Download or read book Defect Passivation in Hybrid Perovskite Solar Cells by Zwitterions written by Xiaopeng Zheng and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The ionic defects on the surfaces and at the grain boundaries of organic-inorganic halide perovskite films are detrimental to the efficiency and stability of perovskite solar cells. In chapter 3, we showed that the zwitterions can effectively passivate ionic defects in several different types of hybrid perovskites with negatively and positively charged components. The efficient defect passivation reduces the charge-trap density and extends the carrier recombination lifetime- supported by calculating the density function. The defect passivation reduces the open-circuit-voltage deficit of the p-i-n structured device to 0.39 V and boosts the efficiency to a certified value of 20.59±0.45%. Moreover, the defect healing also significantly enhances the stability of films in ambient conditions. Our findings provide an avenue for defect passivation to further improve the efficiency and stability of solar cells. The uniform and high-electronic-quality of perovskite thin films are essential for high-performance perovskite devices. Here, it was shown that the 3-[Dodecyl(dimethyl)ammonio]-1-propanesulfonate inner salt (DPSI), which is a zwitterionic lead (II)-coordination long chain molecule, plays dual roles in tuning the crystallization behavior and passivating defects of perovskites. The synergistic effect of crystallization control and defect passivation remarkably suppresses the pin-hole formation, reduces the charge trap density, and elongates the carrier recombination lifetime, boosting the planar perovskite device efficiency to 21.1%. Our findings provide an avenue for simultaneous crystallization control and defect passivation to further improve the performance of perovskite devices.
Download or read book Enhanced Charge Carrier Dynamics and Defects Passivation in Hybrid Perovskite Solar Cell Using a Novel Organic Halide Salt written by MD Ashiqur Rahman Laskar and published by . This book was released on 2020 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Defect Passivation and Doping Engineering for Highly Efficient Perovskite Solar Cells written by Meicheng Li and published by CRC Press. This book was released on 2025-01-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the fundamentals of trap defects as well as passivation and doping strategies in perovskite solar cells is helpful for improving device efficiency and stability. This book summarizes the strategies of defect passivation and material doping to clearly describe the underlying mechanisms for high-efficiency and stable PSCs.
Download or read book Perovskite Solar Cells written by Shahzada Ahmad and published by John Wiley & Sons. This book was released on 2022-03-14 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a thorough overview of perovskite research, written by leaders in the field of photovoltaics The use of perovskite-structured materials to produce high-efficiency solar cells is a subject of growing interest for academic researchers and industry professionals alike. Due to their excellent light absorption, longevity, and charge-carrier properties, perovskite solar cells show great promise as a low-cost, industry-scalable alternative to conventional photovoltaic cells. Perovskite Solar Cells: Materials, Processes, and Devices provides an up-to-date overview of the current state of perovskite solar cell research. Addressing the key areas in the rapidly growing field, this comprehensive volume covers novel materials, advanced theory, modelling and simulation, device physics, new processes, and the critical issue of solar cell stability. Contributions by an international panel of researchers highlight both the opportunities and challenges related to perovskite solar cells while offering detailed insights on topics such as the photon recycling processes, interfacial properties, and charge transfer principles of perovskite-based devices. Examines new compositions, hole and electron transport materials, lead-free materials, and 2D and 3D materials Covers interface modelling techniques, methods for modelling in two and three dimensions, and developments beyond Shockley-Queisser Theory Discusses new fabrication processes such as slot-die coating, roll processing, and vacuum sublimation Describes the device physics of perovskite solar cells, including recombination kinetics and optical absorption Explores innovative approaches to increase the light conversion efficiency of photovoltaic cells Perovskite Solar Cells: Materials, Processes, and Devices is essential reading for all those in the photovoltaic community, including materials scientists, surface physicists, surface chemists, solid state physicists, solid state chemists, and electrical engineers.
