Low voltage high-energy α-particle detectors by GaN-on-GaN Schottky diodes with record-high charge collection efficiency

• Main Authors: Sandupatla, Abhinay, Arulkumaran, Subramaniam, Ranjan, Kumud, Ng, Geok Ing, Murmu, Peter P., Kennedy, John, Nitta, Shugo, Honda, Yoshio, Deki, Manato, Amano, Hiroshi
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Electrical and electronic engineering; High-energy α-particle Detection; Low Voltage
• Online Access: https://hdl.handle.net/10356/137841
• Institution: Nanyang Technological University

A low voltage (−20 V) operating high-energy (5.48 MeV) α-particle detector with a high charge collection efficiency (CCE) of approximately 65% was observed from the compensated (7.7 × 1014 /cm3) metalorganic vapor phase epitaxy (MOVPE) grown 15 µm thick drift layer gallium nitride (GaN) Schottky dio...