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II-IV Compound Semiconductor Photovoltaic Materials: Volume 668

II-IV Compound Semiconductor Photovoltaic Materials: Volume 668 PDF Author: Robert Birkmire
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 608

Book Description
This book focuses on materials issues related to Cu(In,Ga)(Se,S)2 and CdTe-based polycrystalline thin-film photovoltaic solar cells and related oxides and chalcogenides. Phase equilibrium and thermochemical kinetic aspects of the absorber layer formation of CdTe and Cu(In,Ga)(Se,S)2 are emphasized and several papers on micro-analytical analysis report on detailed structural properties of thin films. The use of flexible plastic or metal foil substrates as an alternative to glass is addressed in terms of solar-cell performance and limitations imposed by the nature of the substrates. Properties of defects and interfaces in CdTe and CIGSS are highlighted using electrical, optical, and micro-analytical tools. While film properties are correlated to device physics, controversy still exists on the detailed operation of both CdTe and CIGSS devices. Topics include: materials and synthesis; thin films on alternate substrates; defects; growth and junction formation; surfaces and interfaces and film and device characterization.

II-IV Compound Semiconductor Photovoltaic Materials: Volume 668

II-IV Compound Semiconductor Photovoltaic Materials: Volume 668 PDF Author: Robert Birkmire
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 608

Book Description
This book focuses on materials issues related to Cu(In,Ga)(Se,S)2 and CdTe-based polycrystalline thin-film photovoltaic solar cells and related oxides and chalcogenides. Phase equilibrium and thermochemical kinetic aspects of the absorber layer formation of CdTe and Cu(In,Ga)(Se,S)2 are emphasized and several papers on micro-analytical analysis report on detailed structural properties of thin films. The use of flexible plastic or metal foil substrates as an alternative to glass is addressed in terms of solar-cell performance and limitations imposed by the nature of the substrates. Properties of defects and interfaces in CdTe and CIGSS are highlighted using electrical, optical, and micro-analytical tools. While film properties are correlated to device physics, controversy still exists on the detailed operation of both CdTe and CIGSS devices. Topics include: materials and synthesis; thin films on alternate substrates; defects; growth and junction formation; surfaces and interfaces and film and device characterization.

II-IV Compound Semiconductor Photovoltaic Materials: Proceedings of the Materials Research Society Symposium, 16-20 April 2001, San Francisco, California

II-IV Compound Semiconductor Photovoltaic Materials: Proceedings of the Materials Research Society Symposium, 16-20 April 2001, San Francisco, California PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

Book Description


Solution Processing for Copper Indium Sulfide Solar Cells

Solution Processing for Copper Indium Sulfide Solar Cells PDF Author: Stephen Thacker Connor
Publisher: Stanford University
ISBN:
Category :
Languages : en
Pages : 99

Book Description
In recent years, the field of photovoltaics has become increasingly important due to rising energy demand and climate change. While most solar cells are currently composed of crystalline silicon, devices with thinner films of inorganic absorber materials might allow production at a greater scale due to their lower materials cost. In particular, thin films of CuInS2 are promising solar absorber materials due to their high efficiencies and low required thicknesses. However, the fabrication of thin film solar cells currently requires expensive vacuum techniques. As an alternative, solution-based deposition techniques have been proposed as a route to low-cost and high-throughput electronic device fabrication. I have studied how film growth depends on solutuion deposited precursor film quality, with the goal of producing large grained films of CuInS2 through solution processing. In the first approach, we used solvothermal decomposition of organometallic precursors at moderate temperatures to produce nanoparticles of CuInS2. Thin films of these nanoparticles were cast onto molybdenum coated glass and further processed to create CuInS2 solar cells. We found that performance was dependent on film porosity, grain size, and stoichiometry of the nanoparticles. Films with grain sizes of ~200nm were attained, from which 1.3% efficient solar cells were made. In addition, we showed that this synthesis could be extended to produce CuInS2 nanoparticles with partial substitution of Fe, Zn, and Ga. In the second approach, we synthesized an air-stable hybrid organometallic/nanoparticle ink at room temperature in ambient conditions through a vulcanization reaction. This ink could be coated onto substrates in smooth layers, and further reactive annealing formed large grained CuInS2 films. This process was characterized, and a correlation between residual carbon and grain growth was found. Additionally, the chemical transformation between precursor layers and final sulfide thin film was analyzed, with an emphasis on the difference between sulfurization and selenization. We demonstrated that the sulfurization process was producing morphological defects due to its nucleation limited growth mechanism. However, it was modified to more closely resemble the diffusion limited selenization mechanism, thus producing flat films of CuInS2 with grain sizes of ~500nm.

