scholarly journals Highly efficient photon detection systems for noble liquid detectors based on perovskite quantum dots

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Amlan Datta ◽  
Biplob Barman ◽  
Stephen Magill ◽  
Shariar Motakef
Keyword(s):  
Quantum Dots ◽  
High Energy Physics ◽  
High Energy ◽  
Large Area ◽  
Scintillation Light ◽  
Dark Matter Search ◽  
Photon Detection ◽  
Detection Systems ◽  
Highly Efficient ◽  
Efficient Detection

Abstract Wavelength shifting photon detection systems (PDS) are the critical functioning components in noble liquid detectors used for high energy physics (HEP) experiments and dark matter search. The vacuum ultraviolet (VUV) scintillation light emitted by these Liquid argon (LAr) and liquid Xenon (LXe) detectors are shifted to higher wavelengths resulting in its efficient detection using the state-of-the-art photodetectors such as silicon photomultipliers (SiPM). The currently used organic wavelength shifting materials [such as 1,1,4,4 Tetraphenyl Butadiene (TPB)] have several disadvantages and are unreliable for longterm use. In this study, we demonstrate the application of the inorganic perovskite cesium lead bromide (CsPbBr3) quantum dots (QDs) as highly efficient wavelength shifters. The absolute photoluminescence quantum yield of the PDS fabricated using these QDs exceeds 70%. CsPbBr3-based PDS demonstrated an enhancement in the SiPM signal enhancement by up to 3 times when compared to a 3 µm-thick TPB-based PDS. The emission spectrum from the QDs was optimized to match the highest quantum efficiency region of the SiPMs. In addition, we have demonstrated the deposition of the QD-based wavelength shifting material on a large area PDS substrate using low capital cost and widely scalable solution-based techniques providing a pathway appropriate for meter-scale PDS fabrication and widespread use for other wavelength shifting applications.

Graphitic carbon quantum dots as a fluorescent sensing platform for highly efficient detection of Fe3+ ions

RSC Advances ◽  
2013 ◽  
Vol 3 (11) ◽  
pp. 3733 ◽  
Author(s):  
Yong-Lai Zhang ◽  
Lei Wang ◽  
Heng-Chao Zhang ◽  
Yang Liu ◽  
Hai-Yu Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Quantum Dots ◽  
Graphitic Carbon ◽  
Fluorescent Sensing ◽  
Highly Efficient ◽  
Efficient Detection ◽  
Sensing Platform

scholarly journals Inorganic, Organic, and Perovskite Halides with Nanotechnology for High–Light Yield X- and γ-ray Scintillators

Crystals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 88 ◽  
Author(s):  
Francesco Maddalena ◽  
Liliana Tjahjana ◽  
Aozhen Xie ◽  
Arramel ◽  
Shuwen Zeng ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Low Cost ◽  
Light Yield ◽  
Fast Response ◽  
High Energy ◽  
High Light ◽  
Scintillation Light ◽  
High Light Yield ◽  
Halide Perovskites ◽  
Lead Halide

Trends in scintillators that are used in many applications, such as medical imaging, security, oil-logging, high energy physics and non-destructive inspections are reviewed. First, we address traditional inorganic and organic scintillators with respect of limitation in the scintillation light yields and lifetimes. The combination of high–light yield and fast response can be found in Ce 3 + , Pr 3 + and Nd 3 + lanthanide-doped scintillators while the maximum light yield conversion of 100,000 photons/MeV can be found in Eu 3 + doped SrI 2 . However, the fabrication of those lanthanide-doped scintillators is inefficient and expensive as it requires high-temperature furnaces. A self-grown single crystal using solution processes is already introduced in perovskite photovoltaic technology and it can be the key for low-cost scintillators. A novel class of materials in scintillation includes lead halide perovskites. These materials were explored decades ago due to the large X-ray absorption cross section. However, lately lead halide perovskites have become a focus of interest due to recently reported very high photoluminescence quantum yield and light yield conversion at low temperatures. In principle, 150,000–300,000 photons/MeV light yields can be proportional to the small energy bandgap of these materials, which is below 2 eV. Finally, we discuss the extraction efficiency improvements through the fabrication of the nanostructure in scintillators, which can be implemented in perovskite materials. The recent technology involving quantum dots and nanocrystals may also improve light conversion in perovskite scintillators.

