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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Wang, W. Lu, H.D. Guo, F.M. |
| Copyright Year | 2015 |
| Description | Author affiliation: Sch. of Inf. Sci. & Technol., East China Normal Univ., Shanghai, China (Wang, W.; Lu, H.D.; Guo, F.M.) |
| Abstract | We discuss the readout of a kind of novel 64-pixel quantum dots photodetector array which has high current gains but low dark currents and thus has high signal to noise ratio. Photocurrent spectrum tests demonstrated that the photodetector shows excellent light absorption from 600nm to 900nm both in room temperature (300K) and liquid nitrogen temperature. High gain-adaptive capacitive trans-impedance amplifier (CTIA) readout circuit has been designed to acquire photocurrents. Different integration capacitors were designed to suit for both weak and nature light. In weak light detection, there were 2mV voltage response in $10^{-13}W$ @300K and 4mV in $10^{-14}W$ @77K at 2pF integration capacitor. Their responsivities were $2×10^{10}V/W$ and $4×10^{11}V/W$ respectively. |
| Starting Page | 3073 |
| Ending Page | 3078 |
| File Size | 369868 |
| Page Count | 6 |
| File Format | |
| e-ISBN | 9781467391047 |
| DOI | 10.1109/ICInfA.2015.7279816 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-08-08 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | 300K and 77K quantum photodetector weak light detection Capacitors Noise Quantum dots Photodetectors Arrays Photoconductivity gain-adaptive readout circuit |
| Content Type | Text |
| Resource Type | Article |
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