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High-Efficiency Solar Cells

High-Efficiency Solar Cells
  • Author : Xiaodong Wang,Zhiming M. Wang
  • Publisher :Unknown
  • Release Date :2013-11-01
  • Total pages :656
  • ISBN : 9783319019888
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Summary : 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.

High-Efficient Low-Cost Photovoltaics

High-Efficient Low-Cost Photovoltaics
  • Author : Vesselinka Petrova-Koch
  • Publisher :Unknown
  • Release Date :2008-11-20
  • Total pages :225
  • ISBN : 9783540793588
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Summary : A bird's-eye view of the developmental trends and problems of recent photovoltaics is presented. The worldwide effort to develop high-efficiency low-cost PV modules, making use of most efficient solar cells and clever low-cost solar concentrators is described.

Next Generation Photovoltaics

Next Generation Photovoltaics
  • Author : A. Martí,A. Luque
  • Publisher :Unknown
  • Release Date :2003-09-01
  • Total pages :136
  • ISBN : 9781420033861
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Summary : Although photovoltaics are regarded by many as the most likely candidate for long term sustainable energy production, their implementation has been restricted by the high costs involved. Nevertheless, the theoretical limit on photovoltaic energy conversion efficiency-above 85%-suggests that there is room for substantial improvement of current commercially available solar cells, both silicon and thin-film based. Current research efforts are focused on implementing novel concepts to produce a new generation of low-cost, high-performance photovoltaics that make improved use of the solar spectrum. Featuring contributions from pioneers of next generation photovoltaic research, Next Generation Photovoltaics: High Efficiency through Full Spectrum Utilization presents a comprehensive account of the current state-of-the-art in all aspects of the field. The book first discusses topics, such as multi-junction solar cells (the method closest to commercialization), quantum dot solar cells, hot carrier solar cells, multiple quantum well solar cells, and thermophotovoltaics. The final two chapters of the book consider the materials, fabrication methods, and concentrator optics used for advanced photovoltaic cells. This book will be an essential reference for graduate students and researchers working with solar cell technology.

High Efficiency Solar Cell Based on Full PVD Processed Cu(In, Ga)Se2/CdIn2S4 Heterojunction

High Efficiency Solar Cell Based on Full PVD Processed Cu(In, Ga)Se2/CdIn2S4 Heterojunction
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2017
  • Total pages :229
  • ISBN : OCLC:1051802783
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Summary : Abstract : The original goal of our study is to synthesize by co‐evaporation the phase that could be formed at the interface between polycrystalline p‐Cu(In, Ga)Se2 treated with KF and n‐CdS. Hence, a new buffer layer, CdIn2 S4 (C24), deposited by co‐evaporation is presented for the use in thin film solar cells, exhibiting device efficiencies as high as 16.2%, comparable to that obtained on a reference standard CdS‐buffered device. The physico‐chemical and optical properties of close to stoichiometry 400 nm‐thick films of C24 show similar properties to what has been reported in the literature for single crystals. The layer stack used for solar cells is investigated by transmission electron microscopy, showing the formation of an ultrathin Cd‐deficient C24 layer at the CIGSe/C24 interface, while a clear lattice match is observed at the C24/ZnO interface. Advanced electrical characterizations of the devices suggest that the output voltage and fill factor of the solar cells based on Cu(In, Ga)Se2 /(PVD)C24 are limited by tunneling‐enhanced recombination through extended band tail states. These results open new routes to explain the superiority of wet processes used for the junction formation compared to vacuum‐based approaches. Abstract : Polycrystalline p‐Cu(In, Ga)Se2 ‐thin‐film‐based solar cell is the best performing device when associated with solution deposited CdS as n‐type heterojunction partner. Here, by co‐evaporating CdIn2 S4 as alternative to wet‐processed CdS, the cells achieve 16 % conversion efficiency. The performance of this full‐PVD‐processed device remains limited by lowered junction quality, probably inherent to less‐passivated crystal defects of the Cu(In, Ga)Se2 layer.

Ion Implantation for High-Efficiency Silicon Solar Cells.