Download or read book Perovskite Photovoltaics and Optoelectronics written by Tsutomu Miyasaka and published by John Wiley & Sons. This book was released on 2022-03-21 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perovskite Photovoltaics and Optoelectronics Discover a one-of-a-kind treatment of perovskite photovoltaics In less than a decade, the photovoltaics of organic-inorganic halide perovskite materials has surpassed the efficiency of semiconductor compounds like CdTe and CIGS in solar cells. In Perovskite Photovoltaics and Optoelectronics: From Fundamentals to Advanced Applications, distinguished engineer Dr. Tsutomu Miyasaka delivers a comprehensive exploration of foundational and advanced topics regarding halide perovskites. It summarizes the latest information and discussion in the field, from fundamental theory and materials to critical device applications. With contributions by top scientists working in the perovskite community, the accomplished editor has compiled a resource of central importance for researchers working on perovskite related materials and devices. This edited volume includes coverage of new materials and their commercial and market potential in areas like perovskite solar cells, perovskite light-emitting diodes (LEDs), and perovskite-based photodetectors. It also includes: A thorough introduction to halide perovskite materials, their synthesis, and dimension control Comprehensive explorations of the photovoltaics of halide perovskites and their historical background Practical discussions of solid-state photophysics and carrier transfer mechanisms in halide perovskite semiconductors In-depth examinations of multi-cation anion-based high efficiency perovskite solar cells Perfect for materials scientists, crystallization physicists, surface chemists, and solid-state physicists, Perovskite Photovoltaics and Optoelectronics: From Fundamentals to Advanced Applications is also an indispensable resource for solid state chemists and device/electronics engineers.
Download or read book Grain Boundary Defect Passivation of Mixed Cation Perovskite Solar Cell to Improve Device Performance written by Sheikh Ifatur Rahman and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hybrid Perovskite Solar Cells written by Hiroyuki Fujiwara and published by John Wiley & Sons. This book was released on 2022-01-10 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unparalleled coverage of the most vibrant research field in photovoltaics! Hybrid perovskites, revolutionary game-changing semiconductor materials, have every favorable optoelectronic characteristic necessary for realizing high efficiency solar cells. The remarkable features of hybrid perovskite photovoltaics, such as superior material properties, easy material fabrication by solution-based processing, large-area device fabrication by an inkjet technology, and simple solar cell structures, have brought enormous attentions, leading to a rapid development of the solar cell technology at a pace never before seen in solar cell history. Hybrid Perovskite Solar Cells: Characteristics and Operation covers extensive topics of hybrid perovskite solar cells, providing easy-to-read descriptions for the fundamental characteristics of unique hybrid perovskite materials (Part I) as well as the principles and applications of hybrid perovskite solar cells (Part II). Both basic and advanced concepts of hybrid perovskite devices are treated thoroughly in this book; in particular, explanatory descriptions for general physical and chemical aspects of hybrid perovskite photovoltaics are included to provide fundamental understanding. This comprehensive book is highly suitable for graduate school students and researchers who are not familiar with hybrid perovskite materials and devices, allowing the accumulation of the accurate knowledge from the basic to the advanced levels.
Download or read book Hybrid Phosphor Materials written by Kanchan Upadhyay and published by Springer Nature. This book was released on 2022-01-12 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports the basics of hybrid phosphor materials, their synthesis routes and their special properties and characterization techniques. It gives the reader information about the natural origins and development of hybrid materials, which are developed by combining inorganic and organic species in one material interface-determined materials. The book provides a general classification of hybrid materials, wherein inorganic materials modified by organic moieties are distinguished from organic materials or matrices modified by inorganic constituents. It gives a focus to the functionalization of organic materials by inorganic additives. The application areas covered include optoelectronic field, sensor applications, biological and environmental applications.
Download or read book Printable Mesoscopic Perovskite Solar Cells written by Hongwei Han and published by John Wiley & Sons. This book was released on 2023-06-07 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Printable Mesoscopic Perovskite Solar Cells A comprehensive exploration of printable perovskite solar cells and their potential for commercialization In Printable Mesoscopic Perovskite Solar Cells, a team of distinguished researchers delivers an accessible and incisive discussion of the principles, technologies, and fabrication processes associated with the manufacture and use of perovskite solar cells. The authors detail the properties, characterization methods, and technologies for halide perovskite materials and devices and explain printable processing technologies, mesoscopic anode and cathodes, and spacer layers for printable perovskite solar cells. In the book, you’ll find expansive discussions of the stability issues inherent in perovskite solar cells and explore the potential for scaling and commercializing the printing of perovskite solar cells, complete with real-world industry data. Readers will also find: A thorough introduction to the background and fundamentals of perovskite solar cells Comprehensive explorations of the characterization methods and technologies used with halide perovskite materials and devices Practical discussions of printable processing technologies for perovskite solar cells Fulsome treatments of the stability issues associated with perovskite solar cells and potential solutions for them Perfect for materials scientists, solid state physicists and chemists, and electronics engineers, Printable Mesoscopic Perovskite Solar Cells will also benefit surface chemists and physicists.
