Zobrazeno 1 - 10
of 81
pro vyhledávání: '"K.W. Kirchner"'
Autor:
Kenneth A. Jones, Puneet Suvarna, K.W. Kirchner, Michael A. Derenge, Shadi Shahedipour-Sandvik
Publikováno v:
Solid-State Electronics. 101:23-28
An AlN annealing cap has been developed for GaN films grown on sapphire substrates that enables them to be annealed at temperatures as high as 1300 °C for times as long as 30 min or times as long as 120 min at a temperature of 1150 °C without creat
Autor:
Kenneth A. Jones, Joshua R. Smith, Edward A. Preble, Randy P. Tompkins, K. Udwary, Fatemeh Shahedipour-Sandvik, Puneet Suvarna, Jacob H. Leach, K.W. Kirchner, Jeffrey M. Leathersich
Publikováno v:
Journal of Electronic Materials. 43:850-856
We have examined the performance of gallium nitride (GaN) high-power Schottky diodes fabricated on unintentionally doped (UID) metalorganic chemical vapor deposition (MOCVD) films grown simultaneously on four substrates ranging in threading dislocati
Autor:
Fatemeh Shahedipou-Sandvik, Randy P. Tompkins, Puneet Suvana, J. R. Smith, Michael A. Derenge, Jacob H. Leach, Robert Metzger, K.W. Kirchner, Mihir Tungare, Shuai Zhou, Kenneth A. Jones
Publikováno v:
ECS Transactions. 50:297-305
Point defects in the GaN cause premature breakdown in GaN Schottky diodes at least to the same extent as dislocations do. The most likely cause is impact ionization of deep acceptors. A primary deep acceptor in MOCVD-grown GaN is C. Another is a Ga v
Autor:
Jacob H. Leach, Shuai Zhou, Kenneth A. Jones, Fatemeh Shahedipour-Sandvik, Michael A. Derenge, Robert Metzger, Mihir Tungare, Randy P. Tompkins, Puneet Suvarna, Cuong B. Nguyen, Timothy A. Walsh, G. Mulholland, K.W. Kirchner
Publikováno v:
Solid-State Electronics. 79:238-243
Hydride vapor phase epitaxy (HVPE) grown GaN was evaluated for high power Schottky diodes (SDs) because it contains much less carbon and grows much more rapidly than other typical growth methods. The results are encouraging for applications
Autor:
Kenneth A. Jones, Puneet Suvarna, K. Udwary, Shuai Zhou, Randy P. Tompkins, Michael A. Derenge, Joshua R. Smith, Mihir Tungare, Jacob H. Leach, Edward A. Preble, Fatemeh Shahedipour-Sandvik, Greg Mulholland, K.W. Kirchner
Publikováno v:
ECS Transactions. 45:17-25
With its wide bandgap and associated high critical field, GaN is a suitable material for high power electronics. Our group has identified carbon incorporation into the drift region as problematic for the development of GaN power Schottky diodes. The
Publikováno v:
Journal of Crystal Growth. 312:2661-2670
GaN films were grown by metal organic chemical vapor deposition on TaC substrates that were created by pulsed laser deposition of TaC onto (0 0 0 1) SiC substrates at ∼1000 °C. This was done to determine if good quality TaC films could be grown, a
Autor:
Michael A. Derenge, Tsvetanka Zheleva, Tangali S. Sudarshan, A. Bolonikov, S.S. Hullavarad, S. Dhar, R. D. Vispute, Kenneth A. Jones, K.W. Kirchner, Mark C. Wood
Publikováno v:
Journal of Electronic Materials. 37:917-924
The effectiveness of AlN/BN and graphite annealing caps for ion implanted SiC was examined morphologically, structurally, chemically, and electrically. The AlN/BN cap more effectively blocks the out-diffusion of silicon because it is essentially iner
Publikováno v:
Materials Science Forum. :213-218
Double and triple crystal rocking curve and peak position maps are constructed for a 4HSiC wafer for the symmetric (0 0 0 8) reflection in the normal position, the same reflection for a sample rotated 90º, and an asymmetric (1 23 6) reflection fo
Autor:
Michael A. Derenge, Shiva S. Hullavarad, K.W. Kirchner, Tangali S. Sudarshan, Sankar Dhar, Tsvetanka Zheleva, R. D. Vispute, A. Bolonikov, Kenneth A. Jones, Mark C. Wood
Publikováno v:
Materials Science Forum. :575-578
4H-SiC samples implanted with 1020 Al were annealed at various temperatures with a BN/AlN or graphite cap, and there morphological, structural, and electrical properties are compared. No blow holes were observed in either cap. Some Si out-diffuses th
Autor:
Matthew H. Ervin, Michael A. Derenge, Kenneth A. Jones, Shiva S. Hullavarad, K.W. Kirchner, Tsvetanka Zheleva, R. D. Vispute
Publikováno v:
Solid-State Electronics. 48:1867-1872
AlN deposited on 4H–SiC by pulsed laser deposition (PLD) did not noticeably deteriorate when it was annealed in an Ar atmosphere at 1500 °C for 30 min, but it contained numerous thermal etch pits when it was annealed at 1600 °C as determined by S