Tilte：Printed Electronics

 – How to make a transistor using liquid materials

 

Speaker：Professor Daping Chu 

Centre for Advanced Photonics and Electronics, University of Cambridge, UK

 

Venue: Room 615, No.2 of Integrated Lab. Building(Near Instrumental Analysis Center)

 

Time: 13:30, April 10,2012 (Tuesday)

 

 

Invited by:  Prof. Guo Xiaojun 

 

                                  Abstract

In the past 100 years of electronics industry, there have been several technology revolutions in the first 50 years, namely the vacuum tube triode in 1906, solid state transistor in 1947 and integrated circuit in 1956.  Since then, the industry has been mainly following the prediction of Moore’s law until now.  Currently it faces not only the challenge of approaching the device’s physical limit, but also the difficulties of financial, practical and environmental limitations.

In recent years, the request for large scale and flexible displays, low cost IC on arbitrary substrates and disposable/recyclable electronics gradually arises.  The need for developing a new industry for this purpose based on sustainability, an industry of “Printed electronics”, comes to horizon.  This is not simply a change of fabrication process or materials and substrates in use, but a significant advance in how modern electronic devices can be constructed and what we can do to manufacture them in a low cost and eco-friendly manner.

This talk will try to demonstrate a full cycle from initial research to production.  Inkjet printing is to be introduced as a tool for the direct, digital printing of patterns of functional materials. Physical properties are used to improve the deposition resolution to meet the requirement of fabricating real devices.  In this way, the traditional fabrication approach can be revolutionised, from subtractive top-down to additive bottom-up, with on-demand deposition and low-cost setups.  The usage of material and energy as well as the waste and emission will be kept at minimum. Subsequently the examples of some of the initial research works at laboratory level will be used to illustrate the fabrication of different types of electronic devices using various materials. It will be followed by the further development of some of these works to the level of industrial production.

                                                              Biography

Professor Daping Chu is the Chairman of CAPE (Centre for Advanced Photonics and Electronics) and Head of Photonics and Sensors Group in the Cambridge University Engineering Department.  He was the Executive Researcher at the Cambridge Research Laboratory of Epson until 2007, where he was responsible for the development of non-volatile ferroelectric random access memories (FRAMs) and the inkjet technology for electronics and display fabrications.  His research activity has been in the areas of semiconductor devices and materials, nanostructures and properties, non-volatile memory devices, novel display technologies, organic electronics and inkjet fabrication process. Current research interests include contemporary electronics and photonics for the built environment, 3D phase-only holography for future displays and illuminations as well as optical communications, high brightness transreflective displays, laminated electro-active foils, flexible/printable electronics, and the development of manufacturing processes.