The acceptor removal phenomenon (ARP), which hampers the functionality of low-gain avalanche detectors (LGAD), is discussed in frame of the A_Si-Si_i-defect model. The assumption of fast diffusion of interstitial silicon is shown to be superfluous for the explanation of the B_Si-Si_i-defect formation under irradiation, particular at very low temperatures. The experimentally observed properties of the ARP are explained by the donor properties of the B_Si-Si_i-defect in its ground state. Additionally, low temperature photoluminescence spectra are reported for quenched boron doped silicon showing so far unidentified PL lines, which change due to well-known light-induced degradation (LID) treatments.
@article{arxiv.2311.07280,
title = {Effect of inelastic ion collisions on low-gain avalanche detectors explained by an A_Si-Si_i-defect mode},
author = {Kevin Lauer and Stephanie Reiß and Aaron Flötotto and Katharina Peh and Dominik Bratek and Robin Müller and Dirk Schulze and Wichard Beenken and Erik Hiller and Thomas Ortlepp and Stefan Krischok},
journal= {arXiv preprint arXiv:2311.07280},
year = {2023}
}