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A. ELAHI1, M. H. SAYYAD1,* , Kh. S. KARIMOV2, Kh. ZAKAULLAH1, M. SALEEM1
The photo-electrical behavior of n-Si/orange dye, vinyl-ethynyl-trimethyl-piperidole/conductive glass sandwich type sensor is investigated. In this sensor the crystalline silicon of n-type and conductive glass (CG) electrodes are employed and as electrolyte the 0.5 and 1 wt.% solutions of organic dye (OD) and vinyl-ethynyl-trimethyl-piperidole (VETP) in a mixture of distilled water (80%) and spirit is used. Properties of the n-Si/OD-VETP/CG sensor are investigated at the inter-electrode distances of 3 mm, 15 mm, and 30 mm. Photo-induced under IR, Red, Green and Blue LEDs illuminations, open-circuit voltage and short-circuit current are investigated and it is found that the sensor is sensitive in the range of 500 nm – 850 nm. It is observed that with increase of the inter-electrode distance the current increases and voltage remains constant. Increase of concentration of the OD and VETP in the solution results to increase of the voltage and decrease of the current. In the light-voltage/current conversion this sensor behaved as a photoelectric differentiator.
Photoelectric sensor, Orange dye, Organic semiconductor, Vinyl-ethynyl-trimethyl-piperidole.
A. ELAHI, M. H. SAYYAD, Kh. S. KARIMOV, Kh. ZAKAULLAH, M. SALEEM, The photo-electrical behavior of n-Si/orange dye, vinylethynyl- trimethyl-piperidole/conductive glass electrochemical sensor, Optoelectronics and Advanced Materials - Rapid Communications, 1, 7, July 2007, pp.333-338 (2007).
Submitted at: April 5, 2007
Accepted at: June 26, 2007
Optoelectronics and Advanced Materials - Rapid Communications
(2024): Impact Factor = 0.4 - Journal Citation Reports (Clarivate Analytics, 2025)
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