Mid-infrared (3-5 μm) LEDs as sources for gas and liquid sensors

B. Matveev (Corresponding Author), G. Gavrilov, V. Evstropov, N. Zotova, Sergei Arcadievich Karandashov, Yu Sotnikova, Nikolai Matveevich Stus, Georgii Nikolaevich Talalakin, Jouko Malinen

    Research output: Contribution to journalArticleScientificpeer-review

    41 Citations (Scopus)


    Mid-infrared LEDs based on InGaAs, InAsSb(P) and InGaAsSb alloys with an emission band of 0.3–0.5 μm, output power in the 10–50 μW range and long-term operation up to 20 000 h have been fabricated and tested. The LED-based analyser prototypes with PbSe photoresistors as detecting elements have been made and characterized with respect to CO, CO2 and H2O detection. A first attempt to make a qualitative analysis of hydrocarbons at 3.3 μm using transmission spectra recorded by an LED array spectrometer module has been undertaken.

    Original languageEnglish
    Pages (from-to)339 - 343
    Number of pages5
    JournalSensors and Actuators B: Chemical
    Issue number1-3
    Publication statusPublished - 1997
    MoE publication typeA1 Journal article-refereed


    • Infrared LEDs
    • Optical sensors
    • Spectrometers


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