Simulation Study of Metal Film on Emission Efficiency of LED Device － Using Electromagnet - Device Coupling Method

• Main Authors: Zhao-wei Chen, 陳昭瑋
• Other Authors: Yung-Chiang Lan
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/14947793482043668147

碩士 === 國立成功大學 === 光電科學與工程研究所 === 95 === In this essay, we get the metal periods that can excite Surface Plasmon Polariton(SPP) by SPP theory, then we use that to design the metal films on the light emitting diodes. By changing the size of periods、the thickness of metal films、the distance between the metal films and the quantum well of LED, the effect between the SPP and LED extraction efficiency could be observed. First, we could observe that the strongest resonance would happen at the periods that match the SPP theory on many different cases. Second, we observed the thicker metal films have lower extraction efficiency, this is due to the loss in the metals. Finally, when we reduce the distance between the metal films and the quantum well of LED, the quantum well spontaneous emission power would not change. This is because of the limitation of the simulation software, expecting this problem could be resolved in the future.