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This book explores the applications of ferroelectric materials in information technology by developing several prototype devices based on Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) single crystals. It describes how an optothermal field-effect transistor (FET) was constructed on the PMN-26PT single crystal, using a MoS2 monolayer as the channel semiconductor material. This fusion of pyroelectric effect and the interface engineering of 2D materials provides an effective strategy for the ‘photon revolution’ of FET. An ultra-broadband photodetector (UV ~ THz) was monolithically integrated into a [111]-oriented PMN-28PT single crystal by using silver nanowires in the transparent top electrode. The photodetector showed a dramatic improvement in operation frequency up to 3 kHz: an order of magnitude higher than that of traditional pyroelectric photodetectors. A self-powered integrated module was demonstrated through the combination of a triboelectric nanogenerator and a ferroelectric FET. The stored information can easily be written in the memory system using mechanical energy, solving the power consumption problem with regard to information writing in ferroelectric nonvolatile memories. This book extends the applications of ferroelectric single crystals into areas other than piezoelectric devices, paving the way for exciting future developments.

Inhaltsverzeichnis

Frontmatter

Chapter 1. Introduction

Abstract
Solid materials can be divided into conductors, semiconductors, and insulators according to the respective conductive properties.
Huajing Fang

Chapter 2. An Optothermal Field Effect Transistor Based on PMN-26PT Single Crystal

Abstract
At the end of the nineteenth century, Boolean discovered that logical thinking can be presented in mathematical expressions [1]. Later, John Atanasoff and Claude Shannon advocated the use of binary circuits to implement Boolean logic operations [2]. The transistor is the underlying component that implements the three basic logic gates AND, OR and NOT. It has been studied for about 90 years, dating back to 1925. At that time, German scientist Julius Lilienfeld had proposed to apply a strong electric field to control the charge carriers on the semiconductor surface [3], the idea of adjust the channel conductivity by electric field has been applied for a patent.
Huajing Fang

Chapter 3. An Ultrabroadband Photodetector Based on PMN-28PT Single Crystal

Abstract
A sensor is a key component of the information acquisition system. As an extension of the human sense organ, it can convert the outside information into useful information for humans according to different principles.
Huajing Fang

Chapter 4. A Mechanical Energy Writeable Ferroelectric Memory Based on PMN-35PT Single Crystal

Abstract
Information storage refers to the preservation of processed information in a certain format and order [1]. This is a prerequisite for ensuring that information can be used in case of need. Ferroelectric memory is a promising memory technology that is radiation resistant, fast access, and has low power consumption. It can storage data for long periods of time in open circuit [2–4].
Huajing Fang

Chapter 5. Conclusion and Outlook

Abstract
In this thesis, the PMN-PT ferroelectric single crystal is taken as the research object, and the new application of ferroelectric materials in the field of information technology is explored. Based on the excellent pyroelectric properties and ferroelectric properties of PMN-PT single crystals, several types of prototype devices have been developed with ingenious structural design.
Huajing Fang
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