@inproceedings{b4d0786cfe7a4ade8dfc1a3e2795b188,
title = "Self-Powered Betavoltaic Cell Design for Enabling Long-Term Power in Space",
abstract = "In this work, GaN-based PIN betavoltaic cells were fabricated and experimentally evaluated under electron beam irradiation. The devices were fabricated on GaN-on-sapphire templates, using both fully and partially anode-covered layouts to examine the effect of anode coverage on power conversion efficiency. The devices were characterized under dark and 17 keV electron beam irradiation, corresponding to the average energy of Ni-63 beta decay. Monte Carlo simulations were conducted to evaluate the energy absorption and penetration depth of incident electrons within the GaN layers. In our results, the fully anode-covered structure exhibited the highest performance, achieving power conversion efficiency of 4.75\%, which is the highest reported value for GaN-based betavoltaic cells under equivalent irradiation conditions.",
keywords = "betavoltaic cell, e-beam irradiation, GaN, monte carlo simulation, PIN junction",
author = "Jaewon Park and Kwak, \{Hyeon Tak\} and Kim, \{Dong Seok\} and Lee, \{Hyun Woo\} and Kwak, \{Hoe Min\} and Huiyun Jung and Donghan Kim and Kim, \{Dong Young\} and Kim, \{Jeong Gil\} and Hongsik Park and Bae, \{Sung Bum\} and Lee, \{Hyung Seok\}",
note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 16th International Conference on Information and Communication Technology Convergence, ICTC 2025 ; Conference date: 14-10-2025 Through 17-10-2025",
year = "2025",
doi = "10.1109/ICTC66702.2025.11388402",
language = "English",
series = "International Conference on ICT Convergence",
publisher = "IEEE Computer Society",
pages = "757--758",
booktitle = "2025 16th International Conference on Information and Communication Technology Convergence, ICTC 2025",
address = "United States",
}