Optical orientation and alignment of excitons in ensembles of inorganic perovskite nanocrystals

被引：58

作者：

Nestoklon, M. O. ^{[1
]}

Goupalov, S. V. ^{[1
,2
]}

Dzhioev, R. I. ^{[1
]}

Ken, O. S. ^{[1
]}

Korenev, V. L. ^{[1
]}

Kusrayev, Yu. G. ^{[1
]}

Sapega, V. F. ^{[1
]}

de Weerd, C. ^{[3
]}

Gomez, L. ^{[3
]}

Gregorkiewicz, T. ^{[3
]}

Lin, Junhao ^{[4
,5
]}

Suenaga, Kazutomo ^{[4
]}

Fujiwara, Yasufumi ^{[6
]}

Matyushkin, L. B. ^{[7
]}

Yassievich, I. N. ^{[1
]}

机构：

[1] Ioffe Inst, St Petersburg 194021, Russia

[2] Jackson State Univ, Dept Phys, Jackson, MS 39217 USA

[3] Univ Amsterdam, Van der Waals Zeeman Inst, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands

[4] Natl Inst Adv Ind Sci & Technol, AIST Cent 5, Tsukuba, Ibaraki 3058565, Japan

[5] Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

[6] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

[7] St Petersburg Electrotech Univ LETI, St Petersburg 197376, Russia

来源：

PHYSICAL REVIEW B | 2018年 / 97卷 / 23期

基金：

美国国家科学基金会; 奥地利科学基金会;

关键词：

RANGE EXCHANGE INTERACTION; CRYSTAL-STRUCTURE; MAGNETIC-FIELD; FINE-STRUCTURE; QUANTUM; PHASE;

D O I：

10.1103/PhysRevB.97.235304

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate the optical orientation and alignment of excitons in a two-dimensional layer of CsPbI3 perovskite nanocrystals prepared by colloidal synthesis and measure the anisotropic exchange splitting of exciton levels in the nanocrystals. From the experimental data at low temperature (2 K), we obtain the average value of anisotropic splitting of bright exciton states of the order of 120 mu eV. Our calculations demonstrate that there is a significant contribution to the splitting due to the nanocrystal shape anisotropy for all inorganic perovskite nanocrystrals.

引用

页数：10

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