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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Takamuro, D. Takao, H. Sawada, K. Ishida, M. |
| Copyright Year | 2005 |
| Description | Author affiliation: Dept. of Electr. & Electron. Eng., Toyohashi Univ. of Technol., Japan (Takamuro, D.; Takao, H.; Sawada, K.; Ishida, M.) |
| Abstract | We propose a new electron-emission-type infrared light sensor and imager, which uses the principle of electron emission from a ferroelectric material. Previously, we reported that the electron emission current was proportional to the incident infrared light energy and 30% of the pyroelectric current was emitted to the vacuum (Tomita, K. et al., Sensors and Actuators, vol.97-8, p.147-52, 2002). The electron-emission-type infrared sensor is improved by using a single crystalline LiNbO/sub 3/ and a secondary electron multiplying device. This type of sensor was proposed and demonstrated previously using Pb(Zr,Ti)O/sub 3/ (PZT). The response speed increased to 1.5 times that of PZT. On a pulsed infrared irradiation condition, this sensor achieved infrared light sensitivity of 41 nA/W without multiplication of the emission electrons. It is expected that electrons can be supplied to the surface from the comb-type electrode. The electron emission current was measured, and the peak current did not change during a continuous detection operation. In the low incident light condition, an emission pattern was confirmed by multiplication of emission electrons. This image was caused by the pyroelectric charge from LiNbO/sub 3/. |
| Sponsorship | Korean Sensors Soc |
| Starting Page | 581 |
| Ending Page | 584 |
| File Size | 657162 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780389948 |
| DOI | 10.1109/SENSOR.2005.1496484 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-06-05 |
| Publisher Place | South Korea |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Infrared sensors Crystallization Electron emission Infrared image sensors Pyroelectricity Ferroelectric materials Elementary particle vacuum Actuators Electrodes Current measurement |
| Content Type | Text |
| Resource Type | Article |
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