Uncooled Infrared Photodetector Utilizing PbSe Nanocrystals
| Autor: | Ahmad I. Nusir, Justin J. Hill, Juan Aguilar, Haley Morris, M. Omar Manasreh |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Photocurrent
Photoluminescence Materials science Infrared business.industry Photoconductivity Photodetector 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Computer Science Applications chemistry.chemical_compound Optics chemistry Electrode Optoelectronics Electrical and Electronic Engineering 0210 nano-technology business Lead selenide Dark current |
| Zdroj: | IEEE Transactions on Nanotechnology. 15:109-112 |
| ISSN: | 1941-0085 1536-125X |
| Popis: | Lead selenide nanocrystals were coupled with the interdigital gold electrodes to create a dissimilar material that is used for detecting near-infrared light at room temperature. The photoluminescence spectrum of the nanocrystals showed a narrow peak at 1.6 μm. A device with 10-μm electrode spacing exhibits excellent photoresponse with an onset at 1.8 μm and detectivity in the order of 3 × 109 cmHz0.5/W at 5 V bias. The recovery time constant of the device was calculated from the time-resolved photocurrent curve and found to be 0.16 s. The photoresponse spectrum comprises of three distinct peaks in the near-infrared region creating a wavelength selectivity feature. |
| Databáze: | OpenAIRE |
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