A5069058992- Radiation Detection and Scintillator Technologies
- Perovskite Materials and Applications
- Organic Electronics and Photovoltaics
- Radiation Effects in Electronics
- Conducting polymers and applications
- Machine Learning in Materials Science
- Analytical Chemistry and Sensors
- Luminescence Properties of Advanced Materials
- Advanced Memory and Neural Computing
- Radiation Therapy and Dosimetry
- Medical Imaging Techniques and Applications
- Luminescence and Fluorescent Materials
- Advanced X-ray and CT Imaging
- Gas Sensing Nanomaterials and Sensors
- Atomic and Subatomic Physics Research
- Diamond and Carbon-based Materials Research
- Photorefractive and Nonlinear Optics
- Ga2O3 and related materials
- 2D Materials and Applications
- CCD and CMOS Imaging Sensors
- Semiconductor materials and devices
- Organic Light-Emitting Diodes Research
- Polymer Nanocomposite Synthesis and Irradiation
- Integrated Circuits and Semiconductor Failure Analysis
- Thermal properties of materials
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2021-2025
University of Bologna
2018-2025
Istituto Nazionale di Fisica Nucleare
2020-2025
Abstract Organic semiconductor materials exhibit a great potential for the realization of large-area solution-processed devices able to directly detect high-energy radiation. However, only few works investigated on mechanism ionizing radiation detection in this class materials, so far. In work we investigate physical processes behind X-ray photoconversion employing bis-(triisopropylsilylethynyl)-pentacene thin-films deposited by bar-assisted meniscus shearing. The thin film coating speed and...
Abstract The attention focused on the application of organic electronics for detection ionizing radiation is rapidly growing among international scientific community, due to great potential technology enable large‐area conformable sensor panels. However, high‐energy photon absorption challenging as materials are constituted atoms with low atomic numbers. Here it reported how, by synthesizing new solution‐processable molecules derived from 6,13‐bis(triisopropylsilylethynyl)pentacene...
The aim of this study is to assess direct X-ray detectors based on organic thin films, fabricated onto flexible plastic substrates and operating at ultra-low bias (<1 V), for different medical applications. With purpose, fully pixelated have been tested the imaging beamline SYRMEP (SYnchrotron Radiation MEdical Physics) Italian synchrotron Elettra, Trieste. detectors’ performance has assessed potential employment both as reliable wearable personal dosimeters patients systems. A spatial...
Abstract A flexible, fully organic detector for proton beams is presented here. The operates in the indirect mode and composed of a polysiloxane-based scintillating layer coupled to an phototransistor, that assessed flexibility low-voltage operation ( V = −1 V), with limit detection 0.026 Gy min . We present kinetic model able precisely reproduce dynamic response device under irradiation provide further insight into physical processes controlling it. This designed target real-time in-situ...
We present a novel microelectronic x-ray dosimeter compatible with flexible plastic substrates and passive RFID detection.
Abstract The implementation of organic semiconductor (OSC) materials in X‐ray detectors provides exciting new opportunities for developing a generation biocompatible devices with high potential the fabrication sensitive and low‐cost imaging systems. Here, performance field‐effect transistors (OFETs) based on blends 1,4,8,11‐tetramethyl‐6,13‐triethylsilylethynyl pentacene (TMTES) polystyrene is reported. films are printed employing low cost high‐throughput deposition technique. exhibit...
Abstract Blends of small‐molecule organic semiconductors (OSCs) and insulating polymers in Organic Field‐Effect Transistors (OFETs) are mainly used to assist the solution‐processing OSCs, but they can also reduce interfacial charge traps due vertical phase separation. Such known affect both electrical response radiation‐induced collection capability these devices. This study aims optimize separation blend films 1,4,8,11‐tetramethyl‐6,13‐triethylsilylethynyl pentacene (TMTES) polystyrene (PS)...
We report on a wearable, human tissue-equivalent, real-time dosimeter designed to quantitatively monitor radiation absorbed by patients during cancer treatments. The fully organic device has been characterized under actual clinical conditions using high-energy proton beam and an anthropomorphic phantom, with the aim simulate prostate therapy treatment. achieved full control over operation, we verified its linear response received dose. demonstrate that, proper functionalization of...
