کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5421353 | 1507874 | 2017 | 5 صفحه PDF | دانلود رایگان |
- Time-resolved photoemission spectroscopy system was developed for a heated sample.
- Si 2p core spectra of the transient photovoltage effect were measured up to 880 °C.
- The technique can be applied to study molecular dynamics in high temperature catalysts.
We developed a time-resolved photoemission spectroscopy system for tracking the temporal variation in an electronic state of a heated sample. Our pump-probe method used laser and synchrotron radiation pulses on a silicon surface that was heated by a synchronized pulse current that did not interfere with the measurements. The transient surface photovoltage effect on the Si 2p core spectra was measured from room temperature to 880 °C and was found to be consistent with the thermal carrier distributions in silicon crystals at the corresponding temperatures. This versatile technique may have applications studying molecular dynamics on high temperature surfaces such as in catalytic reactions.
177
Journal: Surface Science - Volume 656, February 2017, Pages 43-47