se 2 Solar Cells with Varied Hetero Contact Configuration written by Johannes Schoneberg and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Characterization Techniques for Thin Film Solar Cells written by Daniel Abou-Ras and published by John Wiley & Sons. This book was released on 2016-07-13 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on advanced characterization methods for thin-film solar cells that have proven their relevance both for academic and corporate photovoltaic research and development. After an introduction to thin-film photovoltaics, highly experienced experts report on device and materials characterization methods such as electroluminescence analysis, capacitance spectroscopy, and various microscopy methods. In the final part of the book simulation techniques are presented which are used for ab-initio calculations of relevant semiconductors and for device simulations in 1D, 2D and 3D. Building on a proven concept, this new edition also covers thermography, transient optoelectronic methods, and absorption and photocurrent spectroscopy.
Download or read book Wide Gap Chalcopyrites written by Susanne Siebentritt and published by Springer Science & Business Media. This book was released on 2006-02-25 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chalcopyrites, in particular those with a wide band gap, are fascinating materials in terms of their technological potential in the next generation of thin-film solar cells and in terms of their basic material properties. They exhibit uniquely low defect formation energies, leading to unusual doping and phase behavior and to extremely benign grain boundaries. This book collects articles on a number of those basic material properties of wide-gap chalcopyrites, comparing them to their low-gap cousins. They explore the doping of the materials, the electronic structure and the transport through interfaces and grain boundaries, the formation of the electric field in a solar cell, the mechanisms and suppression of recombination, the role of inhomogeneities, and the technological role of wide-gap chalcopyrites.
Download or read book Characterization of Photocurrent and Voltage Limitations of Copper indium Gallium selenide Thin film Polycrystalline Solar Cells written by Christopher P. Thompson and published by ProQuest. This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin film polycrystalline CdS/Cu(In, Ga)(Se, S) 2 solar cells have great potential as a candidate for high efficiency, high throughput, low cost production. Cu(In, Ga)Se 2 devices have laboratory efficiencies approaching 20% and module efficiencies around 11%. However, most progress in device optimization has been the result of empirical studies; little is known about the device defect structure, and even less is known about the control of defects within the Cu(In, Ga)(Se, S) 2 absorber. Despite years of study, the complex nature of the Cu(In, Ga)(Se, S) 2 system has made progress towards a fundamental understanding of device behavior, and limiting defects a slow affair. The goal of this work is to shed further light on the nature of the limitations on photocurrent and voltage. The main topics covered in this thesis are: (1) fitting quantum efficiency curves calculated from an analytical model to measured quantum efficiency curves, and (2) Open circuit voltage temperature measurements. For the first section, series of devices with varying absorber layers will be analyzed, using the minority carrier diffusion length as the only fitting parameter. All other variables within the model will be supplied from direct and indirect measurements. We show that by using quantum efficiency, capacitance-voltage, and current-voltage measurements, we can generate excellent fits using only diffusion length as a fitting parameter. It is found that for Cu(In, Ga)Se 2 devices with E G [approximate]1.2eV, L=1000-1500nm.; for wide bandgap devices, with E G [approximate]1.4eV, L=10-400nm; for devices with E G [approximate]1.2eV, deposited with a low substrate temperature, L=650nm. Wide bandgap devices long wavelength collection is limited by minority carrier diffusion. For the second section, V OC (T) measurements are taken on devices with a wide range of absorbers, including some previously un-measured devices; absorbers grown with a Na deficiency. Analysis will focus on the activation energy of the dominant recombination mechanism, as well as low temperature saturation of V OC . Both of these parameters shed light on the limiting properties of devices. Cu(In, Ga)Se 2 with bandgap ranging from 1.2eV-1.4eV are limited by Shockley Read Hall recombination, and have a ratio of saturation voltage to bandgap of 80%. Lowering the electrical quality of the absorber by depositing the Cu(In, Ga)Se 2 layer at lower substrate temperature decreases the ratio of saturation voltage to bandgap to 64%, as a result of increased bandtail defect states. CuInS 2 devices and Cu(In, Ga)Se 2 devices with low or no Na are limited by hetero-interface recombination, and have a saturation voltage to bandgap ratio of ~60%.
