Electrothermal feedback in Organic Devices (EFOD)

有机器件中的电热反馈 (EFOD)

• 批准号: 319059955
• 负责人: Professor Dr. Sebastian Reineke
• 金额: --
• 依托单位: Institut für Angewandte Physik (IAP)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/319059955?language=en
• 关键词: Electrothermal; feedback; Organic; Devices; EFOD

Organic semiconductors typically have low charge carrier mobility, supporting only limited current densities. Still, organic devices easily reach the level of Joule self-heating, simply because they have large area and thin layer thicknesses; the latter in the nanometer range. In contrast to standard inorganic semiconductors like silicon or gallium arsenide, they show a strong positive feedback between the power dissipation and the electrical conductivity, leading to nonlinear effects like thermal switching or negative differential resistance (NDR) happening already at fairly low positive temperature increments. This project aims to demonstrate and investigate such nonlinear self-heating effects in two functional device types: organic light-emitting diodes (OLEDs) and organic transistors (OTs). Key objective is a fundamental understanding of these nonlinear processes in organic devices, essential for future device and circuit design. Within this project, based on the fundamental insights gained, new strategies will be developed to circumvent limitations induced by Joule self-heating. In addition, the effect of electrothermal feedback will be explored to develop future functions and applications in organic devices.

有机半导体通常具有低电荷载流子迁移率，仅支持有限的电流密度。尽管如此，有机器件很容易达到焦耳自加热的水平，仅仅是因为它们具有大面积和薄层厚度;后者在纳米范围内。与硅或砷化镓等标准无机半导体相比，它们在功率耗散和电导率之间表现出强烈的正反馈，导致非线性效应，如热开关或负微分电阻（NDR），这些非线性效应已经在相当低的正温度增量下发生。本计画的目的是在有机发光二极体（OLED）与有机电晶体（OTs）两种功能元件中，验证与研究此种非线性自热效应。主要目标是对有机器件中的这些非线性过程有一个基本的了解，这对未来的器件和电路设计至关重要。在该项目中，基于所获得的基本见解，将开发新的策略来规避焦耳自热引起的限制。此外，还将探索反馈效应，以开发有机器件的未来功能和应用。

项目成果

Novel organic light-emitting diode design for future lasing applications

• DOI: 10.1016/j.orgel.2017.05.048
• 发表时间: 2017-09
• 期刊: Organic Electronics
• 影响因子: 3.2
• 作者: I. Slowik;A. Fischer;H. Fröb;Simone Lenk;S. Reineke;K. Leo

Electrothermal Feedback and Absorption-Induced Open-Circuit-Voltage Turnover in Solar Cells

太阳能电池中的电热反馈和吸收引起的开路电压转换

• DOI: 10.1103/physrevapplied.9.051003
• 发表时间: 2018
• 期刊: Physical Review Applied
• 影响因子: 4.6
• 作者: S. Ullbrich;A. Fischer;Z. Tang;J. Ávila;H.J. Bolink;S. Reineke;K. Vandewal
• 通讯作者: K. Vandewal

Nonlinear Contact Effects in Staggered Thin-Film Transistors

• DOI: 10.1103/physrevapplied.8.054012
• 发表时间: 2017-11-07
• 期刊: PHYSICAL REVIEW APPLIED
• 影响因子: 4.6
• 作者: Fischer, Axel;Zuendorf, Hilke;Klauk, Hagen
• 通讯作者: Klauk, Hagen

Investigating Free Charge‐Carrier Recombination in Organic LEDs Using Open‐Circuit Conditions

• DOI: 10.1002/adom.201801426
• 发表时间: 2019-01
• 期刊: Advanced Optical Materials
• 影响因子: 9
• 作者: Jinhan Wu;A. Fischer;S. Reineke

3D electrothermal simulations of organic LEDs showing negative differential resistance

显示负微分电阻的有机 LED 3D 电热模拟

• DOI: 10.1007/s11082-017-1167-4
• 发表时间: 2017
• 期刊: Optical and Quantum Electronics
• 影响因子: 3
• 作者: M. Liero;J. Fuhrmann;A. Glitzky;T. Koprucki;A. Fischer;S. Reineke
• 通讯作者: S. Reineke