Ion Implantation for High-Efficiency Silicon Solar Cells.
  • Author : Ralph Müller
  • Publisher :Unknown
  • Release Date :2017-01-12
  • Total pages :246
  • ISBN : 9783839610749
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Summary : The profitability of the whole photovoltaic system can be effectively increased by the use of advanced silicon solar cells with a higher conversion efficiency potential and new technologies are needed to keep the fabrication effort low. Ion implantation allows for single side and even patterned doping of silicon wafers, so this technique could help to simplify the process chain of complex high-efficiency silicon solar cells. In this thesis, the suitability of ion implantation for the fabrication of modern solar cells was investigated. The implantation of mass-separated boron or phosphorus ions and subsequent furnace annealing was used to study the charge carrier recombination due to implantation defects and obtain doping profiles for an evaluation at the device level. Furthermore, novel process sequences combining ion implantation and furnace diffusion for the simplified doping of back-junction back-contact cells were developed and evaluated with respect to the influence of a reverse breakdown and a weak front-side doping on the solar cell performance.

Engineered Type-II Heterostructures for High Efficiency Solar Cells

Engineered Type-II Heterostructures for High Efficiency Solar Cells
  • Author : Hwang Jinyoung
  • Publisher :Unknown
  • Release Date :2014-02
  • Total pages :136
  • ISBN : 3844306145
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Summary : The third-generation solar cell technologies are aiming to achieve substantially higher efficiency over the Shockley-Queisser limit of a single junction solar cell while maintaining low fabrication cost per area in order to become cost competitive with coal fuel. The demanding of a breakthrough in efficiency leads the research to the development of photovoltaic devices with a new concept of fundamental operation other than the structure of single junction solar cells and to the employment of various materials and nanostructures to the devices. The purpose of the projects in this book to present nanostructures with type-II heterointerface that can provide additional possibilities to certain types of third generation solar cells for achieving an efficiency close to the theoretical maximum limit.

Development of High Efficiency GaAs Polycrystal Solar Cells. Quarterly Technical and Topical Report No. 2, 24 April Oct 1978-23 July 1978

Development of High Efficiency GaAs Polycrystal Solar Cells. Quarterly Technical and Topical Report No. 2, 24 April Oct 1978-23 July 1978
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1978
  • Total pages :229
  • ISBN : OCLC:1066049483
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Summary : The objectives of this program are to develop a thin film polycrystal GaAs solar cell technology with the potential of yielding cells with 12 to 15% efficiency and to develop thin film growth techniques which are compatible with the low cost production goal of $100 to 300/kW peak. Techniques conceived and initiated during the first quarter have seen initial application for measurements and fabrication of solar cells. The scanning Auger potential profiling and cathode-conductivity measurements and scanning laser system are beginning to yield useful results. Transient capacitance measurement of minority carrier lifetimes and Schottky barrier comparisons of LPE and MBE polycrystalline GaAs are described. Theoretical investigations of GaAs dislocations and polycrystalline solar cell modeling have begun. Oxidation of GaAs for MIS cell fabrication is described, and promising values reported for initial MIS single crystal solar cell performance.

Seventh E.C. Photovoltaic Solar Energy Conference

Seventh E.C. Photovoltaic Solar Energy Conference
  • Author : Adolf Goetzberger,Willeke Palz,G. Willeke
  • Publisher :Unknown
  • Release Date :2013-06-29
  • Total pages :1194
  • ISBN : 9789400938175
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Summary : Proceedings of the International Conference held at Seville, Spain, October 27-31, 1986.

Solar Cells

Solar Cells
  • Author : Leonid A. Kosyachenko
  • Publisher :Unknown
  • Release Date :2015-10-22
  • Total pages :398
  • ISBN : 9789535121848
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Summary : This book contains chapters in which the problems of modern photovoltaics are considered. The majority of the chapters provide an overview of the results of research and development of different types of solar cells. Such chapters are completed by a justification for a new solar cell structure and technology. Of course, highly effective solar energy conversion is impossible without an in-depth examination of the solar cell components as physical materials. The relations between structural, thermodynamic, and optical properties of the physical material without addressing the band theory of solids are of both theoretical and practical interest. Requirements formulated for the material are also to be used for maximally efficient conversion of solar radiation into useful work.