Investigation of parameters of new MAPD-3NM silicon photomultipliers

2022 ◽  
Vol 17 (01) ◽  
pp. C01001
Author(s):  
F. Ahmadov ◽  
G. Ahmadov ◽  
R. Akbarov ◽  
A. Aktag ◽  
E. Budak ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Gamma Ray ◽  
Detection Efficiency ◽  
High Energy ◽  
Efficiency Gain ◽  
Space Application ◽  
Silicon Photomultipliers ◽  
Photon Detection ◽  
Photon Detection Efficiency ◽  
Energy Physics

Abstract In the presented work, the parameters of a new MAPD-3NM-II photodiode with buried pixel structure manufactured in cooperation with Zecotek Company are investigated. The photon detection efficiency, gain, capacitance and gamma-ray detection performance of photodiodes are studied. The SPECTRIG MAPD is used to measure the parameters of the MAPD-3NM-II and scintillation detector based on it. The obtained results show that the newly developed MAPD-3NM-II photodiode outperforms its counterparts in most parameters and it can be successfully applied in space application, medicine, high-energy physics and security.

Magnetic electrochemiluminescent immunoassay with quantum dots label for highly efficient detection of the tumor marker α-fetoprotein

2017 ◽  
Vol 785 ◽  
pp. 8-13 ◽  
Author(s):  
Zheng-Jun Huang ◽  
Wen-Di Han ◽  
Yan-Hong Wu ◽  
Xiang-Guang Hu ◽  
Ya-Ni Yuan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Tumor Marker ◽  
Highly Efficient ◽  
Efficient Detection

Highly efficient detection of cancer-derived exosomes using modified core–shell electrospun nanofibers as a capture substrate and antibody immobilized-graphene quantum dots as a signaling agent

2020 ◽  
Vol 12 (28) ◽  
pp. 3670-3681
Author(s):  
Fatemeh Barati ◽  
Ayyoob Arpanaei ◽  
Matin Mahmoudifard
Keyword(s):  
Quantum Dots ◽  
Medical Diagnosis ◽  
Graphene Quantum Dots ◽  
Electrospun Nanofibers ◽  
Core Shell ◽  
The Past ◽  
Highly Efficient ◽  
Efficient Detection

In the past few years graphene quantum dots (GQDs) have been used as a signaling agent for medical diagnosis.

scholarly journals Overview of CMOS Sensors for Future Tracking Detectors

Instruments ◽  
2020 ◽  
Vol 4 (4) ◽  
pp. 36
Author(s):  
Ricardo Marco-Hernández
Keyword(s):  
High Energy Physics ◽  
Complementary Metal Oxide Semiconductor ◽  
High Energy ◽  
Oxide Semiconductor ◽  
High Resistivity ◽  
Large Area ◽  
Cmos Sensors ◽  
Signal Sensitivity ◽  
Physics Experiments ◽  
General Perspective

Depleted Complementary Metal-Oxide-Semiconductor (CMOS) sensors are emerging as one of the main candidate technologies for future tracking detectors in high luminosity colliders. Their capability of integrating the sensing diode into the CMOS wafer hosting the front-end electronics allows for reduced noise and higher signal sensitivity, due to the direct collection of the sensor signal by the readout electronics. They are suitable for high radiation environments due to the possibility of applying high depletion voltage and the availability of relatively high resistivity substrates. The use of a CMOS commercial fabrication process leads to their cost reduction and allows faster construction of large area detectors. In this contribution, a general perspective of the state of the art of CMOS detectors for High Energy Physics experiments is given. The main developments carried out with regard to these devices in the framework of the CERN RD50 collaboration are summarized.

Graphene quantum dots as a fluorescent sensing platform for highly efficient detection of copper(II) ions

2014 ◽  
Vol 190 ◽  
pp. 516-522 ◽  
Author(s):  
Fengxiang Wang ◽  
Zhenyan Gu ◽  
Wu Lei ◽  
Wenjuan Wang ◽  
Xifeng Xia ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Fluorescent Sensing ◽  
Highly Efficient ◽  
Efficient Detection ◽  
Sensing Platform

scholarly journals Gram-scale synthesis of carbon quantum dots with a large Stokes shift for the fabrication of eco-friendly and high-efficiency luminescent solar concentrators

2021 ◽  
Author(s):  
Haiguang Zhao ◽  
Guiju Liu ◽  
Shujie You ◽  
Franco V. A. Camargo ◽  
Margherita Zavelani-Rossi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Efficiency ◽  
Stokes Shift ◽  
Carbon Quantum Dots ◽  
Large Area ◽  
Optical Efficiency ◽  
Solar Concentrators ◽  
Large Stokes Shift ◽  
Highly Efficient ◽  
Luminescent Solar Concentrators

Highly efficient large-area luminescent solar concentrators (LSCs) were demonstrated using colloidal C-dots. The large-area LSC (225 cm2) exhibited an external optical efficiency of 2.2% (under natural sun irradiation, 60 mW cm−2).

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