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- W2039203478 abstract "A new class of photodetectors, whose active material is an organic semiconductor, has been developed. Thanks to the ease of deposition on any dielectric surface, the device may be built directly on the cleaved surface of an optical fiber, therefore realizing an on-fiber-detector (OFD). The photodetector is based on an organic semiconductor belonging to a new general class of neutral dithiolenes deposited onto a quartz substrate with microlithographically defined gold electrodes so to realize a metal-semiconductor-metal surface structure. First experimental results on a photodiode made of (monoreduced imidazolidine-2,4,5-trithione) having peak responsivity at 1014nm, have shown a time response down to 100microseconds, at present limited by the leakage current noise due to the poorly rectifying contacts. Differently from the vast majority of organic semiconductor materials, dithiolenes have shown extremely high chemical and thermal stability. The photoresponse of the dithiolenes in the liquid phase is shown to be wavelength selective with an absorption peak about 150nm wide that can be chemically tailored so to shift from almost 1000nm to 1700nm. Experimental measurements to prove that the absorption property is maintained in the solid state also at wavelengths around 1500nm, thus covering with a photodetector the spectrum of possible telecom applications, are under way." @default.
- W2039203478 created "2016-06-24" @default.
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- W2039203478 date "2003-04-14" @default.
- W2039203478 modified "2023-09-23" @default.
- W2039203478 title "Organic photodetectors: a possible technology for on-fiber receivers" @default.
- W2039203478 doi "https://doi.org/10.1117/12.468549" @default.
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