Synthesis and crystal and defect structures of polycrystalline Cu2SrSnS4 and Cu1.9SrSnS4 powders

被引：2

作者：

Gapanovich, Mikhail, V ^{[1
,2
]}

Rabenok, Evgenia, V ^{[1
]}

Chikin, Fyodor K. ^{[2
]}

Golovanov, Boris I. ^{[1
]}

Odin, Ivan N. ^{[3
]}

Rakitin, Vladimir V. ^{[1
]}

Sedlovets, Daria M. ^{[4
]}

Korchagin, Denis, V ^{[1
]}

Shilov, Gennady, V ^{[1
]}

机构：

[1] Russian Acad Sci, Fed Res Ctr Problems Chem Phys & Med Chem, Chernogolovka 142432, Moscow, Russia

[2] M V Lomonosov Moscow State Univ, Dept Fundamental Phys & Chem Engn, Moscow 119991, Russia

[3] M V Lomonosov Moscow State Univ, Dept Chem, Moscow 119991, Russia

[4] Russian Acad Sci, Inst Microelect Technol & High Pur Mat, Chernogolovka 142432, Moscow, Russia

来源：

MENDELEEV COMMUNICATIONS | 2023年 / 33卷 / 02期

关键词：

copper quaternary compounds; Cu2-dSrSnS4; polycrystalline powders; defect structure; cathodoluminescence; lifetimes of photogenerated current carriers; SOLID-SOLUTIONS; LUMINESCENCE;

D O I：

10.1016/j.mencom.2023.02.037

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The polycrystalline samples of Cu2 - dSrSnS4 with a trigonal structure were prepared by solid-phase ampoule synthesis with a long annealing time (1944 h), and their crystal lattice parameters were refined and Raman spectra were obtained. For the first time, the effect of defect structure on the lifetimes of photogenerated current carriers in the polycrystalline powders was examined by combining time-resolved microwave photoconductivity and cathodoluminescence methods. A significant increase in the lifetimes during the conversion of Cu2SrSnS4 into Cu1.9SrSnS4 was found, which was probably due to changes in the defect structure.

引用

页码：264 / 266

页数：3

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