【摘 要】
：
During the past decade,Nitride Semiconductors LED got a significant development.It has been widely used as the backlight of the liquid crystal display,or ev
论文部分内容阅读
During the past decade,Nitride Semiconductors LED got a significant development.It has been widely used as the backlight of the liquid crystal display,or even the solid-state lighting devices to replace conventional incandescent and fluorescent lamps,which requires a higher crystal quality of the LED wafer.However,due to the heteroepitaxy of the GaN materials on sapphire substrate,the plane sapphire substrate can not satisfy the development requires of the GaN LEDs.
其他文献
信贷萎缩现象可以用货币供应量的增长率以及贷款占存款的比重两个指标来说明。 我国的货币供应量的增长率和经济增长率一样,从1993年开始逐年下降,从1993年的37.3％下降到1998
LED 路燈模組化設計,一直受限於諸多條件,從散熱器材料,散熱技術,熱對流2 等等。傳統LED 路燈模組所採用之散熱方法,多為壓鑄鋁與鋁型材兩種方法。一個120W 的LED 燈頭重
High-density class LED technology is the most recent industry leading innovation to bring immediate performance improvement for both discrete high power LED
The performance of LEDs depends on different parameters such as electrical efficiency,internal quantum efficiency and package extraction efficiency.All of t
The degradation behaviors of GaN-based LEDs encapsulated with different phosphors were studied.The results of the aging experiments show that the yellow pho
Growth of GaN on Si substrate is a popular topic due to its good thermal conductivity,low cost,easy to obtain large size.However,it is still difficult to ac
[摘 要]高职院校的会计教育旨在培养应用型和技术型的职业会计人才。随着社会形势的变化和全球经济的发展，对高职教育提出了新的要求，需要高职教育能够为企业培养和提供更多的技术创新型人才。在我国高职教育会计教学中要解决目前面临的一些问题，需要改革会计教学模式，更进一步地推进课程体系建设，完善教学内容，培养适应经济社会发展要求的会计人才。本文对高职院校的会计教学模式进行了初步的探讨与分析。 [关键词]高
根据《安阳市计划生育药具市场清查方案》通知,为加强计划生育药具市场管理,近日,由高新区卫计委、各办事处计生办、社区、卫监所负责人组成联合检查组,对辖区内大小药店、保
美国前国务卿、鲍威尔先生在《我的美国之路》里这样描述他们购买的第一套房子:对于花钱买房子,我们并不惧怕什么,问题只是选择什么样的房子好。在海外服役期间,我们已设法积
由于工作和家庭的用餐时间安排不同,我们每天可能会在不同的时间用餐,无法保持规律的用餐时间.有专家指出,这并不利于健康.rn据研究发现,每天在差不多同一时间吃早餐、午餐和