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Author: Jason Ryan

Displaying records 1 to 10 of 22 records.
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1. Accurate Fast Capacitance Measurements for Reliable Device Characterization
Published: 7/1/2014
Authors: Pragya Rasmi Shrestha, Kin P Cheung, Jason P Campbell, Jason T Ryan, Helmut Baumgart
Abstract: As device dimensions continue to scale, transient phenomena are becoming increasingly more important to understand for both performance and reliability considerations. Recently, fast capacitances versus voltage (CV) measurements have been gaining at ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915216

2. Constant Shape Factor Frequency Modulated Charge Pumping (FMCP)
Published: 3/3/2014
Authors: Jason T Ryan, Jason P Campbell, Jibin Zou, Kin P Cheung, Richard Southwick, Anthony Oates, Rue Huang
Abstract: Abstract, We examine the seemingly frequency-dependent gate leakage current component of frequency-modulated charge pumping and show it to be a measurement artifact. If untreated, this results in erroneous defect density extractions. We present a co ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915082

3. Fast-Capacitance for Advanced Device Characterization
Published: 3/3/2014
Authors: Pragya Rasmi Shrestha, Kin P Cheung, Jason T Ryan, Jason P Campbell, Helmut Baumgart
Abstract: Fast-CV measurements are frequently being used to study transient phenomena associated with advanced devices. In this study, we show that many artifacts plague this measurement and then provide a proper method to legitimize fast-CV measurements as tr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914753

4. Reliability Monitoring For Highly Leaky Devices
Published: 5/31/2013
Authors: Jason T Ryan, Jason P Campbell, Kin P Cheung, John S Suehle, Richard Southwick, Anthony Oates
Abstract: We demonstrate a new charge pumping (CP) methodology, frequency modulated CP (FMCP), that robustly treats metrology challenges associated with high gate leakage current. By moving to an AC coupled measurement, we are able to easily resolve small CP s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913575

5. Frequency Dependent Charge Pumping -- A Defect Depth Profiling Tool?
Published: 1/31/2013
Authors: Jason T Ryan, Richard G. Southwick, Jason P Campbell, Kin P Cheung, John S Suehle
Abstract: We investigate the validity of using frequency-dependent charge pumping (FD-CP) to determine bulk defect depth distributions. Using simple physical arguments we conclude that: (1) the effective tunneling length to a bulk defect can be very different ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913573

6. SERIES RESISTANCE: A MONITOR FOR HOT CARRIER STRESS
Published: 1/31/2013
Authors: Jason P Campbell, Serghei Drozdov, Kin P Cheung, Richard G. Southwick, Jason T Ryan, John S Suehle, Anthony Oates
Abstract: In this work, we examine a series resistance extraction technique which yields accurate values from single nano-scale devices. The series resistance values, derived from this extraction technique, are shown to be sensitive to hot carrier degradation ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913576

7. Observation of Interface/Near Interface Defects in 4H SiC MOSFETs With a New Electrically Detected Magnetic Resonance Technique
Published: 1/1/2013
Authors: Jason T Ryan, Brad Bittel, Pat Lenahan, Jody Fronheiser, Aivars Lelis
Abstract: We study 4H SiC MOSFETs with a new electrically detected magnetic resonance technique (EDMR) we call spin dependent charge pumping (SDCP). Our SDCP results demonstrate a tremendous improvement in sensitivity over other EDMR techniques. Addition ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912340

8. On the Contribution of Bulk Defects on Charge Pumping Current
Published: 10/1/2012
Authors: Jason T Ryan, Richard G. Southwick, Jason P Campbell, Kin P Cheung, John S Suehle
Abstract: Frequency dependent charge pumping (FD-CP) has emerged as a popular technique for studying the spatial and energetic distribution of defect centers in advanced high-k gate stacks. However, conflicting interpretations of the charge pumping frequency - ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911823

9. Physical Model for Random Telegraph Noise Amplitudes and Implications
Published: 6/12/2012
Authors: Richard G. Southwick, Kin P Cheung, Jason P Campbell, Serghei Drozdov, Jason T Ryan, John S Suehle, Anthony Oates
Abstract: Random Telegraph Noise (RTN) has been shown to surpass random dopant fluctuations as a cause for decananometer device variability, through the measurement of a large number of ultra-scaled devices [1]. The most worrisome aspect of RTN is the tail of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911514

10. Channel Length-Dependent Series Resistance?
Published: 6/10/2012
Authors: Jason P Campbell, Kin P Cheung, Serghei Drozdov, Richard G. Southwick, Jason T Ryan, Tony Oates, John S Suehle
Abstract: A recently developed series resistance (RSD) extraction procedure from a single nanoscale device is shown to be highly robust. Despite these virtues, the technique unexpectedly results in a channel length-dependent RSD which is observed across a wide ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911515



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