Ultrafast Waveguiding Quantum Dot Scintillation Detector
Ultrafast Waveguiding Quantum Dot Scintillation Detector
复制标题
超快波导量子点闪烁探测器
DOI:
10.1016/j.nima.2018.10.150
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Oktyabrsky, S.
中科院分区:
文献类型:
--
作者:
Dropiewski, K.;Minns, A.;Yakimov, M.;Tokranov, V.;Murat, P.;Oktyabrsky, S.
Picosecond timing of energetic charged particles and photons is a challenge for many high-energy physics and medical applications. InAs Quantum Dots (QDs) embedded in GaAs matrix are expected to have unsurpassed scintillation properties. The advantages come from highly efficient energy conversion, as well as from fast electron capture and radiative recombination in QDs. We present design considerations and demonstration of an ultrafast, high photon yield room-temperature semiconductor scintillator. Due to the high refractive index of GaAs, the scintillator is fabricated in the form of a 20 μ m thick planar waveguide with an integrated InGaAs photodiode. QD luminescence of about 60% efficiency at room temperature has been shown, and modal attenuation stabilized at 1 cm− 1. Scintillation responses from 5.5 MeV alpha particles show an extremely fast decay time of 280 ps, a collection efficiency of 11% and a time resolution of 60 ps. This data confirms the unique potential properties of this scintillation detector.
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影响因子:
1.8
作者:
S. Oktyabrsky;M. Yakimov;V. Tokranov;P. Murat
通讯作者:
P. Murat
影响因子:
4
作者:
V. Tokranov;M. Yakimov;A. Katsnelson;M. Lamberti;S. Oktyabrsky
通讯作者:
V. Tokranov;M. Yakimov;A. Katsnelson;M. Lamberti;S. Oktyabrsky
影响因子:
4
作者:
Haiping Yu;S. Lycett;C. Roberts;R. Murray
通讯作者:
Haiping Yu;S. Lycett;C. Roberts;R. Murray
影响因子:
2.7
作者:
S. Oktyabrsky;V. Tokranov;M. Yakimov;A. Sergeev;V. Mitin
通讯作者:
V. Mitin
DOI:
10.1016/j.nima.2017.01.008
发表时间:
2017
影响因子:
1.4
作者:
K. Doroud;M. Williams
通讯作者:
M. Williams