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Research Article | 13-December-2017

HIGHLY SENSITIVE POROUS SILICON SENSOR: DETECTION OF ORGANIC VAPOURS USING PHOTOLUMINESCENCE QUENCHING TECHNIQUE

Porous silicon based sensors were tested in the presence of various linear aliphatic alcohols (methanol to n-hexanol) and water in the range of 10-100 ppm by photoluminescence quenching technique. An increasing trend in the degree of quenching was observed with the chain length of alcohols while minimum response was given to water. Sensitivity as high as 80-90% and nearly instant response time has proven the sensors to be highly efficient. Photoluminescence quenching phenomena is discussed on

Saakshi Dhanekar, S.S. Islam, T. Islam, Harsh

International Journal on Smart Sensing and Intelligent Systems, Volume 3 , ISSUE 1, 1–13

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