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Development of light-sensing organic transistors for optoelectronic and image sensor array applications

开发用于光电和图像传感器阵列应用的光敏有机晶体管

基本信息

批准号：
EP/F023200/1
负责人：
Thomas Anthopoulos
金额：
$ 59.09万
依托单位：
Imperial College London
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2008
资助国家：
英国
起止时间：
2008 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FF023200%2F1
关键词：
Development light sensing organic transistors

项目摘要

Traditionally, organic field-effect transistors (OFETs) have been explored as electronic switches in organic integrated circuits and active-matrix flexible displays. Recently, however, OFETs with additional functionalities, i.e. bi-functional OFETs, have also made their debut with most notable examples the light-emitting (LE-OFETs) and light-sensing (LS-OFETs) transistors. It is the aim of this project to design, develop and study bifunctional OFETs for use in various optoelectronic applications. In particular, we aim to demonstrate LS-OFETs with high photoresponsivity and fast switching characteristics for use, primarily, in integrated photodetectors, electro-optical circuits and full-colour/monochromatic image sensor arrays. Our approach is based on the use of suitable ambipolar OFETs and the measurable photoinduced current present upon illumination of the device with light. The significant concentration of free carriers, generated upon photoexcitation, can modulate the current flow across the channel and hence transform the transistor to an electro-optical switch. Use of ambipolar LS-OFETs has the potential to maximise the photoresponse of the devices while incorporation of appropriate semiconductor systems is expected to lead to demonstration of LS-OFETs with a wavelength selective characteristics. Such devices could one day be exploited in low-cost, large-area and flexible image sensor array applications. Furthermore, demonstration of high-performance LS-OFETs will also pave the way towards electro-optical circuits, in which signal processing involves the use of both optical and electrical signals. To date these ideas have not been given any significant consideration and are therefore waiting to be exploited. If succeed the proposed work has the potential to reshape the landscape of traditional organic electronics.

传统上，有机场效应晶体管（OFFET）已被探索作为有机集成电路和有源矩阵柔性显示器中的电子开关。然而，最近，具有附加功能的OFFERS，即双功能OFFERS，也已经首次亮相，其中最值得注意的例子是发光（LE-OFFERS）和光传感（LS-OFFERS）晶体管。本项目的目的是设计、开发和研究用于各种光电应用的双功能OFFERS。特别是，我们的目标是证明LS-OFFERS具有高的光响应性和快速开关特性，主要用于集成光电探测器，电光电路和全色/单色图像传感器阵列。我们的方法是基于使用合适的双极OFFERS和可测量的光致电流的设备与光照射后存在。在光激发时产生的自由载流子的显著浓度可以调制跨沟道的电流，从而将晶体管转变为电光开关。使用双极性LS-OFFE 2具有使器件的光响应最大化的潜力，而结合适当的半导体系统预期将导致LS-OFFE 2具有波长选择性特性的证明。这样的设备有一天可以在低成本，大面积和灵活的图像传感器阵列应用中开发。此外，高性能LS-OFFEST的演示也将为光电电路铺平道路，其中信号处理涉及使用光和电信号。到目前为止，这些想法尚未得到任何重要的考虑，因此有待于加以利用。如果成功，这项工作有可能重塑传统有机电子产品的格局。