Download or read book Defect Passivation Towards Highly Efficient and Stable Metal Halide Perovskite Solar Cells written by Rui Wang and published by . This book was released on 2020 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal halide perovskite material had emerged as a rising star in the photovoltaic application due to its excellent optoelectronic properties. Perovskite solar cells with a power conversion efficiency of over 25% have been demonstrated within a few years. However, the stability issues of this material still prohibit the commercialization of perovskite solar cells because of the low ion-migration activation energy, phase instability at room temperature, and sensitivity to the external environments. Attacked by the external environments through the defects in the perovskite has been considered one of the most critical issues of the instability of perovskite solar cells. Since the defects are preferred formed at the surface and grain boundaries of the perovskite, developing facile and effective strategies to passivate the defects at surface and grain boundaries is essential to enhance the stability and efficiency of perovskite solar cells. In Chapter two, 1,3,7-Trimethylxanthine, a commodity chemical with two conjugated carboxyl groups better known by its common name caffeine, improves the performance and thermal stability of perovskite solar cells based on both MAPbI3 and CsFAMAPbI3 active layers. The strong interaction between caffeine and Pb2+ ions serves as a "molecular lock" that increases the activation energy during film crystallization, delivering a perovskite film with a preferred orientation, improved electronic properties, reduced ion migration, and greatly enhanced thermal stability. A champion stabilized efficiency of 19.8% and retain over 85% of their efficiency under continuous annealing at 85 C in nitrogen. Later on, in Chapter three, CuBr2 was introduced into the all-inorganic perovskites to control the crystallization and passivate the grain boundary defects, therefore a power conversion efficiency of over 16% was realized. Apart from grain passivation by modulating the crystallization process of perovskites, a facile surface-induced secondary grain growth by utilizing the surface anisotropic was developed to enlarge the grain size to reduce the grain boundaries. As a result, grain size as large as 4 microns was realized through the oleylammonium treatment, the power conversion efficiency of 16.58% was achieved with 4,000-hour shelf stability. In Chapter 5, the chemical environment of a functional group that is activated for defect passivation was systematically investigated with theophylline, caffeine and theobromine. When N-H and C=O were in an optimal configuration within the molecule, hydrogen-bond formation between N-H and I assisted the primary C=O binding with the antisite Pb defect to maximize surface-defect binding. A stabilized power conversion efficiency of 22.6% of photovoltaic device was demonstrated with theophylline treatment.
Download or read book Defect and Grain Boundary Engineering for Enhanced Performances and Lifetimes of Hybrid Perovskite Solar Cells written by Nicholas Francis DeMarco and published by . This book was released on 2019 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the world energy consumption increases, the necessity for clean energy proves vital and urgent as catastrophic effects of global climate change are imminent. The sun delivers more energy to Earth in just over an hour than we have consumed over the course of last year, making solar technology a most promising candidate for a sustainable future. Currently, state-of-the-art silicon-based solar technologies dominate the market owed to their maturity in processing knowledge, performance reliability, and lifetime. Despite lower costs in recent years, the levelized cost of electricity of silicon-based solar PV technologies is still much greater than conventional fossil fuel sources, providing large incentive to find more cost-effective alternative solar PV technologies. Solution-processed solar technologies are appealing as a low-cost alternative, among which, hybrid perovskites have recently risen as a high performance solution-processed PV technology achieving laboratory scale efficiencies >23%, which are rapidly approaching those of conventional Si-based PV (~26%). However, owed to the solution-processed nature of perovskites, there are many associated defects and grain boundary regions that can adversely affect performances and lifetimes. In this dissertation, I will focus on addressing defect and grain boundary engineering, taking advantage of the wet chemical environment of perovskite thin film processing to manipulate crystallization dynamics and modulate defect and grain boundary properties. In Chapter 4, the guanidinium molecule was first discovered for use in hybrid perovskites. It was found that inclusion of guanidinium can provide extraordinary enhancements in photoluminescent properties of the thin film and enhanced open-circuit voltage of the devices. Based on further experimental analyses and results, we believe that the guanidinium ion serves to suppress formation of defects via lattice strain relaxation and also may serve as a passivant at grain boundaries, giving rise to these impressive improvements. This work opened the door to future works throughout my Ph.D. to control crystallization and defect properties. To further investigate the nature of controlling crystal growth and associated defect natures, a Lewis acid-base adduct approach was developed and is discussed in Chapter 5. The strength of interactios between the Lewis acid perovskite precursors and Lewis base additives were shown to greatly influence nucleation and growth dynamics. The Lewis base urea was found to provide great enhancement in crystal growth, producing larger sized grains and enhanced photoluminescent properties, alongside a greater performance and stability of the device. Lastly, in Chapter 6, the intrinsic stability of the perovskite thin film is addressed by utilizing the compositional and dimensional tenability of hybrid perovskite materials, utilizing a hybrid 3- and 2-dimensionality of the perovskite structure to lead to even further enhanced performances and long-term lifetimes. It was found that the 2-D perovskite forms around grains (at grain boundaries) to facilitate the production of high quality 3-D grains and serve as passivating layers to grain boundaries. These works provide important future directions for hybrid perovskite PV research to realize commercial technologies with competitive efficiencies, long lifetimes, and low costs. Conclusions and future outlooks of these works are discussed in Chapter 7.