Download or read book New Deposition Process of Cu In Ga Se2 Thin Films for Solar Cell Applications written by Himal Khatri and published by . This book was released on 2009 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molybdenum (Mo) is currently the most common material used for Cu(In, Ga)Se2 solar cell back contacts. The first objective of this study is to utilize in-situ and ex-situ characterization techniques to investigate the growth, as well as the physical and chemical properties, of Mo thin films deposited by RF magnetron sputtering onto soda-lime glass (SLG) substrates. The effects of the deposition pressure on the nucleation and growth mechanisms that ultimately influence morphology and grain structure have been studied. Correspondence between real time spectroscopic ellipsometry (RTSE), X-ray diffraction (XRD), atomic force microscopy (AFM), and four-point probe resistivity measurements indicate that increasing deposition pressure leads to smaller average grain sizes and higher oxygen content in the Mo thin films. Changes of the material properties were also evaluated by changing RF power. It is observed that higher RF power, results in higher conductivity films. The second and overall objective of this work is to focus on the deposition and characterization of the Cu(In, Ga)Se2 absorber layer using the hybrid co-sputtering and evaporation process, which has potential for commercial PV. Solar cells were completed with a range of elemental compositions in the absorber layer, keeping a constant profile of Ga and varying Cu concentrations. The slightly Cu deficient Cu(In, Ga)Se2 films of band gap ~1.15 eV fabricated by this process consist of a single chalcopyrite phase and device efficiencies up to 12.4% were achieved for the composition ratios (x, y) = (0.30, 0.88). Correspondence between energy dispersive X-ray spectroscopy (EDS), X-ray diffraction, transmission and reflection (T & R), four-point probe resistivity, and current density-voltage (J-V) measurements indicate that increased Cu concentration leads to the incorporation of a secondary phase Cu2-xSe compound in the Cu(In, Ga)Se2 films, which is detrimental to cell performance. The third objective of this work is to evaluate the Cu2-xSe material properties by employing in-situ RTSE, as well as ex-situ SE and various other characterization techniques. SE revealed that the dielectric function spectra of Cu2-xSe evolve with temperature, providing insights into the evolution of transport properties and critical point structures. At room temperature, semi-metallic behavior of Cu2-xSe thin films was revealed by SE and Hall Effect measurements. These characteristics serve as key inputs for optical modeling of complex layer structures of Cu(In, Ga)Se2 films grown by 2- and 3-step processes.
Download or read book Electrical Characterization of CIGS Solar Cells written by Tian Xie and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cu(In,Ga)Se2-based thin-film solar cells are one of the most promising photovoltaic technologies nowadays. Despite significant improvements to the performance of Cu(In,Ga)Se2 (CIGS) in recent decades, the electrical characteristics of CIGS solar cells still have not been completely understood, especially the origins and the properties of metastabilities. This project focuses on the electrical characterization of CIGS based thin film devices with different Cu contents. Different characterization techniques have been used in this project. With varying Cu content, the structural properties, basic parameters, space charge distribution, temperature dependent properties, reverse bias- and white light illumination- induced metastable effects and breakdown behaviors have been investigated.
Download or read book Characterization of Microstructural and Chemical Features in Cu In Ga Se S based Thin film Solar Cells written by Ankush R. Halbe and published by . This book was released on 2006 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a sample with a transparent back contact, a 10 nm Mo layer was deposited on ITO (indium tin oxide) before deposition of the CIGS2 (Cu(In,Ga)S2) layer. EFTEM maps indicate that a MoS2 layer does not form for such a Mo/MoS2-ITO back contact. Instead, absorber layer material diffuses through the thin Mo layer onto the ITO forming two layers of CIGS2 on either side of Mo with different compositions.
