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Information × Registration Number 0221U106670, 0120U104805 , R & D reports Title Smoke sensor based on plasmon-polariton photodetector popup.stage_title Head Mamykin Sergij V., Registration Date 17-12-2021 Organization VE Lashkarev Institute of Semiconductor Physics of the National Academy of Sciences of Ukraine popup.description2  The object of study of this project is the excitation of surface plasmon-polariton waves on periodically profiled metal films of plasmon-carried metal (gold) which is both an interface with the test environment and part of the photosensitive structure (Schottky barrier, p-n junction) on the Si monocrystal wafer which leads to resonant enhancement of the photocurrent and its use for smoke particles detection. The subject of the study is the plasmon-polariton photodetectors (PPPD), formed on the basis of thin profiled metal films and photosensitive structure (Schottky barrier, p-n junction) on the Si monocrystal wafer. The aim of the work is to develop a prototype of an optical smoke sensor based on PPPD with a reduced probability of false positives from finely dispersed dust particles. Si-based PPPDs are made using interference photolithography technology with good optoelectrical and electrophysical characteristics. A method for recording of the resonance in PPPD has been developed, which uses both photocurrent resonance and reduction of the light reflection coefficient from the PPPD surface. The design of the sensor chamber is developed taking into account the peculiarities of PPPD application. An equipped smoke box for the sensitivity testing of smoke sensors of various types, including those based on PPPD, has been developed and manufactured. Tests were conducted using different sources of smoke: wood, cotton fabric and cigarettes. The investigations of the developed smoke detector based on PPPD sensor have shown that the smoke from all tested sources leads to a significant shift of the spectral (10 ÷27 nm) and angular (1 ÷ 5°) position of the plasmon-polariton resonance band and the associated photocurrent band towards greater wavelengths and larger angles, which are experimentally proven physical basis for the construction of smoke detectors based on the developed PPPD. Some tests were performed in conditions of high humidity (100%) and of high dust content. Product Description popup.authors Kondratenko Olga S. Mamontova Iryna B. Min’ko Viktor I. Shtykalo Oleksandr V. popup.nrat_date 2021-12-17 Close