Spatio-Temporal Patterns in Electroluminescent Devices

本研究主要研究电致发光半导体中电流细丝的时空分布。这是一个有趣而新颖的非线性动力学领域。这些图案将通过安装有ccd摄像机的冶金显微镜进行观察。图像采集卡将把CCD摄像机的输出数字化，并将图像数据加载到实验室的微型计算机中，以便随后进行数据分析。该系统将能够以比预期的丝状图案螺旋旋转速度快得多的速度记录图像。还将进行计算机模拟，以了解这些交流薄膜电致发光半导体器件的非线性异质结。加州大学伯克利分校理论物理研究所的这类工作有很强的理论支持。

This research is concerned with investigating the spatio-temporal patterns of current filaments in an electroluminescent semiconductor. This is an interesting and novel area of nonlinear dynamics. The patterns will be observed with a metallurgical microscope topped by a CCD camera. A frame-grabber will digitize the output of the CCD camera and load the image data into a laboratory micro-computer for subsequent data analysis. The system will be able to record images much faster than the expected spiral rotation rate of the filament patterns. Computer simulations will also be undertaken to understand the nonlinear hebahior of these ac thin film electroluminescent semiconductor devices. There is strong theoretical support for this type of work at the Institute for Theoretical Physics at UCSB.