Download or read book Third Generation Solar Cells written by Agata Zdyb and published by Taylor & Francis. This book was released on 2023-01-20 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the principle of operation, materials used and possible applications of third generation solar cells that are under investigation and have been not commercialized on a large scale yet. The third generation photovoltaic devices include promising emerging technologies such as: organic, dye sensitized, perovskite and quantum dot sensitized photocells. This book introduces the reader to the basics of third generation photovoltaics and presents in an accessible way phenomena and a diversity of materials used. In this book one will find the description of the working principle of new promising solar technologies, their advantages and disadvantages, prospect applications and preliminary analysis of their impact on the environment. The fundamentals of traditional solar cell operation are also included in the book facilitating understanding of new ideas. This book is ideal reading for everyone who is interested in novel solutions in photovoltaics as well as applications of nanotechnology, photochemistry and materials research.
Download or read book Solar Cells and Modules written by Arvind Shah and published by Springer Nature. This book was released on 2020-07-16 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a comprehensive introduction to the field of photovoltaic (PV) solar cells and modules. In thirteen chapters, it addresses a wide range of topics including the spectrum of light received by PV devices, the basic functioning of a solar cell, and the physical factors limiting the efficiency of solar cells. It places particular emphasis on crystalline silicon solar cells and modules, which constitute today more than 90 % of all modules sold worldwide. Describing in great detail both the manufacturing process and resulting module performance, the book also touches on the newest developments in this sector, such as Tunnel Oxide Passivated Contact (TOPCON) and heterojunction modules, while dedicating a major chapter to general questions of module design and fabrication. Overall, it presents the essential theoretical and practical concepts of PV solar cells and modules in an easy-to-understand manner and discusses current challenges facing the global research and development community.
Download or read book Stable and Efficient Organo Metal Halide Hybrid Perovskite Solar Cells Via Conjugated Lewis Base Polymer Induced Trap Passivation and Charge Extraction written by 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 Defect associated Physical Mechanism and Passivation Engineering for Perovskite Solar Cells written by Wei Meng and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Perovskite Quantum Dots written by Ye Zhou and published by Springer Nature. This book was released on 2020-08-27 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses perovskite quantum dots, discussing their unique properties, synthesis, and applications in nanoscale optoelectronic and photonic devices, as well as the challenges and possible solutions in the context of device design and the prospects for commercial applications. It particularly focuses on the luminescent properties, which differ from those of the corresponding quantum dots materials, such as multicolor emission, fluorescence narrowing, and tunable and switchable emissions from doped nanostructures. The book first describes the characterization and fabrication of perovskite quantum dots. It also provides detailed methods for analyzing the electrical and optical properties, and demonstrates promising applications of perovskite quantum dots. Furthermore, it presents a series of optoelectronic and photonic devices based on functional perovskite quantum dots, and explains the incorporation of perovskite quantum dots in semiconductor devices and their effect of the performance. It also explores the challenges related to optoelectronic devices, as well as possible strategies to promote their commercialization. As such, this book is a valuable resource for graduate students and researchers in the field of solid-state materials and electronics wanting to gain a better understanding of the characteristics of quantum dots, and the fundamental optoelectronic properties and operation mechanisms of the latest perovskite quantum dot-based devices.
Download or read book M moire de la reconstruction written by and published by . This book was released on 1988 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