Abstract 2D hybrid perovskites are a novel and promising class of semiconductors for the realization direct fast neutron detectors because they combine excellent transport properties with large organic cation, rich in low‐Z elements, which strongly interacts neutrons. Here, this study presents employment PEA 2 PbBr 4 (PEA = C 6 H 5 NH 3 + ) thin films detection By tuning perovskite deposition process, it achieves stable reproducible response capable to monitor real‐time flux neutrons (energy...
The direct detection of 5-MeV protons by a flexible organic thin-film device is here reported.
Abstract This study reports on a novel, flexible, proton beam detector based mixed 3D–2D perovskite films deposited by solution onto thin plastic foils. The mixture allows to obtain micrometer‐thick and highly uniform that constitute the detector's active layer. devices demonstrate excellent flexibility with stable electric transport properties down bending radius of 3.1 mm. is characterized under 5 MeV fluxes in range [4.5 × 10 – 1.4 9 ] H + cm −2 s −1 , exhibiting response repetitive...
Abstract Real‐time and in‐line transversal monitoring of ionizing radiation beams is a crucial task for several applications which span from medical treatments to particle accelerators in high energy physics. Here flexible large area device based on 2D hybrid perovskite thin films (phenylethylammonium lead bromide), fabricated onto polyimide substrate, able map the beam profile reported. The performance this novel tool here compared with one offered by standard commercial large‐area...
Curved X-ray detectors have the potential to revolutionize diverse sectors due benefits such as reduced image distortion and vignetting compared their planar counterparts. While use of inorganic semiconductors for curved are restricted by brittle nature, organic-inorganic hybrid which incorporated bismuth oxide nanoparticles in an organic bulk heterojunction consisting poly(3-hexylthiophene-2,5-diyl) (P3HT) [6,6]-phenyl C71 butyric acid methyl ester (PC70 BM) considered be more promising...
Abstract Organic semiconductors are excellent candidates for X‐ray detectors that can adapt to new applications, with unique properties including mechanical flexibility and the ability cover large surfaces. Their chemical composition, primarily carbon hydrogen, makes them human tissue equivalent in terms of radiation absorption. This is a highly desirable property dosimeter be employed medical diagnostics therapy, however low‐Z composition limits absorption ionizing radiation. The detection...
Abstract Organic semiconductors are a promising material candidate for X‐ray detection. However, the low atomic number (Z) of organic leads to poor absorption thus restricting their performance. Herein, authors propose new strategy achieving high‐sensitivity performance detectors based on modified with high –Z heteroatoms. fabricated p‐type containing selenium heteroatoms (poly(3‐hexyl)selenophene (P3HSe)) in blends an n‐type fullerene derivative ([6,6]‐Phenyl C71 butyric acid methyl ester...
X-ray detection for personal dosimetry requires sensitive, stable and non-toxic materials. At the same time, scalability onto large-area flexible substrates is emerging as a desirable property. To satisfy these requirements, novel materials to be employed active layer of direct detectors are needed. In this search easy-processability, large area, efficient detection, we assess performance layered metal-organic chalcogenide [AgSePh] ∞ , recently proposed representative excitonic...
The development of high performance, thin and flexible light radiation sensors for real-time detection ionizing at affordable cost is interest in many application areas, ranging from medical diagnostics therapy to astrophysics, energy physics industrial testing, including civil protection. use organic semiconductor technology could meet the requirements large area, conformability portability, weight low power operation. In field photodetectors, phototransistors (OPT) have gained significant...
The development of detectors for protons and heavy particles is a long-lasting research topic not only fundamental applications but also, more recently, monitoring energy flow in ion beam applications. Nowadays, one the most demanding application beams hadron therapy cancer. In this field, beams, mostly proton are used controlled treatment cancer by focusing them onto small volumes to deliver tumor. effectiveness safety enhanced tuning both intensity position irradiate tumor way, preserving...
There is a growing need for curved X-ray detectors use in medical, industrial, and security applications imaging of complex shapes. Fabrication such require materials that can sustain mechanical stresses. Organic-inorganic hybrid consisting high atomic number nanoparticles an organic bulk heterojunction matrix has the potential to enable this. However semiconductors crystallise depending on their molecular weight, thereby restricting deformation. In this study, we evaluate influence weight...