High Efficiency Silicon Solar Cells

High Efficiency Silicon Solar Cells
  • Author : Martin A. Green
  • Publisher :Unknown
  • Release Date :1987-01-01
  • Total pages :240
  • ISBN : 9783035739640
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Summary : 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.

High Efficiency, Low Cost Solar Cells Manufactured Using 'Silicon Ink' on Thin Crystalline Silicon Wafers

High Efficiency, Low Cost Solar Cells Manufactured Using 'Silicon Ink' on Thin Crystalline Silicon Wafers
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2011
  • Total pages :44
  • ISBN : OCLC:727184790
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Summary : Reported are the development and demonstration of a 17% efficient 25mm x 25mm crystalline Silicon solar cell and a 16% efficient 125mm x 125mm crystalline Silicon solar cell, both produced by Ink-jet printing Silicon Ink on a thin crystalline Silicon wafer. To achieve these objectives, processing approaches were developed to print the Silicon Ink in a predetermined pattern to form a high efficiency selective emitter, remove the solvents in the Silicon Ink and fuse the deposited particle Silicon films. Additionally, standard solar cell manufacturing equipment with slightly modified processes were used to complete the fabrication of the Silicon Ink high efficiency solar cells. Also reported are the development and demonstration of a 18.5% efficient 125mm x 125mm monocrystalline Silicon cell, and a 17% efficient 125mm x 125mm multicrystalline Silicon cell, by utilizing high throughput Ink-jet and screen printing technologies. To achieve these objectives, Innovalight developed new high throughput processing tools to print and fuse both p and n type particle Silicon Inks in a predetermined pat-tern applied either on the front or the back of the cell. Additionally, a customized Ink-jet and screen printing systems, coupled with customized substrate handling solution, customized printing algorithms, and a customized ink drying process, in combination with a purchased turn-key line, were used to complete the high efficiency solar cells. This development work delivered a process capable of high volume producing 18.5% efficient crystalline Silicon solar cells and enabled the Innovalight to commercialize its technology by the summer of 2010.

Development of High Efficiency Cascade Solar Cells

Development of High Efficiency Cascade Solar Cells
  • Author : Research Triangle Institute
  • Publisher :Unknown
  • Release Date :1980
  • Total pages :15
  • ISBN : OCLC:1013877199
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Summary :

Electricity from Photovoltaic Solar Cells: High-efficiency solar cells

Electricity from Photovoltaic Solar Cells: High-efficiency solar cells
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1986
  • Total pages :229
  • ISBN : PSU:000013044114
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Summary :

Development of High Efficiency Solar Cells

Development of High Efficiency Solar Cells
  • Author : D. L. Miller,Marshall J. Cohen,J. S. Jr Harris,Joseph John Loferski,Joseph M. Ballantyne
  • Publisher :Unknown
  • Release Date :1979
  • Total pages :172
  • ISBN : UOM:39015095026988
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Summary :

Development of High Efficiency Cascade Solar Cells. Quarterly Technical Progress Report

Development of High Efficiency Cascade Solar Cells. Quarterly Technical Progress Report
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1979
  • Total pages :229
  • ISBN : OCLC:1065875854
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Summary : Research has continued in the development of selected ternary and quaternary III-V materials that are potential candidates for cascade solar cell applications. In addition, various simple and multi-junction cascade solar cell components have been fabricated and evaluated in a continuing study of several different solar cell designs (materials combinations). During the present reporting period, work has concentrated on the following major areas: GaAlAs/GaAs cell development; AlGaAsSb/GaAsSb materials development; GaInP materials development via VPE; inverted structure development; and MO/CVD growth system work at NCSU. Progress in each of these areas is summarized.

Solar Cells

Solar Cells
  • Author : Augustin Joseph McEvoy,Luis Castañer,T. Markvart
  • Publisher :Unknown
  • Release Date :2012
  • Total pages :641
  • ISBN : 9780123869647
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Summary : 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

Silicon Heterojunction Solar Cells

Silicon Heterojunction Solar Cells
  • Author : W.R. Fahrner,M. Muehlbauer,H.C. Neitzert
  • Publisher :Unknown
  • Release Date :2006-08-15
  • Total pages :208
  • ISBN : 9783038131021
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Summary : 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.

