Formation of a Two-Phase Structure in CH3NH3PbI3Organometallic Perovskite

被引：4

作者：

Amasev, D. V. ^{[1
]}

Mikhalevich, V. G. ^{[1
]}

Tameev, A. R. ^{[2
,3
]}

Saitov, Sh. R. ^{[4
]}

Kazanskii, A. G. ^{[4
]}

机构：

[1] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia

[2] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia

[3] Russian Acad Sci, Postovsky Inst Organ Synth, Ural Branch, Ekaterinburg 620137, Russia

[4] Lomonosov Moscow State Univ, Moscow 119991, Russia

来源：

SEMICONDUCTORS | 2020年 / 54卷 / 06期

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

perovskites; modification by annealing; two-phase films; photoconductivity; PBI2;

D O I：

10.1134/S1063782620060020

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effect of annealing of a CH(3)NH(3)PbI(3)organometallic perovskite film on its electrical, photoelectrical, and optical properties is studied. It is shown that annealing at the temperatureT(a)> 140 degrees C results in the formation of a two-phase structure consisting of perovskite and lead iodide, whose relative content depends on the conditions of annealing, specifically, on the annealing temperature. The formation of PbI(2)in the perovskite structure yields a decrease in the conductivity and photoconductivity of the material. The studies suggest the possibility of the formation of planar structures composed of semiconductor materials with different band gaps, 1.6 eV (CH3NH3PbI3) and 2.4 eV (PbI2).

引用

页码：654 / 657

页数：4

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