Computer Science – Performance
Scientific paper
Feb 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..605...83g&link_type=abstract
LOW TEMPERATURE DETECTORS: Ninth International Workshop on Low Temperature Detectors. AIP Conference Proceedings, Volume 605, p
Computer Science
Performance
Semiconductor-Device Characterization, Design, And Modeling, High-Field And Nonlinear Effects
Scientific paper
Semiconductor thermistors have been used for several years and their ideal behavior is well known both experimentally and theoretically. Their current performance is limited by non-ideal behaviors. These include 1/f noise and non-ohmic effects. We find that the 1/f noise appears to be a 2-D effect, and can be greatly reduced by fabricating thicker thermistors. Eliminating this noise could improve the intrinsic detector resolution as much as 40%. It also allows us to study other sources of excess noise in the thermometer. The non-ohmic behavior can be empirically explained using a hot-electron model. Although this model does not seem suitable for semiconductors in the variable range-hopping regime, where the electrons are localized, it fits the experimental data quite well. We measured an excess white noise at low frequencies consistent with the predicted thermodynamic fluctuations between electrons and phonons. We also measured a characteristic time of the non-ohmic behavior that is consistent with a C/G time constant in the hot electron model. Both results support the physical validity of the hot electron model. To optimize the performance of the next generation of detectors, we implemented the non-ideal behaviors in a model to predict the expected total noise and energy resolution. The comparison between the model and real data from the XRS experiment show good agreement. .
Boyce Kevin R.
Brekosky R.
Galeazzi Massimiliano
Gygax John D.
Kelley Richard L.
No associations
LandOfFree
Non-ideal effects in doped semiconductor thermistors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Non-ideal effects in doped semiconductor thermistors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-ideal effects in doped semiconductor thermistors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1790175