Small-Molecule Semiconductors for High-Efficiency Organic Solar Cells

Small-Molecule Semiconductors for High-Efficiency Organic Solar Cells
  • Author : Chuanlang Zhan,Donghong Yu
  • Publisher :Unknown
  • Release Date :2019-08-15
  • Total pages :184
  • ISBN : 9782889459803
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Summary :

High-efficiency Solar Cells for Large-scale Electricity Generation

High-efficiency Solar Cells for Large-scale Electricity Generation
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2008
  • Total pages :229
  • ISBN : OCLC:727355730
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Summary : One strategy for helping the solar industry to grow faster is to use very high efficiency cells under concentrating optics. By using lenses or mirrors to concentrate the light, very small solar cells can be used, reducing the amount of semiconductor material and allowing use of higher efficiency cells, which are now>40% efficient.

Development of High-efficiency Solar Cells on Silicon Web. First Quarterly Progress Report, April 20-July 15, 1984

Development of High-efficiency Solar Cells on Silicon Web. First Quarterly Progress Report, April 20-July 15, 1984
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1984
  • Total pages :229
  • ISBN : OCLC:1065891996
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Summary : The major objective of the work reported is to improve web base material with a goal toward obtaining solar cell efficiencies in excess of 18% (AM1). The program consists of the investigation of carrier loss mechanisms in web silicon, development of techniques to reduce carrier recombination in web, and web cell fabrication using effective surface passivation. Web surfaces have been bevelled with the intention of measuring the electrical activity of the twin plane. Web crystals have been intentionally contaminated with vanadium and titanium to examine the twin-plane-assisted internal gettering by DLTS. Model calculations were done to see the effect of twin-plane activity on V/sub oc/ as a function of resistivity of the web material. Experiments were initiated to study the effect of heat treatment and gettering on the minority carrier diffusion length in webs. Fabrication of high-efficiency web cells using several web crystals was initiated. These cells will include surface passivation and double-layer antireflection coating. (LEW).

High-Efficiency Crystalline Silicon Solar Cells

High-Efficiency Crystalline Silicon Solar Cells
  • Author : Eun-Chel Cho,Hae-Seok Lee
  • Publisher :Unknown
  • Release Date :2021-01-06
  • Total pages :90
  • ISBN : 9783039436293
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Summary : This book is composed of 6 papers. The first paper reports a novel technique for the selective emitter formation by controlling the surface morphology of Si wafers. Selective emitter (SE) technology has attracted renewed attention in the Si solar cell industry to achieve an improved conversion efficiency of passivated-emitter rear-contact (PERC) cells. In the second paper, the temperature dependence of the parameters was compared through the PERC of the industrial-scale solar cells. As a result of their analysis, PERC cells showed different temperature dependence for the fill factor loss as temperatures rose. The third paper reports the effects of carrier selective front contact layer and defect state of hydrogenated amorphous silicon passivation layer/n-type crystalline silicon interface. The results demonstrated the effects of band offset determined by band bending at the interface of the passivation layer and carrier selective front contact layer. In addition, the nc-SiOx: H CSFC layer not only reduces parasitic absorption loss but also has a tunneling effect and field-effect passivation. The fourth paper reports excimer laser annealing of hydrogenated amorphous silicon film for TOPCon solar cell application. This paper analyzes the crystallization of a-Si:H via excimer laser annealing (ELA) and compared this process with conventional thermal annealing. The fifth paper reports the contact mechanism between Ag–Al and Si and the change in contact resistance (Rc) by varying the firing profile. Rc was measured by varying the belt speed and peak temperature of the fast-firing furnace. The sixth paper reports a silicon tandem heterojunction solar cell based on a ZnO/Cu2O subcell and a c-Si bottom subcell using electro-optical numerical modeling. The buffer layer affinity and mobility together with a low conduction band offset for the heterojunction are discussed, as well as spectral properties of the device model.