Multi-Layer Organic Squaraine-Based Photodiode for Indirect X-Ray Detection

Iacchetti, Antonio; Binda, Maddalena; Natali, Dario; Giussani, M.; Beverina, Luca; Fiorini, C.; Peloso, R.; Sampietro, Marco

doi:10.1109/tns.2012.2201954

Cited by 11 publications

(7 citation statements)

References 29 publications

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“…Mat.). The device clearly shows a photodiode-like behavior, in accordance with previously reported results for similar optimized squaraine-based photodetectors [33]. Fig.…”

Section: Theorysupporting

confidence: 91%

Charge transport characterization in a squaraine-based photodetector by means of admittance spectroscopy

Bellani

Iacchetti

Porro

et al. 2015

Organic Electronics

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“…Mat.). The device clearly shows a photodiode-like behavior, in accordance with previously reported results for similar optimized squaraine-based photodetectors [33]. Fig.…”

Section: Theorysupporting

confidence: 91%

Charge transport characterization in a squaraine-based photodetector by means of admittance spectroscopy

Bellani

Iacchetti

Porro

et al. 2015

Organic Electronics

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“…There is a rising interest also for adopting organic photodiodes in the field of radiation detection, mainly direct and indirect X‐ray detection and alpha particle detection. The interested reader is referred to recent reviews and papers specific to the field 50–53…”

Section: Photodiodesmentioning

confidence: 99%

Organic Light Detectors: Photodiodes and Phototransistors

et al. 2013

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While organic electronics is mostly dominated by light-emitting diodes, photovoltaic cells and transistors, optoelectronics properties peculiar to organic semiconductors make them interesting candidates for the development of innovative and disruptive applications also in the field of light signal detection. In fact, organic-based photoactive media combine effective light absorption in the region of the spectrum from ultraviolet to near-infrared with good photogeneration yield and low-temperature processability over large areas and on virtually every substrate, which might enable innovative optoelectronic systems to be targeted for instance in the field of imaging, optical communications or biomedical sensing. In this review, after a brief resume of photogeneration basics and of devices operation mechanisms, we offer a broad overview of recent progress in the field, focusing on photodiodes and phototransistors. As to the former device category, very interesting values for figures of merit such as photoconversion efficiency, speed and minimum detectable signal level have been attained, and even though the simultaneous optimization of all these relevant parameters is demonstrated in a limited number of papers, real applications are within reach for this technology, as it is testified by the increasing number of realizations going beyond the single-device level and tackling more complex optoelectronic systems. As to phototransistors, a more recent subject of study in the framework of organic electronics, despite a broad distribution in the reported performances, best photoresponsivities outperform amorphous silicon-based devices. This suggests that organic phototransistors have a large potential to be used in a variety of optoelectronic peculiar applications, such as a photo-sensor, opto-isolator, image sensor, optically controlled phase shifter, and opto-electronic switch and memory.

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“…[ 23,24 ] Here we make use of DOD inkjet printing, [ 25 ] that allows the defi nition of structures with a lateral resolution down to 10 μ m (depending on the nozzle size, the substrate surface energy and the ink surface tension), to develop organic-based photodetectors with a completely additive approach, where both the electrodes and the photoactive layer are printed. [ 2 ] Aiming at largearea applications in the fi eld of visible light or X-ray digital imagers, we focus on devices with an active area of about 100 × 100 μ m. [26][27][28] Thanks to a thorough optimization of the deposition of the various layers, we obtain excellent optoelectronic performances for the fully printed devices, with good yield and reproducibility.…”

Section: Fully Inkjet Printed Organic Photodetectors With High Quantumentioning

confidence: 99%