Dual-band quantum well infrared photodetectors with two ohmic contacts
文献类型：期刊论文
| 作者 | Huo Yong-Heng; Ma Wen-Quan; Zhang Yan-Hua; Huang Jian-Liang; Wei Yang; Cui Kai; Chen Liang-Hui |
| 刊名 | Acta physica sinica
 |
| 出版日期 | 2011-09-01 |
| 卷号 | 60期号:9页码:6 |
| 关键词 | Voltage tunability Simultaneous response Quantum well infrared photodetector Dual-band |
| ISSN号 | 1000-3290 |
| 通讯作者 | Ma wen-quan(wqma@semi.ac.cn) |
| 英文摘要 | Two-color quantum well infrared photodetectors (qwips) with two stacks of qw series have been grown by molecular beam epitaxy and processed into mesa structure devices with only two ohmic contacts by photolithography and wet chemical etching. by changing qwip parameters, including barrier height, well width, doping level and period number, the total bias voltage can be distributed to the two stacks in such a way that the stacked structure will show different photoresponse characteristics. the photocurrent spectrum measurements demonstrate that sample i can work alternately between the two atmospheric windows of 3-5 mu m and 8-12 mu m by tuning the voltage, while sample 2 can photorespond simultaneously to the irradiation of the two atmospheric windows. in this paper, the physics behind the two-contact type of qwip is discussed. the voltage tunability and the simultaneous photoresponse are attributed to the change of photoconductive gain with the bias voltage and the distribution of the total bias between the two series. we here focus the discussion on the voltage tunability of sample 1. compared with the three-contact-per-pixel structure, two-contact-per-pixel structure can greatly facilitate the dual-band focal plane array (fpa) device fabrication and increase the fpa fill factor. |
| WOS关键词 | FOCAL-PLANE ARRAYS ; SIMULTANEOUSLY WORKING ; MU-M ; DETECTOR |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000295114000111 |
| 出版者 | CHINESE PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2428337 |
| 专题 | 半导体研究所 |
| 通讯作者 | Ma Wen-Quan |
| 作者单位 | Chinese Acad Sci, Inst Semicond, Lab Nanooptoelect, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huo Yong-Heng,Ma Wen-Quan,Zhang Yan-Hua,et al. Dual-band quantum well infrared photodetectors with two ohmic contacts[J]. Acta physica sinica,2011,60(9):6. |
| APA | Huo Yong-Heng.,Ma Wen-Quan.,Zhang Yan-Hua.,Huang Jian-Liang.,Wei Yang.,...&Chen Liang-Hui.(2011).Dual-band quantum well infrared photodetectors with two ohmic contacts.Acta physica sinica,60(9),6. |
| MLA | Huo Yong-Heng,et al."Dual-band quantum well infrared photodetectors with two ohmic contacts".Acta physica sinica 60.9(2011):6. |
入库方式： iSwitch采集
来源：半导体研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。