Effect of synthesis conditions on phase composition, structure and lifetime of photogenerated current carriers in quadruple copper compounds cu 2-  Δ  srsns 4 (0≤δ<0.4)

M. V. Gapanovich; Гапанович М. В.; E. N. Koltsov; Кольцов Е. Н.; E. V. Rabenok; Рабенок Е. В.; D. R. Kalimullina; Калимуллина Д. Р.; V. V. Rakitin; Ракитин В. В.; D. S. Lutsenko; Луценко Д. С.; B. I. Golovanov; Голованов Б. И.; D. V. Korchagin; Корчагин Д. В.; G. V. Shilov; Шилов Г. В.; D. M. Sedlovets; Седловец Д. М.

doi:10.31857/S0023119325050022

Effect of synthesis conditions on phase composition, structure and lifetime of photogenerated current carriers in quadruple copper compounds cu_2-_Δ srsns₄(0≤δ<0.4)

Authors: Gapanovich M.V.¹^,2^,3, Koltsov E.N.¹^,3, Rabenok E.V.¹, Kalimullina D.R.², Rakitin V.V.¹, Lutsenko D.S.¹^,4, Golovanov B.I.¹^,5, Korchagin D.V.¹, Shilov G.V.¹, Sedlovets D.M.⁶^,5
Affiliations:
1. Federal Research Center for Problems of Chemical Physics and Medical Chemistry
2. Department of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University
3. Moscow Institute of Physics and Technology (National Research University)
4. Faculty of Chemistry, Lomonosov Moscow State University
5. Joint Stock Company “Experimental Plant of Scientific Instrumentation with Special Design Bureau of the Russian Academy of Sciences”
6. Institute for Problems of Microelectronics Technology and High-Purity Materials of the Russian Academy of Sciences
Issue: Vol 59, No 5 (2025)
Pages: 309-316
Section: PHOTONICS
URL: https://journals.rcsi.science/0023-1193/article/view/307640
DOI: https://doi.org/10.31857/S0023119325050022
EDN: https://elibrary.ru/bkmhfw
ID: 307640

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Abstract

By the method of solid-phase ampoule synthesis the samples of Cu2-δSrSnS4 in the range of 0 0.4 were obtained. Cu_2-_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 Cu_2-_δ BaSnS₄having similar structure. At the same time, Cu_2-_δ SrSnS₄samples are unstable when annealed in vacuum. By the method of microwave photoconductivity it was found that additional annealing of Cu_2-_δ SrSnS₄in the presence of SnS₂leads 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.

Keywords

Cu_2-δSrSnS₄, Cu_2-_δSrSnS₄, annealing, structure, microwave photoconductivity, lifetime of photogenerated current carriers

References

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