Formation of Impurity Accumulations in Silicon Doped with Nickel and Copper S.Z. Zainabidinov, Sh.K. Akbarov, N.A. Turgunov, N.B. Khaytimmetov and R.M. Turmanova E3S Web Conf., 632 (2025) 03004 Published online: 03 June 2025 DOI: 10.1051/e3sconf/202563203004