HgCdTe room temperature optically immersed photovoltaic infrared detectorPVI-4-1x1-TO39-NW-36
PVI-4-1x1-TO39-NW-36 is an uncooled photovoltaic IR detector based on HgCdTe heterostructure for optimal performance and stability, optically immersed to enhance the parameters. Its specific wavelength (λspec) is 4.0 µm and its optical area (Ao) is 1 mm × 1 mm. The cut‑on wavelength (λcut-on) can be optimized upon request. Applying a reverse bias (Vb) may significantly increase response speed and dynamic range. While this improves performance at high frequencies, be aware that the 1/f noise appearing in biased detectors may reduce performance at low frequencies. The detector is available in the TO39 package without a window.
Features
Spectral range: 2.3 to 4.4 µm
Back-side illuminated
Room temperature operation
Unique immersion lens technology applied
No bias required
No 1/f noise
No minimum order quantity required
Applications
Gas detection, monitoring and analysis: CH4, C2H2, CH2O, HCl, NH3, SO2, C2H6, CO2
Breath analysis: C2H6, CH2O, NH3
Explosion prevention
Exhaust gas denitrification
Emission control (exhaust fumes, greenhouse gases)
Contactless temperature measurements (metal industry)
Detector configuration
Detector symbol
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PVI-4-1x1-TO39-NW-36 |
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Detector type
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photovoltaic |
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Active element material | epitaxial HgCdTe heterostructure | |
Cooling | no | |
Temperature sensor | n/a | |
Optical area, Ao | 1 mm × 1 mm | |
Optical immersion | hyperhemisphere | |
Package | TO39 (3 pin) | |
Acceptance angle, Φ | ~36 deg. | |
Window | no |
Specification
(Tamb = Tchip = 293 K, Vb = 0 V)
Parameter | Value |
Unit | |||
Min. | Typ. | Max. | - | ||
Cut-on wavelength, λcut-on (10%) | - | 2.3 | - | μm | |
Peak wavelength, λpeak | - | 3.5±0.1 | - | μm | |
Specific wavelength, λspec | - | 4.0 | - | μm | |
Cut-off wavelength, λcut-off (10%) | - | 4.4 | - | μm | |
Detectivity, D* (λpeak, 20 kHz) | - | 6.0×1010 | - | cm⋅Hz1/2/W | |
Detectivity, D* (λspec, 20 kHz) | 3.0×1010 | 4.0×1010 | - | cm⋅Hz1/2/W | |
Current responsivity, Ri (λpeak) | - | 1.8 | - | A/W | |
Current responsivity, Ri (λspec) | 1.0 | 1.3 | - | A/W | |
Time constant, τ | - | 150 | - | ns | |
Dynamic resistance, Rd | 0.8 | 2 | - | kΩ |
Spectral response
(Typ., Tamb = Tchip = 293 K)
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Application notes