標題: | Influence of oxynitride (SiOxNy) passivation on the microwave performance of AlGaN/GaN HEMTs |
作者: | Desmaris, V. Shiu, J. Y. Rorsman, N. Zirath, H. Chang, E. Y. 材料科學與工程學系 Department of Materials Science and Engineering |
關鍵字: | AlGaN/GaN HEMTs;microwave FETs;passivation;transient analysis |
公開日期: | 1-五月-2008 |
摘要: | The effects of the composition of oxynitride passivations (SiOxNy) deposited by plasma enhanced chemical-vapor deposition (PECVD) at room temperature on the microwave performance of AlGaN/GaN high electron mobility transistors (HEMTs) were investigated. Five different SiOxNy passivating layers were deposited covering the whole range of dielectrics combinations from SiOx to SiNy. Their impacts on the HEMT performance were studied by means of DC, S-parameters, pulsed IV and load-pull measurements. The oxynitride dielectric with a refraction index of 1.58 was shown to be an effective SiOxNy passivation for limiting the gate-lag effects in the HEMTs and at the same time increasing the breakdown voltage of the device. It is thus a promising passivation layer for microwave power high voltage and high power applications. (c) 2007 Elsevier Ltd. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.sse.2007.10.022 http://hdl.handle.net/11536/9376 |
ISSN: | 0038-1101 |
DOI: | 10.1016/j.sse.2007.10.022 |
期刊: | SOLID-STATE ELECTRONICS |
Volume: | 52 |
Issue: | 5 |
起始頁: | 632 |
結束頁: | 636 |
顯示於類別: | 期刊論文 |