DOI: 10.58530/2022/3840
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Effect of doping on the dynamic nuclear polarization of porous silicon nanoparticles

Abstract: Porous Si nanoparticles (NPs) with different doping degree were prepared using low-load metal assisted catalytic etching and subjected to dynamic nuclear polarization at 3.4 T and 6.7 T. Thermal oxidation of Si was applied to form paramagnetic centers of dangling bond type in Si/SiO2 interface, which were used to polarize 29Si nuclei. The doping significantly affected the gained polarization and buildup times: high doping degree generally led to lower and faster polarization compared to the low doping. On the … Show more

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