Using rapid-scan EPR to improve the detection limit of quantitative EPR by more than one order of magnitude

作者：Moeser J^*; Lips K; Tseytlin M; Eaton G R; Eaton S S; Schnegg A^*

来源：Journal of Magnetic Resonance, 2017, 281: 17-25.

DOI：10.1016/j.jmr.2017.04.003

• Rapid-scan EPR
• Quantitative EPR
• Sensitivity
• Amorphous silicon

X-band rapid-scan EPR was implemented on a commercially available Bruker ELEXSYS E580 spectrometer. Room temperature rapid-scan and continuous-wave EPR spectra were recorded for amorphous silicon powder samples. By comparing the resulting signal intensities the feasibility of performing quantitative rapid-scan EPR is demonstrated. For different hydrogenated amorphous silicon samples, rapid-scan EPR results in signal-to-noise improvements by factors between 10 and 50. Rapid-scan EPR is thus capable of improving the detection limit of quantitative EPR by at least one order of magnitude. In addition, we provide a recipe for setting up and calibrating a conventional pulsed and continuous wave EPR spectrometer for rapid-scan EPR.

• 出版日期2017-8