High sensitivity low dark current 10 μm GaAs quantum well infrared photodetectors
| Autor: | E. Pelve, C. G. Bethea, V. O. Shen, S. J. Hsieh, B. F. Levine, R. R. Abbott, G. Hasnain |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Physics
Physics and Astronomy (miscellaneous) business.industry Photodetector Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Cutoff frequency Optics Optoelectronics Black-body radiation Infrared detector Quantum well infrared photodetector business Quantum well Quantum tunnelling Dark current |
| Zdroj: | Applied Physics Letters. 56:851-853 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | By increasing the quantum well barrier width, we have dramatically reduced the tunneling dark current by an order of magnitude and thereby significantly increased the blackbody detectivity D*BB. For a GaAs quantum well infrared detector having a cutoff wavelength of λc=10.7 μm, we have achieved D*BB =1.0×1010 cm (Hz)1/2/W at T=68 K, a temperature which is readily achievable with a cryogenic cooler. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|