Engineering polariton non-linearity in organic and hybrid-semiconductor microcavities

有机和混合半导体微腔中的工程极化子非线性

基本信息

批准号：
EP/G062404/1
负责人：
David George Lidzey
金额：
$ 39.51万
依托单位：
University of Sheffield
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2010
资助国家：
英国
起止时间：
2010 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FG062404%2F1
关键词：
Engineering polariton non linearity organic

项目摘要

Strongly-coupled microcavities are a fascinating system for the exploration of the fundamental physics of the interactions between light and matter. Under such circumstances, the emissive states in such microcavities are termed 'polaritons', and can be described as an admixture between an exciton and a confined cavity photon. The optical properties of polaritons can be very different from their constituent parts (excitons and cavity photons), and thus there is a significant opportunity to explore new fundamental processes, and develop new types of devices that may find applications as low-threshold lasers, optical-amplifiers and high-speed optical switches. At present, the majority of work done on the strong-coupling regime in microcavities has centred on structures that contain inorganic semiconductors (either III-V, II-VI or GaN based materials). We have however pioneered the study of strong-coupled microcavities containing organic (carbon-based) semiconductors, which are anticipated permit new effects to be engineered. Despite the importance of organic-semiconductors in a range of optoelectronic devices (LEDs, photovoltaics, FETs, lasers etc) relatively little is understood regarding the microscopic processes that occur in strongly-coupled organic microcavities.Development of a basic understanding of non-linear processes and properties of organic-semiconductors in strongly-coupled microcavities will thus be a key area that we will address in this project. Key components of the research include studies the interactions between organic-polaritons and vibrational modes of the molecular semiconductor and the generation of organic exciton-polaritons at high density following electrical injection of carriers. We will also explore the fabrication and optical properties of 'hybrid-semiconductor' microcavities and devices (containing organic and inorganic semiconductors), and will study optically-driven energy-transfer between the different types of excitation using both linear and ultra-fast measurements. We are confident that our work will provide new fundamental insights into the optical properties of organic-polaritons (including relaxation and condensation), the transfer of excitations between different semiconductor materials via a cavity photon over large distances (> 100 nm) and the generation of new electrically-driven polariton devices. We believe that we are in an excellent position to undertake such an ambitious programme of research due to our world-leading expertise in strongly coupled organic semiconductor microcavities (Sheffield), and two-colour ultra-fast spectroscopy of microcavities (Southampton).

强耦合微腔是探索光与物质相互作用的基础物理的一个令人着迷的系统。在这种情况下，这种微腔中的发射态被称为“极化子”，并且可以被描述为激子和受限腔光子之间的混合。极化激元的光学特性可能与其组成部分（激子和腔光子）有很大不同，因此有一个重要的机会来探索新的基本过程，并开发新型设备，这些设备可能会在低阈值激光器、光学器件等方面得到应用。 -放大器和高速光开关。目前，关于微腔强耦合机制的大部分工作都集中在包含无机半导体（III-V、II-VI 或 GaN 基材料）的结构上。然而，我们开创了对包含有机（碳基）半导体的强耦合微腔的研究，预计这将允许设计出新的效应。尽管有机半导体在一系列光电器件（LED、光伏、FET、激光器等）中发挥着重要作用，但人们对强耦合有机微腔中发生的微观过程的了解相对较少。对非线性过程的基本了解的发展因此，强耦合微腔中有机半导体的特性将成为我们在该项目中讨论的关键领域。该研究的关键组成部分包括研究有机极化子与分子半导体振动模式之间的相互作用，以及载流子电注入后高密度有机激子极化子的产生。我们还将探索“混合半导体”微腔和器件（包含有机和无机半导体）的制造和光学特性，并将使用线性和超快测量研究不同类型激发之间的光驱动能量转移。我们相信，我们的工作将为有机极化子的光学性质（包括弛豫和凝聚）、通过长距离（> 100 nm）的腔光子在不同半导体材料之间的激发转移以及产生新型电驱动极化子器件。我们相信，由于我们在强耦合有机半导体微腔（谢菲尔德）和微腔双色超快光谱（南安普顿）方面拥有世界领先的专业知识，我们处于开展如此雄心勃勃的研究计划的绝佳位置。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Morphology Development in Amorphous Polymer:Fullerene Photovoltaic Blend Films During Solution Casting

非晶态聚合物的形态发展：溶液流延过程中富勒烯光伏共混薄膜

DOI：
10.1002/adfm.201301922
发表时间：
2014-02-01
期刊：
Advanced Functional Materials
影响因子：
19
作者：
Andrew J Pearson;Tao Wang;A. Dunbar;Hunan Yi;Darren C. Watters;D. Coles;P. Staniec;A. Iraqi;Richard A. L. Jones;David G Lidzey
通讯作者：
David G Lidzey

Direct evidence of Rabi oscillations and antiresonance in a strongly coupled organic microcavity

强耦合有机微腔中拉比振荡和反共振的直接证据

DOI：
10.1103/physrevb.91.201305
发表时间：
2015-05-28
期刊：
Physical Review B
影响因子：
3.7
作者：
S. K. Rajendran;Wei Wang;D. Brida;A. D. Sio;Ephraim Sommer;R. Vogelgesang;D. Coles;David G Lidzey;G. Cerullo;C. Lienau;T. Virgili
通讯作者：
T. Virgili

Characterizing the Electroluminescence Emission from a Strongly Coupled Organic Semiconductor Microcavity LED

表征强耦合有机半导体微腔 LED 的电致发光发射

DOI：
10.1002/adom.201300017
发表时间：
2013-07-01
期刊：
Advanced Optical Materials
影响因子：
9
作者：
Nikolaos Christogiannis;N. Somaschi;P. Michetti;D. Coles;P. Savvidis;P. Lagoudakis;David G Lidzey
通讯作者：
David G Lidzey

Temperature dependence of the upper-branch polariton population in an organic semiconductor microcavity

有机半导体微腔中上分支极化子群的温度依赖性