Bright Exciton Fine-Structure in Two-Dimensional Lead Halide Perovskites

被引：75

作者：

Do, T. Thu Ha ^{[1
]}

del Aguila, Andres Granados ^{[1
]}

Zhang, Dong ^{[4
,5
]}

Xing, Jun ^{[1
]}

Liu, Sheng ^{[1
]}

Prosnikov, M. A. ^{[6
]}

Gao, Weibo ^{[1
,2
]}

Chang, Kai ^{[4
,5
]}

Christianen, Peter C. M. ^{[6
]}

Xiong, Qihua ^{[1
,2
,3
]}

机构：

[1] Nanyang Technol Univ, Div Phys & Appl Phys, Sch Phys & Math Sci, Singapore 637371, Singapore

[2] Natl Univ Singapore, Nanyang Technol Univ, Int Joint Res Unit UMI 3654,CNRS, Univ Cote Azur,Sorbonne Univ,MajuLab, Singapore 637371, Singapore

[3] Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China

[4] Chinese Acad Sci, Inst Semicond, SKLSM, Beijing 100083, Peoples R China

[5] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China

[6] Radboud Univ Nijmegen, High Field Magnet Lab, HFML EMFL, NL-6525 ED Nijmegen, Netherlands

来源：

NANO LETTERS | 2020年 / 20卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

2D lead halide perovskites; exciton fine-structure; electron-hole exchange interaction; spin mixing; TRIPLET EXCITONS; BINDING-ENERGY; METHYLAMMONIUM;

D O I：

10.1021/acs.nanolett.0c01364

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The fast-growing field of atomically thin semiconductors urges a new understanding of two-dimensional excitons, which entirely determine their optical responses. Here, taking layered lead halide perovskites as an example of unconventional two-dimensional semiconductors, by means of versatile optical spectroscopy measurements, we resolve fine-structure splitting of bright excitons of up to similar to 2 meV, which is among the largest values in two-dimensional semiconducting systems. The large fine-structure splitting is attributed to the strong electron-hole exchange interaction in layered perovskites, which is proven by the optical emission in high magnetic fields of up to 30 T. Furthermore, we determine the g-factors for these bright excitons as similar to+1.8. Our findings suggest layered lead halide perovskites are an ideal platform for studying exciton spin-physics in atomically thin semiconductors that will pave the way toward exciton manipulation for novel device applications.

引用

页码：5141 / 5148

页数：8

共 46 条

[1] EXCHANGE INTERACTION AND POLARITON EFFECTS IN QUANTUM-WELL EXCITONS [J].

ANDREANI, LC ;

BASSANI, F .

PHYSICAL REVIEW B, 1990, 41 (11) :7536-7544

[2] Highly Anisotropic in-Plane Excitons in Atomically Thin and Bulklike 1T′-ReSe2 [J].

Arora, Ashish ;

Noky, Jonathan ;

Drueppel, Matthias ;

Jariwala, Bhakti ;

Deilmann, Thorsten ;

Schneider, Robert ;

Schmidt, Robert ;

Del Pozo-Zamudio, Osvaldo ;

Stiehm, Torsten ;

Bhattacharya, Arnab ;

Krueger, Peter ;

de Vasconcellos, Steffen Michaelis ;

Rohlfing, Michael ;

Bratschitsch, Rudolf .

NANO LETTERS, 2017, 17 (05) :3202-3207

[3] Giant Fine Structure Splitting of the Bright Exciton in a Bulk MAPbBr3 Single Crystal [J].

Baranowski, Michal ;

Galkowski, Krzysztof ;

Surrente, Alessandro ;

Urban, Joanna ;

Klopotowski, Lukasz ;

Mackowsk, Sebastian ;

Maude, Duncan Kennedy ;

Ben Aich, Rim ;

Boujdaria, Kais ;

Chamarro, Maria ;

Testelin, Christophe ;

Nayak, Pabitra K. ;

Dollmann, Markus ;

Snaith, Henry James ;

Nicholas, Robin John ;

Plochocka, Paulina .

NANO LETTERS, 2019, 19 (10) :7054-7061

[4] Bright triplet excitons in caesium lead halide perovskites [J].

Becker, Michael A. ;

Vaxenburg, Roman ;

Nedelcu, Georgian ;

Sercel, Peter C. ;

Shabaev, Andrew ;

Mehl, Michael J. ;

Michopoulos, John G. ;

Lambrakos, Samuel G. ;

Bernstein, Noam ;

Lyons, John L. ;

Stoferle, Thilo ;

Mahrt, Rainer F. ;

Kovalenko, Maksym V. ;

Norris, David J. ;

Raino, Gabriele ;

Efros, Alexander L. .

NATURE, 2018, 553 (7687) :189-+

[5] Scaling law for excitons in 2D perovskite quantum wells [J].

Blancon, J. -C. ;

Stier, A. V. ;

Tsai, H. ;

Nie, W. ;

Stoumpos, C. C. ;

Traore, B. ;

Pedesseau, L. ;

Kepenekian, M. ;

Katsutani, F. ;

Noe, G. T. ;

Kono, J. ;

Tretiak, S. ;

Crooker, S. A. ;

Katan, C. ;

Kanatzidis, M. G. ;

Crochet, J. J. ;

Even, J. ;

Mohite, A. D. .

NATURE COMMUNICATIONS, 2018, 9

[6]

Burstein E., 2012, CONFINED ELECT PHOTO, V340

[7] 2D Homologous Perovskites as Light-Absorbing Materials for Solar Cell Applications [J].

Cao, Duyen H. ;

Stoumpos, Constantinos C. ;

Farha, Omar K. ;

Hupp, Joseph T. ;

Kanatzidis, Mercouri G. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (24) :7843-7850

[8] Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer WS2 [J].

Chernikov, Alexey ;

Berkelbach, Timothy C. ;

Hill, Heather M. ;

Rigosi, Albert ;

Li, Yilei ;

Aslan, Ozgur Burak ;

Reichman, David R. ;

Hybertsen, Mark S. ;

Heinz, Tony F. .

PHYSICAL REVIEW LETTERS, 2014, 113 (07)

[9] Origin of unusual bandgap shift and dual emission in organic-inorganic lead halide perovskites [J].

Dar, M. Ibrahim ;

Jacopin, Gwenole ;

Meloni, Simone ;

Mattoni, Alessandro ;

Arora, Neha ;

Boziki, Ariadni ;

Zakeeruddin, Shaik Mohammed ;

Rothlisberger, Ursula ;

Gratzel, Michael .

SCIENCE ADVANCES, 2016, 2 (10)

[10] Linearly Polarized Luminescence of Atomically Thin MoS2 Semiconductor Nanocrystals [J].

del Aguila, Andres Granados ;

Liu, Sheng ;

Thu Ha Do, T. ;

Lai, Zhuangchai ;

Thu Ha Tran ;

Krupp, Sean Ryan ;

Gong, Zhi-Rui ;

Zhang, Hua ;

Yao, Wang ;

Xiong, Qihua .

ACS NANO, 2019, 13 (11) :13006-13014

← 1 2 3 4 5 →