Terahertz Vibrational Modes in CH3NH3PbI3 and CsPbI3 Perovskite Films

被引：14

作者：

Andrianov, A., V ^{[1
]}

Aleshin, A. N. ^{[1
]}

Matyushkin, L. B. ^{[2
]}

机构：

[1] Russian Acad Sci, Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[2] St Petersburg State Electrotech Univ LETI, St Petersburg 197376, Russia

来源：

JETP LETTERS | 2019年 / 109卷 / 01期

关键词：

FIELD-EFFECT TRANSISTORS; SMALL HYSTERESIS; CH(3)NH(3)PBL(3); MOBILITIES; DISORDER;

D O I：

10.1134/S0021364019010053

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Films of CH3NH3PbI3 organometallic perovskite, which is currently considered as a promising basic material for new-generation solar cells, as well as films containing CsPbI3 inorganic lead-halid perovskite nanocrystals, have been studied in the spectral range of 0.2-2.9 THz at room temperature by terahertz time-domain spectroscopy. Several low-frequency vibrational modes previously attributed exclusively to vibrations of Pb-I bonds have been observed in the perovskite films under investigation in this spectral range. The comparison of terahertz characteristics of perovskites under study has shown that vibrations associated with a cation (CH3 NH3+, Cs+) make a significant contribution to the formation of the observed low-frequency vibrational modes in perovskites under consideration.

引用

页码：28 / 32

页数：5

共 21 条

[1] Field-effect transistors with high mobility and small hysteresis of transfer characteristics based on CH3NH3PbBr3 films [J].

Aleshin, A. N. ;

Shcherbakov, I. P. ;

Trapeznikova, I. N. ;

Petrov, V. N. .

PHYSICS OF THE SOLID STATE, 2017, 59 (12) :2486-2490

[2] Solution-processed field-effect transistors based on polyfluorene ecesium lead halide nanocrystals composite films with small hysteresis of output and transfer characteristics [J].

Aleshin, Andrey N. ;

Shcherbakov, Igor P. ;

Gushchina, Ekaterina V. ;

Matyushkin, Leo B. ;

Moshnikov, Vyacheslav A. .

ORGANIC ELECTRONICS, 2017, 50 :213-219

[3] Electrical and optical properties of polyfluorene thin films studied by THz time-domain spectroscopy [J].

Andrianov, Alexander V. ;

Aleshin, Andrey N. ;

Truchin, Valeri N. ;

Bobylev, Alexander V. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2011, 44 (26)

[4]

[Anonymous], 1964, PRINCIPLES OPTICS

[5]

[Anonymous], Best Research Cell Efficiencies

[6] Synthesis and crystal chemistry of the hybrid perovskite (CH3NH3) PbI3 for solid-state sensitised solar cell applications [J].

Baikie, Tom ;

Fang, Yanan ;

Kadro, Jeannette M. ;

Schreyer, Martin ;

Wei, Fengxia ;

Mhaisalkar, Subodh G. ;

Graetzel, Michael ;

White, Tim J. .

JOURNAL OF MATERIALS CHEMISTRY A, 2013, 1 (18) :5628-5641

[7] Lattice dynamics and vibrational spectra of the orthorhombic, tetragonal, and cubic phases of methylammonium lead iodide [J].

Brivio, Federico ;

Frost, Jarvist M. ;

Skelton, Jonathan M. ;

Jackson, Adam J. ;

Weber, Oliver J. ;

Weller, Mark T. ;

Goni, Alejandro R. ;

Leguy, Aurelien M. A. ;

Barnes, Piers R. F. ;

Walsh, Aron .

PHYSICAL REVIEW B, 2015, 92 (14)

[8] Excitons versus free charges in organo-lead tri-halide perovskites [J].

D'Innocenzo, Valerio ;

Grancini, Giulia ;

Alcocer, Marcelo J. P. ;

Kandada, Ajay Ram Srimath ;

Stranks, Samuel D. ;

Lee, Michael M. ;

Lanzani, Guglielmo ;

Snaith, Henry J. ;

Petrozza, Annamaria .

NATURE COMMUNICATIONS, 2014, 5

[9] Perovskite Solar Cells: From Materials to Devices [J].

Jung, Hyun Suk ;

Park, Nam-Gyu .

SMALL, 2015, 11 (01) :10-25

[10] Phonon Mode Transformation Across the Orthohombic-Tetragonal Phase Transition in a Lead Iodide Perovskite CH3NH3Pbl3: A Terahertz Time-Domain Spectroscopy Approach [J].

La-o-vorakiat, Chan ;

Xia, Huanxin ;

Kadro, Jeannette ;

Salim, Teddy ;

Zhao, Daming ;

Ahmed, Towfiq ;

Lam, Yeng Ming ;

Zhu, Jian-Xin ;

Marcus, Rudolph A. ;

Michel-Beyerle, Maria-Elisabeth ;

Chia, Elbert E. M. .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2016, 7 (01) :1-6

← 1 2 3 →