For the mechanism of the excitation of Er3+ ions in a-Si, it was proposed that photoexcited electrons which recombine on Si dangling bonds (DBs) transfer their energy nonradiatively to closely neighbored Er3+ ions.

• 对于Er~(3+)在a-Si中的激发机制，曾有人提出了光致电子在Si悬挂键(Si DBs)上复合，将能量以非辐射的方式转移到近邻的Er~(3+)的理论。