Photoluminescent films of nanocrystalline silicon doped with metals

• Дата: 2002
• Автори: Kaganovich, E.B., Kirillova, S.I., Manoilov, E.G., Primachenko, V.E., Svechnikov, S.V., Venger, E.F., Bazylyuk, I.R.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2002
• Назва видання: Semiconductor Physics Quantum Electronics & Optoelectronics
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/121181
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Photoluminescent films of nanocrystalline silicon doped with metals / E.B. Kaganovich, S.I. Kirillova, E.G. Manoilov, V.E. Primachenko, S.V. Svechnikov, E.F. Venger, I.R. Bazylyuk // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2002. — Т. 5, № 2. — С. 125-132. — Бібліогр.: 23 назв. — англ.

Effects of electropositive (Au, Ag, Cu) and electronegative (Al, In) metal impurities are investigated from the viewpoint of photoluminescent and electronic properties of nanocrystalline silicon films prepared by laser ablation when depositing them onto a silicon substrate. Measured are time-resolved photoluminescence e. It was ascertained that only Au could essentially increase intensity and stability of photoluminescence, increase its relaxation time by three orders of magnitude as well as decrease the density of states near the film-substrate boundary. It has been shown that the metal impurities provide an essential effect on photovoltage arising in films of nanocrystalline Si as well as the capture of non-equilibrium electrons by traps both in films themselves and at the substrate boundary.