Effect of synthesis conditions on phase composition, structure and lifetime of photogenerated current carriers in quadruple copper compounds cu2-Δ srsns4(0≤δ<0.4)

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详细

By the method of solid-phase ampoule synthesis the samples of Cu2-δSrSnS4 in the range of 0 0.4 were obtained. Cu2-δ SrSnS4in the range of 0≤δ<0.4, their lattice parameters were specified, and Raman spectra were studied as a function of δ. It was found that for these compounds a narrower region of single phase is observed in comparison with the compounds Cu2-δ BaSnS4 having similar structure. At the same time, Cu2-δ SrSnS4 samples are unstable when annealed in vacuum. By the method of microwave photoconductivity it was found that additional annealing of Cu2-δ SrSnS4 in the presence of SnS2 leads to a marked increase in the lifetime of photogenerated current carriers, which is apparently due to a decrease in the number of impurity phases and structural defects formed due to thermal instability during synthesis.

作者简介

M. Gapanovich

Federal Research Center for Problems of Chemical Physics and Medical Chemistry; Department of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University; Moscow Institute of Physics and Technology (National Research University)

Email: gmw1@mail.ru
Chernogolovka, Moscow Region, 142432; Moscow, 119991; Dolgoprudny, Moscow Region, 141701

E. Koltsov

Federal Research Center for Problems of Chemical Physics and Medical Chemistry; Moscow Institute of Physics and Technology (National Research University)

Email: gmw1@mail.ru
Chernogolovka, Moscow Region, 142432; Dolgoprudny, Moscow Region, 141701

E. Rabenok

Federal Research Center for Problems of Chemical Physics and Medical Chemistry

Email: gmw1@mail.ru
Chernogolovka, Moscow Region, 142432

D. Kalimullina

Department of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University

Email: gmw1@mail.ru
Moscow, 119991

V. Rakitin

Federal Research Center for Problems of Chemical Physics and Medical Chemistry

Email: gmw1@mail.ru
Chernogolovka, Moscow Region, 142432

D. Lutsenko

Federal Research Center for Problems of Chemical Physics and Medical Chemistry; Faculty of Chemistry, Lomonosov Moscow State University

Email: gmw1@mail.ru
Chernogolovka, Moscow Region, 142432; Moscow, 119991

B. Golovanov

Federal Research Center for Problems of Chemical Physics and Medical Chemistry; Joint Stock Company “Experimental Plant of Scientific Instrumentation with Special Design Bureau of the Russian Academy of Sciences”

Email: gmw1@mail.ru
Chernogolovka, Moscow Region, 142432; Chernogolovka, Moscow Region, 142432

D. Korchagin

Federal Research Center for Problems of Chemical Physics and Medical Chemistry

Email: gmw1@mail.ru
Chernogolovka, Moscow Region, 142432

G. Shilov

Federal Research Center for Problems of Chemical Physics and Medical Chemistry

Email: gmw1@mail.ru
Chernogolovka, Moscow Region, 142432

D. Sedlovets

Institute for Problems of Microelectronics Technology and High-Purity Materials of the Russian Academy of Sciences; Joint Stock Company “Experimental Plant of Scientific Instrumentation with Special Design Bureau of the Russian Academy of Sciences”

编辑信件的主要联系方式.
Email: gmw1@mail.ru
Chernogolovka, Moscow region, 142432; Chernogolovka, Moscow Region, 142432

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