Spectroscopic Ellipsometry for Photovoltaics

Spectroscopic Ellipsometry for Photovoltaics PDF Author: Hiroyuki Fujiwara
Publisher: Springer
ISBN: 3319951386
Category : Science
Languages : en
Pages : 628

Book Description
Spectroscopic ellipsometry has been applied to a wide variety of material and device characterizations in solar cell research fields. In particular, device performance analyses using exact optical constants of component layers and direct analyses of complex solar cell structures are unique features of advanced ellipsometry methods. This second volume of Spectroscopic Ellipsometry for Photovoltaics presents various applications of the ellipsometry technique for device analyses, including optical/recombination loss analyses, real-time control and on-line monitoring of solar cell structures, and large-area structural mapping. Furthermore, this book describes the optical constants of 148 solar cell component layers, covering a broad range of materials from semiconductor light absorbers (inorganic, organic and hybrid perovskite semiconductors) to transparent conductive oxides and metals. The tabulated and completely parameterized optical constants described in this book are the most current resource that is vital for device simulations and solar cell structural analyses.

Ferroelectric Thin Films X: Volume 688

Ferroelectric Thin Films X: Volume 688 PDF Author: Materials Research Society. Meeting
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 456

Book Description
The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.

Luminescence and Luminescent Materials: Volume 667

Luminescence and Luminescent Materials: Volume 667 PDF Author: Peter C. Schmidt
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 292

Book Description
The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.

Nanostructures and Thin Films for Multifunctional Applications

Nanostructures and Thin Films for Multifunctional Applications PDF Author: Ion Tiginyanu
Publisher: Springer
ISBN: 3319301985
Category : Technology & Engineering
Languages : en
Pages : 585

Book Description
This book is focused on recent advances in the development of thin films for photovoltaic applications, TiO2/WO3 bi-layers for applications with enhanced photo-catalytic properties, nanometer oxide and hydroxide films for anticorrosive coatings, surface passivation in chemical industries, micro- and nanoelectronics, trilayers of metglas and lead free piezoelectrics for magnetic field sensors, current sensors, spintronics, microwave and read/write devices. Diluted ferromagnetic alloy films are also considered for superconducting spintronics based on superconducting spin-valves. Thermal properties of segmented nanowires are analyzed with respect to thermoelectric applications. Recent advances in template production of nanocomposites are also reviewed with particular focus on technologies for template assisted formation of metal nanotubes. Some elements related to abrasive flow machining (AFM), specifically state of the art elements of technological systems and construction of equipment are presented. The book is written for researchers in materials science, nanotechnologies, PhD students and graduate student.

Progress in Semiconductor Materials for Optoelectronic Applications: Volume 692

Progress in Semiconductor Materials for Optoelectronic Applications: Volume 692 PDF Author: Eric D. Jones
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 768

Book Description
The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.

Thin-Film Compound Semiconductor Photovoltaics - 2007: Volume 1012

Thin-Film Compound Semiconductor Photovoltaics - 2007: Volume 1012 PDF Author: Timothy Gessert
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 544

Book Description
Thin-film compound semiconductor photovoltaic solar cells have demonstrated efficiencies of nearly 20% and are leading candidates to provide lower-cost energy due to potential advantages in manufacturing and materials costs. To fulfill the promise, a number of technical issues are being addressed, including a lack of fundamental understanding of these unique materials, devices and processes for large-area deposition. This book focuses on advances in the materials science, chemistry, processing and device issues of thin-film compound semiconductor materials that are used, or have potential use, in photovoltaic solar cells and related applications. Topics include: growth and performance of compound thin-film solar cells; novel materials and processes; defects and impurities; industrial perspectives; contacts and interfaces; grain boundaries and inhomogeneities; and structural, optical and electronic characterization.

Nanoparticulate Materials: Volume 704

Nanoparticulate Materials: Volume 704 PDF Author: R. K. Singh
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 416

Book Description
Fifty-seven papers examine the synthesis, characterization, and processing of nanoparticulate materials. Selected from the talks and posters given at the November symposium organized by the Materials Research Society, the papers look at applications in the areas of optics, magnetics, electronics, advanced energy storage, nano- dispersions, and biology. Major topics include methods for production of controlled size and shape of nanoparticles, ability to process nanoparticles to form uniform dispersions, directed assembly of nanoparticles at specific locations, large scale production, and surface control of nanoparticle materials for tailoring of specific properties. Annotation copyrighted by Book News, Inc., Portland, OR