机构

• 地理科学与资源研究所 [2]
• 长春光学精密机械与物... [1]
• 半导体研究所 [1]

采集方式

• OAI收割 [4]

内容类型

• SCI/SSCI论文 [2]
• 会议论文 [2]

发表日期

• 2008 [2]
• 2006 [1]
• 2005 [1]

学科主题

• 光电子学 [1]

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Characteristics of ZnMgO-based metal-semiconductor-metal photodetectors (EI CONFERENCE) 会议论文  OAI收割 International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Photoelectronic Imaging and Detection, September 9, 2007 - September 12, 2007, Beijing, China 作者:  Zhang J.;  Li B.;  Li B.;  Li B.;  Zhao Y. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 In recent years  ZnMgO semiconductor alloys  with a direct bandgap tunable between 3.37 eV and 7.8 eV  become one of the most suitable materials for the fabrication of ultraviolet detectors. In this paper  we have fabricated metal-semiconductor-metal photodetectors on 1-m thick Zn 0.8Mg0.2O films. The interdigital metal electrodes are 500 m long and 5 m wide with an interelectrode spacing 2 m  5 m and 10 m  respectively. Zn0.8Mg0.2O films were grown on quartz by ratio frequency magnetron sputtering at 500C. Dark current  spectral responsivity and pulse response were carried out for the devices with different finger pitches. All the photodetectors showed the peak responsivity at 330 nm and the ultraviolet-visible rejection ratio (R330 nm/R400 nm) is more than four orders of magnitude at 3 V bias. For the device with 2 m finger pitch  the detectivity was calculated as 4.21011 cm Hz 1/2/W at 330 nm. Furthermore  the transient response measurement for all devices revealed similar rise time of 10 ns. The 90%-10% fall times are 130 ns  170 ns and 230 ns for the devices with different finger pitches of 2 m  5 m and 10 m  respectively..   A comparison of three methods for determining vineyard evapotranspiration in the and desert regions of northwest China SCI/SSCI论文  OAI收割 2008 作者:  Zhang L.;  Zhang L. 收藏  |  浏览/下载：23/0  |  提交时间：2012/06/08 arid region  Bowen ratio-energy balance  eddy covariance  evapotranspiration  field water balance  northwest China  vineyard  energy-balance closure  latent-heat flux  frequency-response  corrections  bowen-ratio  eddy-covariance  deciduous forest  sensible  heat  water-vapor  measurement systems  net-radiation   Recent progress and future directions of ChinaFLUX SCI/SSCI论文  OAI收割 2006 Yu G. R.; Fu Y. L.; Sun X. M.; Wen X. F.; Zhang L. M. 收藏  |  浏览/下载：21/0  |  提交时间：2012/06/08 eddy covariance  flux measurement  carbon budget  terrestrial ecosystem  FLUXNET  ChinaFLUX  carbon-dioxide exchange  water-vapor exchange  frequency-response  corrections  native tallgrass prairie  net ecosystem exchange  gap  filling strategies  pine mixed forest  long-term  eddy covariance  terrestrial ecosystem   High-speed photodetector characterization using tunable laser by optical heterodyne technique - art. no. 60200A 会议论文  OAI收割 conference on optoelectronic materials and devices for optical communications, shanghai, peoples r china, nov 07-10, 2005 San, HS; Wen, JM; Xie, L; Zhu, NH; Feng, BX 收藏  |  浏览/下载：88/16  |  提交时间：2010/03/29 optical heterodyne technique  ultra-wideband frequency response  different frequency photodetector  FREQUENCY-RESPONSE MEASUREMENT  MULTIMODE WAVE-GUIDE